http://www.davidsmiller.com/aviation daily 0.75 2016-05-12 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383104069881-WCNUNTJZS9OJ559EUYXH/bh_maine_1.jpg Aviation - Bar Harbor, ME https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383104069881-WCNUNTJZS9OJ559EUYXH/bh_maine_1.jpg Aviation - Bar Harbor, ME https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383104083609-X9F3FQ8UUQGP4ZGPV5GP/bh_maine_2.jpg Aviation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383104087838-G0HSA4V3USLY8OLV0JQS/bh_maine_3.jpg Aviation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429026749874-AG0WKQ4LTURGMY1NLOP2/IMG_0117.JPG Aviation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429026746211-QHZVSFLHFEY17OOBZ1KW/IMG_0120.JPG Aviation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429026764378-66UNI8HWN7XNHOLHAK5D/IMG_0121.JPG Aviation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429026762134-P4H8QLE5Z389QYU4Z5P7/IMG_0125.JPG Aviation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429026664876-9P4BRKNYZC0PV5D07CTL/image-asset.jpeg Aviation - 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Fast Steering Mirror Design Exercise - Make it stand out Whatever it is, the way you tell your story online can make all the difference. http://www.davidsmiller.com/blog/statistical-analysis-of-gonogo-gages-2019/12/5 monthly 0.5 2019-12-07 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1575609472738-3BQYFKDAW55KI8EP61HV/integralbounds_go_internal.png Blog - Statistical Analysis of Go/NoGo Gages Figure 1 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1575610271945-K4OIQL1VSJJ9XMQ2URH7/Go_Gage_jointPDF.png Blog - Statistical Analysis of Go/NoGo Gages https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1575610272462-D80K4GS90VMEEQEO0LY6/NoGo_Gage_jointPDF.png Blog - Statistical Analysis of Go/NoGo Gages https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1575610271860-C3Q2LTBRVDL8BY6PLPNG/allPDFs_2.png Blog - Statistical Analysis of Go/NoGo Gages http://www.davidsmiller.com/blog/suspending-pictures-with-catenarys-catenaries-2019/11/1 monthly 0.5 2019-11-01 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1572588150396-AON1R699HIZBXSBI79HN/catenary1.png Blog - Suspending Pictures with Catenarys (Catenaries?) https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1572588150400-QWRDTYJQI46N4V6A5PD1/catenary2.png Blog - Suspending Pictures with Catenarys (Catenaries?) https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1573440551277-IZRJP1VXLP6XGO20JURQ/image0.jpeg Blog - Suspending Pictures with Catenarys (Catenaries?) http://www.davidsmiller.com/blog/how-to-weigh-your-head-pt-2-2019/11/1 monthly 0.5 2019-11-01 http://www.davidsmiller.com/blog/how-to-weigh-your-head-pt-1-2019/9/28 monthly 0.5 2019-09-30 http://www.davidsmiller.com/blog/el-potrero-chico-2017/4/3 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271961943-S2O01DK2Y5PPOI2C4A0Z/30178576_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271972731-34KW7CSPO56F2WLRDMSL/30177760_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271982647-4PP895L8N116XK9W01SV/30177008_Unknown.jpg Blog - 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El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271975077-ETOQPDW300TS39FMDHH6/30177680_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271978097-J2K4KYNS488UPXLL8U4M/30177456_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271980397-93S1MZ2VI7RUXC52VLSA/30177392_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491272007232-0HYWHY27J716R6BYISE0/30174928_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491272004625-GRXKLOFQHZ9AFQCE1SU2/30175088_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491272000389-BUTAWDCJX5WYQE64IWDN/30175328_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271981933-TB7RZDAPFOZWU8O9BD5Y/30177072_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271985921-7HO2OGQZZADUTPZHLP79/30176032_Unknown.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271997998-8J4RFHO7PYBAU51HIN6I/IMG_8581.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491271988517-JT6DLUZ651KWIK4K40CN/IMG_8620.jpg Blog - El Potrero Chico https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1491273812055-Q0VRSX0L3VH6LY4NC2U5/image-asset.jpeg Blog - El Potrero Chico http://www.davidsmiller.com/blog/flight-to-bar-harbor-and-nyd-dawn-hike-on-mount-cadillac-2017/1/1 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307440183-LEYHV1XUFGHGOAUO4N22/thumb_IMG_1516_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain The Maine coast is dotted with islands. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307440032-Q36LCCHJKUK2F5ENGNTM/thumb_IMG_1548_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain Approaching KBHB Rwy 22. I later realized why one of the fixes is named 'CADLC'... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307441686-CM1RRQHOT5SAPB2FW8EZ/thumb_IMG_1564_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain A C172 Classic on floats being repaired/restored at KBHB https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307440743-F00BYENMI9FAK9A31GLM/thumb_IMG_1550_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307441000-25D5GZLX8DMANS748ES2/thumb_IMG_1563_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain Putting the plane in the hangar (NOT a hanger) overnight. I like the lighting in this shot https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307441750-PUESE5F8XNLCZ8W9CLKQ/thumb_IMG_1566_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain At the summit of Cadillac Mountain. There was not much to see due to the front passing through at the time. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307442279-N2742KNOQZS56AKD5PLC/thumb_IMG_1573_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain This was the view from the summit. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307442626-1KWRMTMNWFF9OIYMIIMD/thumb_IMG_1575_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain As we descended down the road, the clouds began to lift. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307443100-HPVV6LSH0UOIBTIEKGLW/thumb_IMG_1589_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain The bases were steadily rising. The summit, however, was still socked in at this point. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1483307443424-UOZLV86E3W99B2SRGGU1/thumb_IMG_1603_1024.jpg Blog - Flight to Bar Harbor and NYD Dawn Hike on Cadillac Mountain By the time I departed, the front had completely passed through and the summit was completely visible. The remaining high pressure left great visibility but plenty of turbulence! It made for an interesting landing back home. http://www.davidsmiller.com/blog/flying-in-the-florida-keys-2016/8/31 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695381814-1B0JJPF202N0I3Z7W344/IMG_1430.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695405954-WR7L6NJJ3TLSGQ2VPI8Q/IMG_1417.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695480675-OREJIYICHVF96XRYJLQV/IMG_1423.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695523391-QNJFPD5BAP4AZPIBGOSK/IMG_1412.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695586697-3SEK7QC02H972QJLYSRT/IMG_1414.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695617621-ZSL9RNY3H2V1YY2BKHOO/IMG_1410.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695687981-Y1BMJ49OAUJF1CIQKCZM/IMG_1389.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695732454-MLF9ZKNHQI745WFVCEQ0/IMG_1408.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695786343-MHVE1LGEY5JDO6Z6NSU5/IMG_1409.jpg Blog - Flying in the Florida Keys https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1472695806773-68X1NSRDYXJKCM1KXOHQ/IMG_1326.jpg Blog - Flying in the Florida Keys http://www.davidsmiller.com/blog/breakerbot-moves-to-conedison-2016/5/22 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463967037115-GDZ5PFV6VHDR9O0GK48V/IMG_7752.JPG Blog - BreakerBot Moves to ConEdison The ConEd building is a historical landmark so the exterior masonry, etc. cannot be modified. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463967042986-RIDREGEBXXCIGOTDN372/IMG_7747.JPG Blog - BreakerBot Moves to ConEdison The interior is very modern, however. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463967043818-F4OC5F5JYW8KZYWTBWE2/IMG_7749.JPG Blog - BreakerBot Moves to ConEdison BreakerBot sits on a sofa in the lobby. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463967036003-QJ8YRKV0WZNI08CMHLGR/IMG_7750.JPG Blog - BreakerBot Moves to ConEdison Setting up in the conference room https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463967058551-NJ64F3L16JQVZ6DVNHTH/bb_team_coned.jpg Blog - BreakerBot Moves to ConEdison Group photo after the presentation. http://www.davidsmiller.com/blog/illusionists-heart-locket-pt-7-2016/5/18 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966229913-A821DHF9XS1NHVPZL2MU/IMG_7530.JPG Blog - Illusionist's Heart Locket Pt. 7 The barrel superglued into the groove https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966224949-M1L7GS9BBBEUTSPV9OXN/IMG_7531.JPG Blog - Illusionist's Heart Locket Pt. 7 Sonia holding her handiwork. I walked her through everything, but she manipulated all the handles and levers herself! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966227100-D07TAJV46QVANDIN22JC/IMG_7532.JPG Blog - Illusionist's Heart Locket Pt. 7 For safety's sake I used the torch to release the superglue bond https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966220003-AAHSO1FPFNU4C6F6UFRQ/IMG_7533.JPG Blog - Illusionist's Heart Locket Pt. 7 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966217344-IO4NXKU0BJCIG2Y9BP0V/IMG_7534.JPG Blog - Illusionist's Heart Locket Pt. 7 Comparing the size of the punch to the size of the hole where the photo will go. It's quite a snug fit. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966212720-FE00E34CYJA5E34OR451/IMG_7535.JPG Blog - Illusionist's Heart Locket Pt. 7 We lasercut another couple of hooks for the robot as that is the part that is most likely to break during transport. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463966215542-0UFUBXOIVIL62CJKX300/IMG_7536.JPG Blog - Illusionist's Heart Locket Pt. 7 Sonia holding the BreakerBot! http://www.davidsmiller.com/blog/breakerbot-gets-a-new-look-2016/5/11 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463021647249-LHZ8479TM5EBDRSUHNK4/IMG_7516.jpg Blog - BreakerBot Gets a New Look Always use vector image formats (PNG, TIF, etc.) to ensure crisp resolution at any scale. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463021647161-MQ8E40S9OTXHVYD9O4SB/IMG_7517.jpg Blog - BreakerBot Gets a New Look Aluminum standoff spacers https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463021654877-C6369QJKEFIBWNKO6FKJ/IMG_7518.jpg Blog - BreakerBot Gets a New Look They have an additional function to prevent the swerve modules from crashing into the plaque when the robot steers... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1463021653444-17KMMAYVAO909Y2XDWPY/IMG_7519.JPG Blog - BreakerBot Gets a New Look BreakerBot looking good! We have to do something about its hair though http://www.davidsmiller.com/blog/illusionists-heart-locket-pt-7-2016/5/10 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914337928-TSBF5F9N89KFCCW6VO7J/IMG_7504.jpg Blog - Illusionist's Heart Locket Pt. 6 Spot drilling the hole https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914338276-ZPA4KIP68VOWHM5QTWNL/IMG_7505.jpg Blog - Illusionist's Heart Locket Pt. 6 Setting the 15 deg angle https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914340758-NTPDMXHUC37AQ9PKP5JT/IMG_7506.jpg Blog - Illusionist's Heart Locket Pt. 6 Setting the height of the cut https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914341566-LV9NRF9UZ6LXKOGEJ009/IMG_7507.jpg Blog - Illusionist's Heart Locket Pt. 6 I dimensioned the part based on how it would be fixed to make setting the height and depth easier https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914345092-HRLYGF7V9GM1CFKKVZHL/IMG_7508.jpg Blog - Illusionist's Heart Locket Pt. 6 Making sure the fixture for the milling cutter wont crash into the work https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914346010-BO9PNCZ07742OATRWBZR/IMG_7509.jpg Blog - Illusionist's Heart Locket Pt. 6 Punching through some card stock https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914353014-F5V40Q2Z4LSTL6MBTMJE/IMG_7511.jpg Blog - Illusionist's Heart Locket Pt. 6 I should have made the punch longer as the circle gets stuck in the die https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914350386-BTPPOWTKPWY5LEREDXX3/IMG_7510.jpg Blog - Illusionist's Heart Locket Pt. 6 It's a clean cut at least. I used a pencil to get it out https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462914354613-QU2NJTTNNCISFWUDUMNU/IMG_7512.jpg Blog - Illusionist's Heart Locket Pt. 6 The finished piece with the drawing http://www.davidsmiller.com/blog/senior-design-presentation-2016/5/3 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462397332264-6VLG36CCM0VBDDP56V2J/IMG_7481_2.JPG Blog - BreakerBot Wins an Award https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1462397333398-BJX38B5HAILA7W2BH6WL/IMG_7483.jpg Blog - BreakerBot Wins an Award http://www.davidsmiller.com/blog/matlab-project-membrane-vibration-2016/4/29 monthly 0.5 2019-09-30 http://www.davidsmiller.com/blog/quantum-dot-lite-brite-pt3-2016/4/22 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461354675315-HD97HOVOV0YIBPXQL5TT/IMG_7448.jpg Blog - Quantum Dot Lite Brite Pt.3 The finished mold https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461354671526-ZRUKBX8V5QNG9CL4SLOT/IMG_7404.jpg Blog - Quantum Dot Lite Brite Pt.3 Materials https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461354671385-ZABH8JFYQFO1JV1RYH60/IMG_7406.jpg Blog - Quantum Dot Lite Brite Pt.3 I used hot glue to seal the mold cavity https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461354673390-2HSB77T58BM7YRW884FC/IMG_7430.jpg Blog - Quantum Dot Lite Brite Pt.3 Mixing the media https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461354673382-A3R4XPKQ5RBS57J2EWQ6/IMG_7444.JPG Blog - Quantum Dot Lite Brite Pt.3 Pouring into the cavity https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461354675440-TN95NTZHA0JRLQJJY3YR/IMG_7443.jpg Blog - Quantum Dot Lite Brite Pt.3 Now we wait... http://www.davidsmiller.com/blog/quantum-dot-lite-brite-pt-2-2016/4/15 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460754422756-RTUSNNI0WB08BRQAQJ3X/final_qd.JPG Blog - Quantum Dot Lite Brite Pt. 2 Ready to cast the mold media. Just need some mold release. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460754423957-1PXQ9VZJG3RGS9AZFIQ2/milling_qd.JPG Blog - Quantum Dot Lite Brite Pt. 2 Gluing the box that will become the mold cavity. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460754422820-1YU0DOREVEEMIXO3PQ1I/gluing_qd.JPG Blog - Quantum Dot Lite Brite Pt. 2 Milling the positive from aluminum. http://www.davidsmiller.com/blog/breakerbot-kinematics-verification-2016/4/14 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607021458-RCJDYH4V3I9MRYOZ50EC/failure1.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 +Y translation + CW rotation. Notice the skidding. If the X vel. were +, the motion would be correct. I hadn't fixed the wheel angles at this point though; those are still wrong. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607021402-D3VJURLRUPR6MORU4BNK/failure2.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 Pure translation in Q1. Notice the X velocity still seems to have the wrong sign. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607021109-97EGZBCITBD49ALJKZQI/partial_success2.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 I don't remember what this is. I don't think it worked... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607021122-V30V3PEDVNF7307UQG59/partial_success1.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 This looks correct, but it's not. If you try gradually reducing the rotation and keeping the translation the same, you'll notice something wrong. It's helpful to test limiting cases like this, by introducing things very slowly. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607019505-BH2HSGGXD2ERQ6NWMQNM/partial_success4.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 I stopped doing the motion plots and just did a single snapshot with velocity vectors. You have to adjust the sign of the wheel velocity to get the vector pointing in the right direction. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607019566-W83F44VIT910QGTRMJQY/partial__success3.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 Here you can see all the wheels have the same velocity [vector] as each other, and as the body of the robot. Bingo. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607019855-2OZQYQY05970V8FQMOUY/success_1.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 Here's where I started trying to combine translation inputs and rotation inputs. Here the robot has a Y+ translation and a CCW rotation. The net result is a pure rotation about some point on the X axis. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607019965-WHZ03KWT2KXP6PMU58MA/success_9.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 Now I'm combining X and Y translation with rotations. I repeated this for different quadrants (translation) and different rotation directions (CW,CCW). https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020054-AVDO91P186EA1Q0SHYIY/success_8.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 You can see that the lower left wheel is on the largest radius of the orbit, and it has the highest speed. Good sign. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020209-EGKBC3OCJ7PQDVPNOY0Y/success_7.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 I went through each translational quadrant twice, one for each rotation direction (CW,CCW). https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020317-9BTEDIL63Y4L6DXFGJ2V/success_6.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 One other verification I could do is making sure the normal lines from each wheel intersect at the same point. This is the orbital point I mentioned in the text below. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020472-R3HUJP2M8CGI0TGHNDP6/success_5.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020570-C3PT9YK92W9MHXPFX9GY/success_4.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020724-4JZOXU0DP0JL1DC23TS9/success_3.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460607020803-HCQOLH3O5FFIC2J43O4Q/success_2.png Blog - Kinematics of Wheeled Mobile Robots Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460609782083-BO7EQLMDZU0KDP7DRZQR/image-asset.jpeg Blog - Kinematics of Wheeled Mobile Robots Pt. 3 http://www.davidsmiller.com/blog/matlab-project-string-vibration-2016/4/11 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460415688019-WA0EFVREFLBOA2XT4E98/Screen+Shot+2016-04-11+at+7.03.06+PM.png Blog - MATLAB Project: String Vibration Fundamental mode of vibration of a string. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460425444588-OQUXRPAKF75MEIOUVEJB/Screen+Shot+2016-04-11+at+9.45.31+PM.png Blog - MATLAB Project: String Vibration Adding odd harmonic in decreasing amplitude to approximate a square wave https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460425444603-RJJYN5PZR7497PGO6953/Screen+Shot+2016-04-11+at+9.43.12+PM.png Blog - MATLAB Project: String Vibration Plucking a string http://www.davidsmiller.com/blog/matlab-four-bar-linkage-design-2016/3/24 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794073939-X72O1H5X6QCFW0642218/4bar_5.png Blog - MATLAB Four-Bar Linkage Design It appears that this mechanism is valid... But how can I be sure? https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794074180-E9P6NRZ0F8UDVZC32S01/4bar_7.png Blog - MATLAB Four-Bar Linkage Design By plotting arcs around the links I ensure they stay the same size throughout. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794074298-N5ZKBGEKHO78HCTGD6SH/4bar_8.png Blog - MATLAB Four-Bar Linkage Design Here are some varying geometries that achieve the same goal. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794073393-WRAFH802AOV26VQDQHKG/4bar_1.png Blog - MATLAB Four-Bar Linkage Design This is when I was still debugging my code. You can clearly see each member changes length as it rotates, which cannot occur. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794074439-TZYBQ36F3H1NVDY2Q7K2/4bar_9.png Blog - MATLAB Four-Bar Linkage Design This geometry resulted in a bearing that was placed off the surface of the shipping container. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794074607-ECLUYVJH7VS3BSK0VDOJ/4bar_10.png Blog - MATLAB Four-Bar Linkage Design One more geometry. The next question is, how can you optimize the linkage?? https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458794074073-JXUWCM0ADHL1B46GSOVK/4bar_6.png Blog - MATLAB Four-Bar Linkage Design I tried plotting snapshots of the linkage but it didn't work so well. This is wrong because the magenta snapshots do not align with the red position. http://www.davidsmiller.com/blog/h6j6f588a1mo5qbfwriuf2aqws9qbl-2016/3/19 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458768009130-70QUWTPCFG3F1DWKUM21/Screen+Shot+2016-03-20+at+12.19.56+AM.png Blog - Learning to Use Simulink Kinematics model verification https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458768004347-F4D2AURX2DQ8T5QHGZO9/Screen+Shot+2016-03-19+at+5.07.30+PM.png Blog - Learning to Use Simulink Overall control model https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458768399499-YGJUMTCHSEIR9BITOUHJ/Screen+Shot+2016-03-23+at+5.26.22+PM.png Blog - Learning to Use Simulink This is the error I get when I try to run the simulation. http://www.davidsmiller.com/blog/3lh5sp06rr6dy6jx293kfoymflzqkb-2016/3/19 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412114787-B40UJH11XDM0G7ZIMHAH/IMG_7232.jpg Blog - Illusionist's Locket Pt. 5 Checking the dimension of the pin head. Right on the money. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412114831-65MWA7O8LR2Y7SH5EZXR/IMG_7233.jpg Blog - Illusionist's Locket Pt. 5 The completed pin. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412117166-FL5CYSCX4DFAUGQHD44V/IMG_7234.jpg Blog - Illusionist's Locket Pt. 5 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412115549-ASFLP7J8APEGEYGDFFI1/IMG_7235.jpg Blog - Illusionist's Locket Pt. 5 Measurements of the corner rounding tool for GibbsCAM. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412117346-9ULKBPOL40CTMYAI50VJ/IMG_7242.jpg Blog - Illusionist's Locket Pt. 5 Testing the corner rounding operation on aluminum. It came out pretty well! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412118717-YZXYCZ1LTWOSFBSREZKE/IMG_7243.jpg Blog - Illusionist's Locket Pt. 5 Testing the barrel hole drilling operation. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412121776-OE8KYIVBHVNYQ5A92MIW/IMG_7245.jpg Blog - Illusionist's Locket Pt. 5 Reaming the hole. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412122254-H3WV1IOFX2THM5M4L34M/IMG_7246.jpg Blog - Illusionist's Locket Pt. 5 Chamfering the hole. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412123438-T9DVXJ73L5E35WIGJPZZ/IMG_7247.jpg Blog - Illusionist's Locket Pt. 5 The barrel hole, complete. Much better finish than with the ball mill. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412125325-Y7UXVRXPO3YN1KS1LIP1/IMG_7248.jpg Blog - Illusionist's Locket Pt. 5 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412129206-BTM1WKI79WNRDBIJNBST/IMG_7252.jpg Blog - Illusionist's Locket Pt. 5 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412129345-YW58ECD1A5LMEEDWVBKR/IMG_7250.jpg Blog - Illusionist's Locket Pt. 5 Counterbored hole for the head of the pin. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412127473-VSRXNNZBJGD08APB35GY/IMG_7251.jpg Blog - Illusionist's Locket Pt. 5 You can see a slight step from the corner rounding tool. I kind of like the way it looks though. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412131345-78KQB06YBRTP5HLP6VO7/IMG_7263.jpg Blog - Illusionist's Locket Pt. 5 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412131517-VT6IYJNOPGTN0P6Q4TTG/IMG_7262.jpg Blog - Illusionist's Locket Pt. 5 Turning the tapered barrel to match the twist drill angle. But I got the angle wrong... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412132603-BN1L3SDXPSOBCUR453JS/IMG_7264.jpg Blog - Illusionist's Locket Pt. 5 Ready to machine the final product with copper. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412134599-0E0ZQAO2NI6LN4V4M4FS/IMG_7266.jpg Blog - Illusionist's Locket Pt. 5 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1458412134289-CA1NTPWS6TU12OPHBBIY/IMG_7265.jpg Blog - Illusionist's Locket Pt. 5 The results! Along with all the other various prototypes I made. http://www.davidsmiller.com/blog/hardening-of-2016/3/14 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1457991376052-AJRANKTN480F2AR3OC5D/image7.jpeg Blog - Illusionist's Locket Pt. 4 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1457991376669-1J0MQNSTMNIHWV9HXOP6/image6.jpeg Blog - Illusionist's Locket Pt. 4 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1457991373447-Y9DP3FT1FB4JDRNDNZJB/image5.jpeg Blog - Illusionist's Locket Pt. 4 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1457991373396-RTIRBOF9BK3XIJD5RQ5W/image3.jpeg Blog - Illusionist's Locket Pt. 4 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1457991370398-U573W6RS016H5QGVG7ML/image2.jpeg Blog - Illusionist's Locket Pt. 4 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1457991370421-NJRZP4A7ZIFM0ZSCZKLJ/image1.jpeg Blog - Illusionist's Locket Pt. 4 http://www.davidsmiller.com/blog/experimenting-with-copper-patinas-2016/3/3 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987485894-QHHMHP4BIWI9GO3YIMJZ/IMG_7110_2.jpg Blog - Experimenting With Copper Patinas Original buffed copper for comparison. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987470235-6GNCAXC2UEC67V1YL7AS/IMG_7117.jpg Blog - Experimenting With Copper Patinas First round of tests. No real success... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987476854-HCEY1CPVFCURDB7O79VH/IMG_7121.jpg Blog - Experimenting With Copper Patinas Got some vibrant red on the edges, but the center is all firescale. No flux on this one. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987473403-XTATAV5CYDQ68DTLG07A/IMG_7118_2.jpg Blog - Experimenting With Copper Patinas https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987480817-0XJ4I6D8T6BEEXQSG4WV/IMG_7123_2.jpg Blog - Experimenting With Copper Patinas Here you can se the alcohol burning off. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987484221-IPASJXJGEU2B9QOL878K/IMG_7125_2.jpg Blog - Experimenting With Copper Patinas Blotchy red pattern. Not great, but it's an improvement. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987488597-BWU7AIZR1Q9TTH9M4QIS/IMG_7129_2.jpg Blog - Experimenting With Copper Patinas Seems like heating it to the point when the surface turns dark-grey/black is what gives the most consistent red color. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987495874-Z9SQYU7LCRM6N34LUCOO/IMG_7131_2.jpg Blog - Experimenting With Copper Patinas Looking better... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987491536-FK8KL21BVSR4RVZSSINP/IMG_7133_2.jpg Blog - Experimenting With Copper Patinas Tried coating one half in flux to see effect. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987494842-ASRSEQD5PYS4PYI0SN7Q/IMG_7135_2.jpg Blog - Experimenting With Copper Patinas Nothing really noticeable... Maybe because my flux isn't really flux. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987499019-FDGID84SQYDSXJISXHRY/IMG_7138_2.jpg Blog - Experimenting With Copper Patinas Heating the copper until it's red hot. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987503003-JNCFNLX2NKPAKL4KTBVN/IMG_7139_2.jpg Blog - Experimenting With Copper Patinas This ruins the red color. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456987503742-71TJHPN9XLRIYE680BMZ/IMG_7146.JPG Blog - Experimenting With Copper Patinas Step-by step of entire process! http://www.davidsmiller.com/blog/kinematics-of-wheeled-mobile-robots-pt-2-2016/2/29 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456798792440-IPIM3IPBA7S8WT3SPDAE/rstick_x-right_lstick_k-right_position-trace.png Blog - Kinematics of Wheeled Mobile Robots Pt. 2 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456798792483-ZIDQAAFSTLOS3BN0VEWW/lstick_y-up_lstick_k-right_position-trace.png Blog - Kinematics of Wheeled Mobile Robots Pt. 2 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456798792720-4F12TJRCO7RKTWXMLW80/lstick_y-up_rstick_x-right_position-trace.png Blog - Kinematics of Wheeled Mobile Robots Pt. 2 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456798792755-AIHQG31EKKWHK1JUB54J/lstick_y-up_position-trace.png Blog - Kinematics of Wheeled Mobile Robots Pt. 2 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456798792898-6QGG5FENPO1TL7PR5Q0W/lstick_y-up_rstick_x-right_lstick_k-right_position-trace.png Blog - Kinematics of Wheeled Mobile Robots Pt. 2 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456798792928-69QY2FPTDRNB2QHKHZWJ/pure_rotation.png Blog - Kinematics of Wheeled Mobile Robots Pt. 2 http://www.davidsmiller.com/blog/a-hard-days-work-2016/2/22 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456179771879-HS2PV9CDVDOKR1JK3RYZ/IMG_7091.jpg Blog - A Hard Day's Work https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456179812015-LB33CX580O4C6JR5YAFL/IMG_7089.jpg Blog - A Hard Day's Work https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456179812035-DLWSAYKSFQUZM6GYYAM8/IMG_7090.jpg Blog - A Hard Day's Work https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456179808600-DB2FTP2AR124841626GR/IMG_7086.jpg Blog - A Hard Day's Work https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456179807897-NKVM8ZEQFTWWJVS7VUL3/IMG_7087.jpg Blog - A Hard Day's Work https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456179808673-VIBP1IYG1O5263EHVRS5/IMG_7088.jpg Blog - A Hard Day's Work http://www.davidsmiller.com/blog/isolating-pure-bending-in-optical-fibers-2016/2/20 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456020488851-HLOOT9U14M6XMGJCID46/iso_perpective_render.JPG Blog - Isolating Pure Bending in Optical Fibers https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456020488855-8A1VQIRL9VI5D0S3IMDA/iso_exp_perpective_render.JPG Blog - Isolating Pure Bending in Optical Fibers https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456019752691-MJPYPDTUF9AKEQVK4MDT/Fiber_Winder_Assy.gif Blog - Isolating Pure Bending in Optical Fibers Opening https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1456019752732-ED3YDKKOK3YG35214CV4/Fiber_Winder_Assy_2.gif Blog - Isolating Pure Bending in Optical Fibers Exposed Control Rods http://www.davidsmiller.com/blog/illusionists-locket-pt-3-2016/2/16 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455666749609-5ITG1P2CMQG3U9YNZ1EF/IMG_7073.jpg Blog - Illusionist's Locket Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455666749576-2W0G6FU5QQFAY6HURYB1/IMG_7074.jpg Blog - Illusionist's Locket Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455666751280-QI9JSOY3U94UPXPP4S2M/IMG_7075.jpg Blog - Illusionist's Locket Pt. 3 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455666751426-TCWGZYTUCCPWBOWJLFI8/IMG_7076.jpg Blog - Illusionist's Locket Pt. 3 http://www.davidsmiller.com/blog/illusionists-locket-pt-2-2016/2/11 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455220319438-7APEBIWWRFPQ2VYS5X8E/image2.png Blog - Illusionist's Locket Pt. 2 Oval configuration: red barrel visible. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455220319732-TOWTKTZAMVEF2NHMBME7/img1.png Blog - Illusionist's Locket Pt. 2 Heart configuration: green barrel visible. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455220319482-DSL40J5SKQDNE9X1O87B/image3.png Blog - Illusionist's Locket Pt. 2 Here you can see how the barrels move when you rotate the mechanism from the oval to the heart or vice versa. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455220319639-VV3U8TQUKEHNTHKA49X6/image4.png Blog - Illusionist's Locket Pt. 2 Mystery solved! There's no magic here. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455220319667-FX0OQ65PJWWNE7YKSUOR/image5.png Blog - Illusionist's Locket Pt. 2 http://www.davidsmiller.com/blog/new-project-quantum-dot-lite-brite-2016/2/10 monthly 0.5 2019-09-30 http://www.davidsmiller.com/blog/valentines-day-present-2016/2/9 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455050569265-F0XA43GZ2I6Z0Y87LXEL/heart.JPG Blog - Illusionist's Locket Heart configuration. Magnets are attracted to each other, so the configuration is stable. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455050569462-SUA003HJAP7LMSAIDM4I/opening.JPG Blog - Illusionist's Locket Rotating the two halves https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455050569471-C3DOJEX4ZE8CQEKE0PXM/oval.JPG Blog - Illusionist's Locket Oval configuration. Magnets now repel each other, so the two halves can easily be pulled apart, https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455050569257-B27ZCFPWJUSBS1JQVIIT/exploded.JPG Blog - Illusionist's Locket Disassembly of the two halves reveals hidden pocket for a ring, note, etc. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455064670695-Z01S6HHZKJ2QIYUL1Z35/MD.JPG Blog - Illusionist's Locket "MD" Side https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455064671089-WMM7K2H5UCUDLY20DV1A/DM.JPG Blog - Illusionist's Locket "DM" Side https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1455064671047-CYC9IK20OT4MUJYVFUY0/DW.JPG Blog - Illusionist's Locket In the oval configuration. http://www.davidsmiller.com/blog/kinematics-of-wheeled-mobile-robots-2016/1/30 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454456623560-SLMPMCF8PLBSUCS4PMI4/frames.png Blog - Kinematics of Wheeled Mobile Robots Reference frames. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454456644639-O47JTMNYJ9GVS56SYXZ0/cxy.png Blog - Kinematics of Wheeled Mobile Robots Robot reference frame showing wheel locations and wheel angle. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454454942676-XU0VBK21E9EZBSXYV95H/Screen+Shot+2016-02-02+at+6.11.34+PM.png Blog - Kinematics of Wheeled Mobile Robots Coordinate frame transformation yields wheel velocities required to achieve specified motion. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454454942451-1SLL2UOGVJ1VEYQ2O4GL/Screen+Shot+2016-02-02+at+6.11.47+PM.png Blog - Kinematics of Wheeled Mobile Robots Wheel rotational speeds and steering angles can be determined from the wheel velocity vectors. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454454942430-WUM00CT0QBT3Y04TWZ34/Screen+Shot+2016-02-02+at+6.11.56+PM.png Blog - Kinematics of Wheeled Mobile Robots Position vectors from the center of the robot to each of the four wheels. http://www.davidsmiller.com/blog/omniwheel-design-2016/1/12 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454616989823-OQRBMKWWWAE54UJXDHKI/omniwheel+render.JPG Blog - Omniwheel Design Rendering of the detailed assembly. Bearings and fasteners have been specced. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1452624823894-88R8NMWJX2C52Y1UIUVR/image1.png Blog - Omniwheel Design https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1452624824067-ROJH26X675VL7EQSUCPP/image3.png Blog - Omniwheel Design https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1452624824036-X1OZG9OGFE2DI9VX9PEW/image.png Blog - Omniwheel Design https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1452624864072-XQNZRC8P9EKTH6LQ4SMI/image4.png Blog - Omniwheel Design http://www.davidsmiller.com/blog/matlab-project-aircraft-designer-2015/11/5 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1446752632364-09RDDQ9RWM0IYQFOZCNX/aircraftdsgn.png Blog - MATLAB Project: Aircraft Designer User interface for the GUI. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1446752711624-0K7764PXGZCXGRL5S1DN/Screen+Shot+2015-11-05+at+2.44.25+PM.png Blog - MATLAB Project: Aircraft Designer This plot shows where all the loft curves are located relative to each other. This allows the user to confirm that all the components are in the right place relative to each other before exporting all the curves as text files. http://www.davidsmiller.com/blog/matlab-mini-project-2015/11/5 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1446751694830-0HE83IN3L0IXKPMBY9QI/propdsgn1.png Blog - MATLAB Mini Project: Propeller Design A four bladed propeller with 10ft diameter and an activity factor of 140, similar to what might be seen on the LAS Anthony. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1446751694846-Q92NH867GBFH76H6IUF3/propdsgn2.png Blog - MATLAB Mini Project: Propeller Design A jet engine fan blade isn't that much different than a propeller blade when you get down to it... But this is just for show! http://www.davidsmiller.com/blog/matlab-project-fuselage-designer-2015/10/12 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444669039346-OV1OAKJW5TWI25CRJXUY/Screen+Shot+2015-10-12+at+12.52.21+PM.png Blog - MATLAB Project: Fuselage Designer https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444757985358-FY1ZSA0O5YSF7G8MWZWE/Screen+Shot+2015-10-13+at+1.38.00+PM.png Blog - MATLAB Project: Fuselage Designer I added another axis to plot the side view and centerline. This is to make sure the nose and tail are offset from the centerline correctly. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444837542861-3WV85U1PD1X2IYG007JS/Screen+Shot+2015-10-14+at+11.44.21+AM.png Blog - MATLAB Project: Fuselage Designer Can now also plot internal layout of pax seats, cockpit, lavatory, and galley. These locations will come in useful for calculating center of mass and longitudinal stability later. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444837661261-VFQ69Z7L89LHES41H20R/Screen+Shot+2015-10-14+at+11.47.22+AM.png Blog - MATLAB Project: Fuselage Designer Area vs Length plot for Area Ruling. I havent accounted for wing/engine area yet; this is just the fuselage. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444758394564-0TT16DJ5X7E9NBR0KQXV/1st+image.png Blog - MATLAB Project: Fuselage Designer http://www.davidsmiller.com/blog/matlab-project-wing-designer-2015/10/8 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444333893287-G6E7NJB6WRK9RECVVTH2/Screen+Shot+2015-10-08+at+3.29.47+PM.png Blog - MATLAB Project: Wing Designer Jet transport wing. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444334089791-H0HJYGBNTAYKKHS4ARIH/Screen+Shot+2015-10-08+at+3.54.32+PM.png Blog - MATLAB Project: Wing Designer Regional turboprop wing https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444334093799-25G9XL34UH1VQUVZL91Z/Screen+Shot+2015-10-08+at+3.53.31+PM.png Blog - MATLAB Project: Wing Designer Supersonic delta wing https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1444334276792-1U8WV7FYYN4KXVWBCUIS/Screen+Shot+2015-10-08+at+3.57.33+PM.png Blog - MATLAB Project: Wing Designer 4 seat GA wing (C172) http://www.davidsmiller.com/blog/bike-brake-light-part-1 - 2015/6/19 monthly 0.5 2019-09-30 http://www.davidsmiller.com/blog/wind-turbine-analysis-part-1 - 2015/6/9 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1434760557382-JTOBSY6PF3OE5EYFNIO4/BladeModel Blog - Wind Turbine Analysis Here is a picture showing the 'slice' of the blade. Image Credit: http://fessrg.ucsd.edu/Research/Wind/ https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1433875904652-ZMP2DQP37G7RRV6V5LF0/image-asset.png Blog - Wind Turbine Analysis This image shows how much the actual speed of the blade varies with distance from the hub. Image Credit: http://www.cfinotebook.net/notebook/operation-of-aircraft-systems/propeller.php http://www.davidsmiller.com/blog/matlab-project-boids-aka-artificial-swarm-intelligence-simulator - 2015/4/14 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429059313171-WWXS3ZN34WTW7S3X9BP2/image-asset.png Blog - MATLAB Project: Boids, AKA Artificial Swarm Intelligence Simulator http://www.davidsmiller.com/blog/matlab-mini-project-accelerometer-gui - 2015/4/13 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429661320999-8BH5JO8HLSHXEFODIEY1/Screen+Shot+2015-04-21+at+8.00.43+PM.png Blog - MATLAB Project: Accelerometer Position Transducer GUI This is an analysis of some actual data from the accelerometer. The filter's effectiveness can be seen in the magnitude spectrum plot in the reduction of both noise and offset. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1429661321008-U90DZVUW4SVFIH08JTRN/Screen+Shot+2015-04-21+at+8.05.01+PM.png Blog - MATLAB Project: Accelerometer Position Transducer GUI This is the same data, but with #nofilter. I'm currently designing a hardware filter to replace the MATLAB filter so I thought a toggle button would be useful. As you can see, without filtering out the noise and the offset, the data make no sense. http://www.davidsmiller.com/blog/matlab-mini-project-standing-wave-generator - 2015/4/10 monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1428641888876-BWQXN8ZGLBJT0IL4TIS0/Screen+Shot+2015-04-10+at+12.48.56+AM.png Blog - MATLAB Mini Project: Standing Wave Generator https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1428641887990-05IPQUCJ36ZXP09S8I43/Screen+Shot+2015-04-10+at+12.49.32+AM.png Blog - MATLAB Mini Project: Standing Wave Generator https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1428641888020-1F698FN8BSMRZTYIVQA2/Screen+Shot+2015-04-10+at+12.49.16+AM.png Blog - MATLAB Mini Project: Standing Wave Generator http://www.davidsmiller.com/blog/2015/2/19/matlab-project-airfoil-generator monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1424364212970-67P1KCQ554NR28135CXY/airfoilGUI_screencap Blog - MATLAB Project: Airfoil Generator http://www.davidsmiller.com/blog/2015/2/3/mini-project-production-setup-for-tensegrity-rods monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998679329-V2Z2KUVYEBNSK8YFVKPM/IMG_5995.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods I missed some photos in the beginning. These are the two jaws of the vise being faced off with a flycutter while bolted together. This was to ensure that the surfaces were parallel and coincident. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998680125-OPZX3CYMTEW9L3F1GFMI/IMG_5998.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods I also had to cut stepper blocks to a certain size in order to ensure the vice clamped the center of the rods. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998681688-I76JCAMJT42HNAB0ZDQV/IMG_5999.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods This shows the initial setup. The vise is on the stepper blocks, and parallels are used to ensure the rods are vertical. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998688610-J1WXYBROHQZ7J5EVGCOU/IMG_6002.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods After tightening the bolts of the vise, I realized the vise was only gripping the two largest dowels. So I cut a piece of rubber to fit in between one of the vise jaws and the dowels to better distribute the pressure amongst the dowels. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998684700-LRYOZSPAGKRMLMM51X9U/IMG_6001.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998697834-PHC9PQ7RFIGL5IMLUR4U/IMG_6003.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods The first machining test. You can see the tops of the rods were clamped together using parallels. This helped a lot to reduce the variability. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1422998697309-G30E2QKVBRDJWBCD2Q5W/IMG_6004.jpg Blog - Mini Project: Tooling/Fixturing for Tensegrity Rods I used even taller parallels the second time, to reduce the variability more. This run had pretty consistent results. I just wish we had an endmill that was smaller than 1/8". http://www.davidsmiller.com/blog/2015/1/20/project-drafting-bars monthly 0.5 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1421799831425-XLX7C2KFPBI3F0PNL9CT/draftingbars1.jpg Blog - Project: Drafting Bars Original sketch of concept https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1421799831431-2FJOY47FI2NUYW1FFK1L/draftingbars2.jpg Blog - Project: Drafting Bars More detailed sketches of the parts. I ended up changing most of the dimensions. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1421790527606-LNX1QBQXBC9425C83N8P/iso.png Blog - Project: Drafting Bars Open Position https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1421790527478-YT7U69SSTWQIF5OTSP1M/top.png Blog - Project: Drafting Bars Closed Position https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1421790527495-3CA8LCVW2HNNCRVURY8X/angle.png Blog - Project: Drafting Bars 30˚! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1421790527520-36C484DY96VOGVY5LQN2/section.png Blog - Project: Drafting Bars Threads won't go that deep in the hole... 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https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1464103068065-AZWYMWZOPUML101U38QT/Website+Project+Gallery+-+11+of+12.jpg Projects Gallery https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1464103068248-ANSR4QMHCPY5MUV788GT/Website+Project+Gallery+-+12+of+12.jpg Projects Gallery https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1464103071328-XR5QQKEZDTV8JUC6MH6C/Website+Project+Gallery+-+12+of+14.jpg Projects Gallery https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1464103072040-B2FLO40TOBQB5CTGQIZB/Website+Project+Gallery+-+13+of+14.jpg Projects Gallery http://www.davidsmiller.com/portfolio daily 1.0 2019-09-30 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1401065592453-1HSEEHC9YBFRKPTQE026/IMG_4124.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399226960244-PK05CTEESH9SSQKRSJIR/biketrailer1.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383103790963-YLTKUPKQHTC2SC3S43SL/954782_10201102051047852_1010353859_n.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383103791105-RFV38707XS6EURZX4N4E/1002360_10151577864047965_805295780_n.jpg Portfolio - Raw Materials https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1383103791608-YHSPRAJ94VEINAD21QQH/1098240_10151577864177965_1818281658_n.jpg Portfolio - Cutting Members to Length https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399225441343-V2RZZ138TO1MBCFQ49X2/IMG_3601.jpg Portfolio Bending the tube. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399225451098-G6E1POWTD74EBLM1OJLM/IMG_3605.jpg Portfolio I gave the tube a gentle curve rather than one angle because otherwise the hydraulic press would crumple the tube. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399225446462-DY1WLHGWOX6CEFI3NYJ5/IMG_3522.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399225456282-JABBO51FCGE0D5EJ5S1U/IMG_3607.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399225935284-V0CPU0PNDW94UVXSTFWT/IMG_3611.jpg Portfolio - Demonstration of Weight Capacity After ramping up the weight with the objects in the lab, I decided to see if it could support a person. I let my friend Benjamin carefully step inside the trailer and sit down. As shown by the photo, there is a noticeable deflection in the angle of the wheels caused by the weight. I do not anticipate carrying such large loads in the trailer, but it is reassuring to know that it can handle them. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343269151-NGNB1UW546253B4V6PRA/EXPLODEDRENDER.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343269152-B1SO4FTOKP2LMAABAPBP/MAINRENDER.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343269507-RH91XB4PCJMWF3NTV5DF/MAINRENDER2.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343295989-RYN132XF1S8KCNZKOOCM/frontrender.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343623436-ZK1I0T3VAE2NAROP7Y0S/siderender.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343924865-UR4T7N1BGSPM04B0A2QB/camerarender.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1386343938695-KK5WX49YN5IL0A7DA8X4/assm_drop_test-Study+2-Image-1.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1387821650144-15XYJZ72U2M7DFZ27O91/iphone_5_case_body_drw_R3.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1387821651387-NCU8UHGEJ51FCJY2MSER/iphone_5s_case_faceplate_drw_R2.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1387821657322-7YEVEDEU55JGVNVIQPRR/iphone5_case_assm_drw_R2.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1390869134364-1YHQBSUME1T05SJ7QOPD/finalrender_2.JPG Portfolio - Rendering of Final Product https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1390869134616-YEZEQTIU9W1K1AVV88H3/inside_1.png Portfolio - Inside the gearbox https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1390869157356-U5HA0USMNURNI0BJG1KY/exploded.png Portfolio - Exploded View - Housing Only https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1390869137339-I20OIWALTWHGOG8MAYHC/top_view.JPG Portfolio - Top View of Drivetrain Components https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1390869158135-GPJS9J2PDRF7X4FFY6BH/exploded+inside.png Portfolio - Exploded View - Drive Train https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1390869139760-0PS0CTHIM6TL4AMQ2GDV/main_render.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224267868-VO2RDHP0C1T6DROG33YD/TrussTesting.JPG Portfolio - Test Day Here is our completed truss in the testing rig. Our truss came in 4th place for highest load sustained. Our truss also failed exactly when we predicted. This was more important to our grade than how much we actually ended up holding. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224078990-IBI9IB6I2DEFRNPTIODB/IMG_3808.jpg Portfolio - Assembling the Truss I made a scale drawing of the truss to aid in the assembly. A pinning jig was used to create holes in the straws in the right location. The gusset plates were cut to the right size and shape with an X-Acto knife. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224015672-J961JMJSB25CEUFH7RVM/TrussCompleted.JPG Portfolio - Fully Assembled https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399219323339-ADRWFCEH5J1T0TFO2LPV/FinalTruss.png Portfolio - Truss Plot The program plotted the truss and displayed the critical members(s) in red. I also added the ground supports and the arrow for the load, just for fun! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224371556-C4O01GG3CTTRTSSQJDGY/1+VJR.jpg Portfolio - Optimization These dots constitute a Virtual Joint Region (VJR) - a collection of possible locations in which to place a joint. In the optimization, the user can select which joints to optimize, and the size and density of the VJRs. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224371551-ZWQ7UJ7I8N781DQ5Z3CC/1+joint.jpg Portfolio - Optimization This shows how the optimization works. For each location in the VJR, the program re-analyzes the results. Each location in each VJR must be analyzed with each location in every other VJR, so it can take a while to solve! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224371806-V7ZV3WDTR2NOX4HZH6BN/Large+empty+VJRs.jpg Portfolio - 5 VJRs, Low Density https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224372046-S6FWGGSG872J7RTK82P3/Large+VJR.jpg Portfolio - 5 VJRs, High Density https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224372049-DWXP8ZYOYVJU5A2KWL03/small+VJRs.jpg Portfolio - 5 VJRs, High Density and Smaller Area https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1399224371770-L5BCDDT2K2HB8DR2P1C1/10+VJRs.jpg Portfolio - 10 VJRs, Low Density https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417925477821-EIWH4F81DUB3FLYNW0MB/exploded-labeled.png Portfolio - Exploded View - Final Assembly https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932437958-RGG9QPTP23W9P6T3867Q/image.jpeg Portfolio - Start to Finish This photo shows sort of a timeline of our project: on the far left is the customer's original body. Next is their assembled product. In the middle is our 3-D printed prototype. 4th is the first attempt at machining the body, where the threads failed to mate. On the right is our completed prototype! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417925475146-LK0YW8PB90W5T00TFBX1/section.png Portfolio - Cut Away View This cut away section view shows how the components are arranged inside the body. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417963875598-BBJXJFR49NAVZM5I472A/section-labeled.png Portfolio - Subassemblies Here, the threaded subassembly and piston assembly are outlined to show how everything fits together. Also highlighted are the air inlet holes. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417964012736-A898UR873IHYGAUBZ23A/BOM.png Portfolio - Function Analysis Chart/BOM This chart lists all the parts for the final assembly, categorizes them (standard, custom, or unchanged from the customer), and briefly describes their functions. Notice that many parts/assemblies still have multiple, coupled functions. However, decoupling all functions would be very difficult and would likely result in a very expensive product. Good design requires compromise. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417925476106-0L6JJ8RDDC8TJ1LMKML6/threadedstress.png Portfolio - FEA of Press Fit We wanted to make sure the threaded insert could handle the stresses of the press fit, so we did a quick static FEA to verify stresses were in normal limits. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417925476938-WG90MPQSG3KIPOC45C2G/threadedstressiso.png Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417925477768-ORH502KZDG6YM9RCDTWL/threadedstresssection.png Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932289448-PUOBQA2EKYW9OC2NPRWW/image.jpeg Portfolio - CNC Machining the Body Check out that coolant flow! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932265812-BR0348B2PIPG65RXRKVM/image_1.jpeg Portfolio - CNC Machining the Body https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932272224-MGAQF0OIBE4JFVAVVQNF/image_3.jpeg Portfolio - Press Fitting the Threaded Assembly The piston assembly goes inside, on top of a gasket for maximum sealing. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932272636-13H20B8X7N1ZWA5G1XCA/image_4.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932282570-GIZP82XKFC9YMQGZCZ2E/image_5.jpeg Portfolio - Press Fitting the Threaded Assembly This is the pipe section we used to distribute the load onto the ring. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932279453-63VPH27JFIBJGW27LY7H/image_6.jpeg Portfolio - Fully Assembled! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932285881-CW7DLYBB5CTEH1HHDHNR/image_7.jpeg Portfolio - Disassembled If there is a problem with leaks, the threaded assemblies from each side can be tested individually. If the leak is coming from the subassembly, it can be discarded individually, while saving the body (the most expensive part). https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932304234-ZJWUPEG9XR5KM7179C01/image_3.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1418359587568-KSITEA5JYVCBTDEGW9IW/image_2.jpeg Portfolio - Jig for Machining the Body We made this jig from scrap aluminum and some dowel pins so that we could clamp the body down to drill the air inlet holes at the correct angle. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932309276-G9T0VC7IJDN3YCSB8BCA/image_4.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932313823-AMAQZ0IV8PO9IG8WQRB4/image_5.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932319526-22PMWL540UVIQOE0LFW3/image_6.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1417932318672-WQ1ELKG3HMN7LOG6FSKL/image_7.jpeg Portfolio - Air Inlet Holes The feature where the hole emerges is extremely thin. We did not measure properly the first time and ruined a part... But we learned from our mistakes and nailed it the second time! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426979430265-T72G7SKFIG9F6K2QZHLC/IMG_6065.JPG Portfolio - Drafting Bars https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426979430991-N12OV0IUIYUYDYGYZ3VD/IMG_6067.JPG Portfolio - Parallel https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426979430630-J0L9YEWWL2X0PMWYR3YR/IMG_6066.JPG Portfolio - 30˚ https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972541209-WJ4806Q03OJYRKHZROWU/IMG_6041.JPG Portfolio The connecting rods were spot drilled and contour milled on a Sharp 3 axis CNC mill. I drilled and reamed the holes after. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972531749-23WUOAIV4LSSFA8FB56I/IMG_6052.JPG Portfolio I couldn't find any thumb screws with the right head size I wanted, so I turned my own from a brass rod. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972535298-GDT2CYC5ZR14RDXYO97A/IMG_6055.JPG Portfolio A beautiful, gleaming brass rod. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972538218-BAOBCNFBXKG03C3P4HEX/IMG_6056.JPG Portfolio Tapping the shank with a 10-24 die. I used the tailstock to keep the die straight. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972539602-F3RXA583A170552YC18V/IMG_6057.JPG Portfolio Aligning the knurling tool using the chuck. Knurling was surprisingly difficult. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972542267-XZWZ3GEPVMB5J9ZE0V9U/IMG_6042.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972544626-HGK0WFTLJSDUVP3EMIE3/IMG_6043.JPG Portfolio Flycutting the bars. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972545622-EJ8VO6LI3GK7JRKIH5AA/IMG_6044.JPG Portfolio Milling the horizontal slot. This took forever. I had to use .025" passes just to get an acceptable finish. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972610680-I0214IAUCJ68S2TPLQ1Y/IMG_6045.JPG Portfolio After milling the first bar, I put the rods and binding posts in. Starting to look like the drawing! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972532375-ET4PW0XKWBFPUVQTMOJN/IMG_6054.JPG Portfolio The bars in the 30˚ position. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441594262194-M3J8RKPE42URNN5M7D7X/pic2.png Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441594262565-MCRBJZQ6QKHST9QV6DSV/pic1.png Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314684863-M4TQIVFEZT414HNUOIMA/IMG_6577.jpg Portfolio - Microbend Mode Converter Device https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314756226-FCTY6LJ61MQFZ01TMIYW/IMG_6575.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456766900-ACPWE6K0TPRY16O6L52K/IMG_1286.JPG Portfolio Mode converter with the micrometer mount removed. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456754808-UKC6VGURGDVFZ9W9HDN5/IMG_1284.JPG Portfolio - Grating Plate This was side milled with a double angle chamfer cutter. The work was held in a custom fixture. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456752924-CIGH04GYA6MEQKEUCZJF/IMG_1285.JPG Portfolio The ends of the grating plates were marked so we wouldn't mix them up. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440125894986-OCZROC2AIC0F8AAPJZ1I/IMG_6560.jpg Portfolio These are the teeth of one of the microbend gratings seen on a comparator. The comparator was used to verify the tooth profile and pitch of the teeth. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440125910740-07U8WBFN0GIKYG6HX5H1/IMG_6593.jpg Portfolio This is the 12" x 12" acrylic cover used to protect the demo during operation. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314361358-9DKH2FKV9Q4YZ4D7KMPQ/IMG_1274.JPG Portfolio Demo breadboard as seen from above. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314361955-IGQVZRJWZHBESZJYPQZC/IMG_1275.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314364749-Z5N9RA0ICMBQS75F58NP/IMG_1276.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456552560-Z64XW6NT79LV32JPF2AW/Fios+Schematic.png Portfolio This is a schematic of the demo. All the fibers are SMF except the vortex fiber. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314371930-0SYPGHM6RRWWQ24JESX5/IMG_1280.JPG Portfolio When the HeNe laser is on, small random microbends in the fiber cause light to escape, which makes the whole thing glow. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314383725-GSTCJKF56TS4VH5SS8K1/IMG_1282.JPG Portfolio This is the spiral fringe pattern caused by the interference of the OAM and the fundamental modes on a sheet of paper. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441314382641-TLMI4PECIWE77XRTW3O3/IMG_1283.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456765883-G0AN3M6T2A0FCDMNBS4X/IMG_1296.JPG Portfolio This is the interference pattern before the microbend is applied. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456778327-2SE0ZFQI2SH7B77HMPXA/IMG_1298.JPG Portfolio Once the microbend is applied, the spiral forms from the rings is the interferometer arms are aligned properly. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456777633-3TARKZ80JTXCBZFPX1YC/IMG_1299.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1441456783330-L9ZJOJGMGQMDZPIXWU8B/IMG_1300.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440279540024-0T0LS27OP2UYESFUZ9HV/memorial_plaque_1st-render.jpg Portfolio The design viewed in ArtCam. Here, the text is nicely centered. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440279563253-DZCGMNER00WLFHHR90MC/IMG_6612.JPG Portfolio Before engraving, I used a Scotch Brite wheel to give the surfaces a nice brushed finish. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190551150-NMUJVL747ID4MYY7PXIA/IMG_6613.jpg Portfolio Marking the center. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190551066-BZ5NEHYBRJGAN4K1VCWC/IMG_6614.jpg Portfolio Fixing the work. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190551373-0OJ6F513GJJ50PREVHJJ/IMG_6615.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190551531-B7HU8Z33K9Q96H304Y37/IMG_6617.JPG Portfolio During the first run, the tool broke halfway through. So I unfortunately ended up missing the deadline to have it ready for the memorial ceremony. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190552025-P7BKN093WAL73DWKCGPI/IMG_6618.jpg Portfolio The broken tool. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190980542-D9H5KCYN45G45A2NKP7L/finished_plaque.jpg Portfolio I ran the program next day with a new tool. You can see how the text got left justified from the design. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190557822-Y0F420ZK79JVJUKVR5CV/IMG_1245.JPG Portfolio Plaque and fasteners completed. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190562694-HO7FG7SEIAHKURSUI1W8/IMG_1247.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190565165-EAE0RMMTGH9LA12WO77O/IMG_1248.JPG Portfolio View of the clamps. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440190567710-L92J6I49GNO7VBV1GDXO/IMG_1249.JPG Portfolio Close up of the clamps. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440279299179-IU2PU1VPM0F75U2LDJPD/IMG_1256.JPG Portfolio Plaque mounted on the Ghost Bike basket. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440279299407-67N85QW82JH3NUCHFMK2/IMG_1258.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1440279295951-PYMSJEDYA3T9I62CP5IU/IMG_1253.JPG Portfolio The Ghost Bike with my bike next to it. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1453575640227-2MIZ8BLT57WPXP6EI6MI/r3.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1453575640064-QRTR7XE1XIAHW3VHP4A3/r1.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1453575640486-PARD2EOC2DGF2BWBH8GG/r2.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1449868846038-VDPCCN2NVE0ASW23EJNP/Las+anthony+take-off.PNG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1449868846056-WCB00W99VMBQV4XR654Z/LAS+anthony+climb.PNG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1449868846170-P58O842OSPTW3T3U1WCL/image.png Portfolio Seat Layout: 50 pax for regional airline variant. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1449868846191-ITDHMAFIB40GVII5GI7F/2.png Portfolio Main Gear retraction. Need to add a large wing fillet/blister to fully encapsulate the gear. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1449868846395-54VJM78TJM2IT8ZCP3SL/3.png Portfolio Nose gear retraction https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1445132146777-MDPI6P93K2OM24QOE4WG/TF_area_rule.png Portfolio Additional fuselage area rule plot from the MATLAB GUI. The areas of the wings, stabilizing surfaces, and engines are not yet accounted for in this plot. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1446609189400-CKVBWPTOVBCNPSJKKER8/LAS+Anthony+Turboprop+cad+screenshot.jpg Portfolio This is the first 3-D model of the earlier turboprop concept of the LAS Anthony. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1446753833200-RFJ4ERVYUD60T6JJVDDA/aircraftdsgn.png Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460398723713-UBMYEMOPSKEWHTYKZDB9/IMG_7345_2.JPG Portfolio Rendering of the prototype robot, cubicle, and breaker. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460398750038-IEPW01C8H7XE234NM16U/IMG_7353.jpg Portfolio Wiring and systems integration. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460400122730-GPMS3BS157FZVNQC6888/IMG_7150.PNG Portfolio Overview of the software architecture. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460399261744-KYZY68SAQHUEFCU53JNB/Power_Distribution_Board.png Portfolio Diagram of Power Distribution Board (PDB) https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460403353733-SXXFOIRDO8PQPG8T8KKC/breakerbot_control_block_diagram+copy+2.png Portfolio Control system block diagram in Simulink. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460399261546-4GVORNPCPT9MMVCLD3AL/VEX+PWM+Motor+Control.png Portfolio Depiction of motor controller signals. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460399086961-UN6P4RJN3XXD12R81K1F/IMG_2727.GIF Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460399261853-XK9ZDHMHK081JIOMFI07/20160302_131451-ANIMATION.gif Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460401111742-6FVIS1PQ92O6MVH174YB/IMG_7347.jpg Portfolio Breaker extraction/insertion mechanism. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1461708747716-E7KUANV15L0N53ZSYES5/Screen+Shot+2016-04-26+at+4.01.18+PM.png Portfolio User interface to control the robot from any computer. You can see the image processing uses the bright yellow tape for alignment. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421761753-F1G0Y58WHRMDHA7ULT2Z/IMG_7076.jpg Portfolio Initial prototype used ballmill for the semicircular feature. The surface finish and tolerance were unacceptable, however. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421772346-E73UVVO49Y26U9PYY7WS/IMG_7146.JPG Portfolio Experimenting with patinas https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421777637-FOXSQACB35RUK47Y5I8N/IMG_7214.jpg Portfolio Turning the hinge pin https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421781697-X99VNFGMMITXIHJEGVX5/IMG_7215.jpg Portfolio Took an overly aggressive cut and ended up tempering the chip. Note that it starts out normal than changes to straw, then blue... https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421783992-D4IEK5FIYEZA3UYKA71Y/IMG_7217.JPG Portfolio Made to spec https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421792796-HU6WU06AVCHY5KFYKMUU/IMG_7228.jpg Portfolio Hardening the steel pin https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421804977-8V9QCNMRECTOKXONQ2V0/IMG_7229.jpg Portfolio The hardened pin https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421808075-FETFD5WQWL6JN81EN9HI/IMG_7231.jpg Portfolio Rockwell C hardness test https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421836507-JXXDL0B6QPBIPMJQ4NF3/IMG_7242.jpg Portfolio Testing the corner rounding operation https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421841900-O0DKSN1U3Q9LJ9QFNNUG/IMG_7243.jpg Portfolio Testing the drilling of the semicircular features. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421844854-3IP6FC6XM4PWAZ70UYX7/IMG_7244.jpg Portfolio Drilling undersize for the reamer. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421850472-0BJCWSWLMK7OEIY9CVY5/IMG_7245.jpg Portfolio Reaming the hole for a nice finish. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421853270-5I6F2BUIT76INCMZB438/IMG_7246.jpg Portfolio Chamfering the upper edge. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421858638-DDYHP2JJNOCUX3MWTFDP/IMG_7247.jpg Portfolio Side view of the hole https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421861747-A4VBK9N2CHGSVFVE13WY/IMG_7248.jpg Portfolio Top view of the hole https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421870041-1EGPCESR5BYP1TUSFAP8/IMG_7251.jpg Portfolio Polished aluminum prototype. The corner rounding is a really nice touch. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421878434-IW3X1TQ09NAWYXC9I0SV/IMG_7264.jpg Portfolio CNC-ing the copper https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421887851-JPVY5PET0Y0UHOUTYT0T/IMG_7263.jpg Portfolio Making the tapered barrels https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421898303-JGDLQO8RHQK90AYBC52M/IMG_7269.jpg Portfolio Checking the taper https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421907414-U4WVI9WD7CDH7YJCUOIQ/IMG_7266.jpg Portfolio All my work thus far! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421917737-ALDW16SIZ6IO40C23DIS/IMG_7272.jpg Portfolio Pieces for the final product. I need to cut the barrel in half or make two and mill the upper half away. I did the latter. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421936909-MJ5HYSEZA2U4JF3GC5XW/IMG_7279.jpg Portfolio Drilling the counterbore for the head of the hinge pin https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421940930-3D86QYG0JE1QKMQ71AHB/IMG_7281.jpg Portfolio Not deep enough https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421944086-NTITBC4SMBP3LHJMWY0O/IMG_7282.jpg Portfolio Just right https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421960851-TGKDU3LQJ0KJWNQ2IG4B/IMG_7292.jpg Portfolio Locating holes the old fashioned way: with a transfer punch! https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460421965487-BDOCSJOYE9MNDBKXJ2S7/IMG_7293.jpg Portfolio Drilling the hole for the pin press fit. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426982294563-OERYMNYIG6LZGNDC4IG2/IMG_6065.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1428983289582-PQH927QQ65H7ARED4S03/Screen+Shot+2015-04-13+at+11.01.40+PM.png Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415512608991-HLWN27WIRWBDXKL5UEOV/finalrender_2.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415512846216-ISJLF47DP9J6IQMBM7G1/TrussTesting.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415512896139-P0Q4VKO6NH1WU9WEFPQC/MAINRENDER2.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415513009689-SISQW5MB3D2XB75DT1CM/BikeTrailer.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454544022501-89PXBS8TQ94H0EQPW34I/msa.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454616204453-D3SKMW6P1VQJ26ARQX0D/disk+brake+exp+render.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454616491506-IMDSG56N5NN34XJ4T12X/microbend+render.JPG Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1454617167883-3PFMR9X9E4GBTWFALFT3/plaque.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460425130567-9A8X5WOYERP2AK538IER/IMG_7272.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1460489496107-HGA14915YG1GDZ41WMIP/full-assm_action_render_perspective_4-12.png Portfolio http://www.davidsmiller.com/gig-calendar daily 0.75 2019-03-23 http://www.davidsmiller.com/gig-calendar/as-seen-from-space-on-429-the-midway-cafe-2019/4/29 monthly 0.5 2019-03-23 http://www.davidsmiller.com/gig-calendar/august-4th-mcganns-2018/8/4 monthly 0.5 2018-06-30 http://www.davidsmiller.com/gig-calendar/july-4th-9pm-the-middle-east-zuzu-2018/7/4 monthly 0.5 2018-06-30 http://www.davidsmiller.com/about daily 0.75 2018-05-26 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1426972367066-QQYC0B2IM3F2ARINHQ26/pro_pic.jpg About https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1418358166985-SLRQHS0HYQCBN63ZR30Y/pro_pic.jpg About http://www.davidsmiller.com/cable-tie-cutting-mechanism-1 daily 0.75 2016-05-24 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372686003-ZAIK983W9F2GF0XZSX06/cover_pic.png Cable Tie Cutting Mechanism - Conceptual Design This is more between conceptual and detailed design, as I did some calculations to find the optimal length for the members. However, I did not think too much about DFMA for this design. Looking back, there are a lot of things I would change to make this design more manufacturable. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372726879-NADTEUW4RAZ5TL3LOP1C/image0000.jpg Cable Tie Cutting Mechanism - Initial Concept https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372752216-SEGJQ9WGQ7Q2CX14HAPM/image0001.jpg Cable Tie Cutting Mechanism - Blade Holder Concept - Iso View https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372793129-26WTG7XLII0RYKBVXRXE/image0002.jpg Cable Tie Cutting Mechanism - Blade Holder Concept - Section View https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372686241-RVFGIBL1EHL3EUKNVOLA/exp_blade_holder.png Cable Tie Cutting Mechanism - CAD Blade Holder Exploded View https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372687682-AMN2R59X0B9PU7SUM0B9/side_view.png Cable Tie Cutting Mechanism - Geometric Parameters This image shows the parameters used in the static analysis in MATLAB. By adjusting these parameters and re-running the code, I could get the mechanical advantage required by my other calculations. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372686263-VASMWSNUPUXL6FJVVGA1/handle_spacing.png Cable Tie Cutting Mechanism - Optimal Handle Separation for Maximum Grip Strength https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372687476-BOF7PZPCNIEAE8DE8JRM/Iso_stress.png Cable Tie Cutting Mechanism - Static FEA of Blade Holder I wanted to know the stresses in the blade holder that would result from tightening the screw. I was mainly concerned with bending stresses on the bridge between the right and left hand sides, where the material is thinnest. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372685950-DLXJ55EAVF6Z3M1SI5OL/bottom_stress.png Cable Tie Cutting Mechanism https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415372687590-SLXCKDXRZ6VOFRYD2PJN/section_view.png Cable Tie Cutting Mechanism - CAD Section View of Blade Holder Assembly The #10-24 screw together with the boss provide a clamping force for the blade when they are tightened. The screw also goes through the hole in the blade, so it doesn't fall out even if the screw gets loose. https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1415371908765-7TGKXW4X26D28AOIQ4JT/cover_pic.png Cable Tie Cutting Mechanism http://www.davidsmiller.com/about-1 daily 0.75 2023-12-16 https://images.squarespace-cdn.com/content/v1/5269e87de4b0f35a9eff7300/1554047146436-KCVRNJB5JZVZ0BQX13JA/pro_pic.jpg About