Work Night 1.3.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work Night Date: 1.3.19 Location: Logan HS Time: 4:30-7:00 PM Students: Thaying, Paige, Alex, Thomas, Tanner, Avery and Seth. Goal: Solder the surface mount components for our Buck Boost charging system and work on improvements to the generator mount. Great progress tonight! We started to solder the surface mount components in the charging system. This is not an easy process as surface mount soldering requires an entirely different level of concentration and attention to detail. Everything was going well until we started to solder on the Buck Boost chip. It was soldered in with the orientat ..read more
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Work Day 12.27.18
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work DayDate: 12.27.18 Location: Logan HS Time: 10:00 AM- Noon Students: Thomas, Avery, Alex and Seth Goal: Attach the newly 3D printed generator mount and work on the electrical requirements for the buck boost circuit. It is the holiday break and team members are still coming in to work on the project. Alex, Avery, Seth and Thomas took time out of their vacation to come into school for a couple of hours to work on the 3D mount and some electronics. Seth modified the generator mount design after we started to attach it to the limb. We found 4 or 5 areas that needed modifications to ensure a ..read more
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Logan InvenTeam Energy Management System for a Prosthetic Limb
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Logan InvenTeam Energy Management System for a Prosthetic Limb During the 2018-19 school year, Logan High School in La Crosse, Wisconsin was one of 15 schools in the nation to be selected as an InvenTeam and awarded a grant through the Lemelson-MIT program. The Logan InvenTeam designed and built an energy harvesting system to extend the battery life for vacuum socket units in above and below knee prostheses. This will greatly improve an amputee’s freedom by extending the time he/she can use the limb without being restricted to plugging it into a wall socket to recharge. The Amputee Coalit ..read more
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Work Night 12.13.18
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Date: 12.13.18 Location: Logan HS Time: 4:30-7:00 Students: Paige, Alex, Avery, Seth and Thomas Goal: Solder connections on tester and put it under load to see how it performs deflecting the heel 0-1/2". We also want to see how our software program reacts to higher voltages. We spent the majority of the time trying to get the tester ready to go when put under load. Paige worked on a footpad to create a heel deflection. Thomas and Alex worked on soldering and connecting the electrical. After a broken drill bit, we mounted the foot pad and were ready to test the "limb tester". Everyone got safe ..read more
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Media Day 5.22.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Media Day Date: 5.22.19 Location: Logan HS Time: 9:20-9:40 AM We hosted a media day at Logan HS to demonstrate our Energy Management System for a Prosthetic Limb invention and practice our presentation for EurekaFest. Attendance was very good and we had a number of sponsors, parents, business partners and politicians that show up along with three TV Channels and one radio channel. We started off by doing the 10 min presentation that we will be doing at EurekaFest. We had it timed down to around 9 min. and we were right on. We then opened up for questions from the audience afterwards. We did ..read more
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Work Day 5.15.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work DayDate: 5.15.19 Location: Logan HS Time: Morning about 3 hours Students: Austin and Paige Goal: Create and adhere stickers to simulator to promote the team and the Lemelson-MIT program. Just some detail work that needed to be done on the tester. Paige and Austin made stickers for the tester to "dress" it up a little bit. This was the first time they had done this so using the vinyl cutter, weeding, and taping the stickers was a learning experience and they had fun doing it. A welcome change of pace from soldering or working with oscopes and multimeters to test faults. Paige and Austin ..read more
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Work Night 5.9.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work NightDate: 5.9.19 Location: Logan HS Time: 5:15-7:15 PM Goal: Change over generators on the heel strike simulator (limb tester) and work on EurkaFest PP. Students: Paige, Caitlin, Tanner, Seth, Thomas and Alex. The work night and week leading up to it was mostly positive steps for the team as we progress toward EurekaFest. We finally finished the essential testing of different generator outputs and have come to the conclusion that the 18 V generators (as a reminder we are using stock DC coreless motors as our generators) give us the highest output for current and efficiency. The new 12 ..read more
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Work Night 5.2.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work Night Date: 5.2.19 Location: Logan HS Time: 5:15-7:30 PM Students: Paige, Caitlin, Austin, Tanner, Seth, Thomas and Alex. Goal: Continue to test to see which motor configuration gives us the most efficient output and test our new Bluetooth module. We spent some time on Wed. morning working on the tester and mounting our new smaller Bluetooth module so we did not have to do it tonight. The new module is much smaller than the original one Austin designed which used an Arduino Uno. We are not using an Arduino Nano which gives us the same functionality and is 75% smaller which helps us with ..read more
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Work Night 4.25.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work Night Date:4.25.19 Location: Logan HS Time: 5:15-7:15 PM Students: Avery, Tanner, Seth, Alex, Paige, Thomas and Austin Goal: Test new generator configuration under load. We have been having more difficulties with our limb tester. We blew a 12.5 microFarad capacitor and need to order a new one. The capacitor is used in motor startup for the tester. All testing stopped until we got it back up and working. Also, some of the bearing and moving parts needed to be greased and refitted with normal wear and tear occurring from use over the course of the year. Once we fixed the tester we were a ..read more
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Work Night 4.11.19
Logan Ranger Energy Management System for a Prosthetic Limb
by Logan HS Computers, Robotics and Electronics
4y ago
Work Night  Date: 4.11.19 Location: Logan HS Time: 5:15-7:15 PM Students: Tanner, Seth, Alex, Paige, Austin, Thaying, Avery and Thomas. Goal: Test the new charging circuit for functionality. We needed to test the updated charging circuit and had a problem with one generator outputing the correct voltage. It seemed one of the generators was not functioning properly. When we cycled the tester, we were only seeing one output on the oscope. We felt it was a mechanical malfunction, but after some testing we determined both generators were functioning in the new mount we 3D printed with the (gray ..read more
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