http://web.mit.edu/nouyang/Public/Apply/portfolio.pdf
Injection Molded and Thermoformed Yoyo
2.008 Yoyo project (ongoing work in progress, Fall 2011)
 |
| Preliminary CAD design |
Nyancat Paperweight
 |
| MasterCAM with EZTrak CNC Mill. |
Summer 2011 Manufacturing Exercise (done for fun).
Based off of an existing design found online.
Details
Mechanical
- Frame welded together from 1'' and 1''x2'' square steel stock (MIG welding, horizontal bandsaw, milling out 1/2'' and 3/4'' holes with step drill)
- Bolts and nuts from McMaster
- 2x wheelchair motors (ebay)
Electrical
- Powered by A123 12V lead-acid replacements
- Arduino used to process two foot pedal potentiometers and a switch for forwards/backwards (eventually will move to joystick + analog circuit)
- 2x Victor motor controllers (PWM input)
- FRC kill switch
 |
| In-progress at MITERS |
 |
| First outside test, 8/23/11 |
 |
| @ NYC Maker Faire 2011. http://www.youtube.com/watch?v=OOLkBiJ0wKQ&t=1m1s Video taken by Shane Colton (yay thanks!). |
Todo, 10/17/11:
- replace wooden feet with tennis balls
- make analog circuit / make enclosure for electronics
- build motor controller (get rid of victors, overkill for my use)
Hexa-dancing-pod
Details
Mechanical
- Frame hand-cut out of ABS plastic (vertical bandsaw)
- 18 servos, 6x VS-2 and 12x HTC-311s
Electrical
- Arduino nano as main processor (on 2.007 carrier board)
- No sensors yet
Software
- Currently hard-coded sequences. See: https://github.com/nouyang/18-servo-hexapod/blob/master/pololu_jun17a.pde
Please mute sound if you watch this video -- lots of background noise.
 |
| Retroactive CAD in Solidworks. |
 |
| Completed prototype, |
 |
| @ Cambridge Maker Faire 2011. Bottom-most is a small linkage-style hexapod prototype. |
Todo, 10/17/11:
- Write software for dancing
- Laser-cut a new frame (acrylic or balsa wood) (Invest in newer, more powerful servos?)
- Add sensors
Cut from 3 sheets of acrylic on the lasercutter, glued together with careful application around the edges of contact cement.
