156B Week 8

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

- Design completed.
- Almost done with fabrication.
- Testing PID controls for weight shifting.

Accomplishments from Previous Week

Completed and implemented code for closed loop control of linear slider.
Removed need for boost converters for stepping logic signals from controller to drivers - not responsive enough to use with PWM and driver threshold was low enough that they weren't necessary.
Begun fabrication of weight ballasting.
Designed electronics bay for keeping electronics and wiring neat and safe.

Goals for Next Week (list names after each item). Use specific and measurable objectives.

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

- Acrylic is brittle, try Polycarbonate or redesign for aluminum.
- Replace corner brackets with L brackets
- Consider upgrading linear slider materials to final quality rather than 3D printed and plastic.

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

Risks and Areas of Concern

- Beaglebone caught on fire, almost definitely due to two loose, unused wires that were hanging either shorting or touching a high voltage source. We think it was from these because the IC that controls these wires was the source of the flame. Need to check wiring before further testing. Using team member's spare Beaglebone for now until new order arrives.

Resources or Information Required but not Available

Schedule

Budget (list amount spent and amount remaining)

Progress on Report and Webpage

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