156B Week 6

Week 6 Progress Report

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

• • Pushing forward with wire actuation design with regards to purchasing and making

  • Waiting for magnets for other design

Accomplishments from Previous Week

• • Setup Raspberry Pi and test actuators (Everyone)

  • Made dxf file for cutting gears for steering mechanism (Ciara)

  • Ordering things like magnets, electromagnets, and another stepper (Damian)

  • Eliminated diaphragm design for actuation (Everyone)

  • Picked a new battery based on wire actuation design (Ciara)

  • Install OpenCV on RPi (Michael)

  • Program RPi to run stepper motors (Michael)

  • Document testing and update website (Michael)

  • Made contact other groups with RPi (Michael as lead with others)

  • Did simple calculations of force for magnet actuation and wire actuation (Trevor)

  • Added remaining parts to CAD for final design (Ciara)

  • Test capabilities of new motor (Michael and Trevor)

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

• • Buy another battery, controller board by end of Monday morning (Damian)

  • Ask where to buy o-rings and hardware...possibly Marshalls (Trevor)

  • Buy velcro, o-rings, and hardware like inserts and screws and nuts from the place no later than thursday some point (Ciara)

  • Buy/Order new RaPi and new RaPi camera (Damian)

  • CAD stuff not caded like: imu and other sensors (Everyone)

  • Build complete actuated prototype (Everyone)

    • Buy the delrin by Monday Night (Damian)

    • Computer design of machined o-ring seal, delrin gear hole places by Monday (Ciara)

    • Gasket and o-ring standrad sizes, selection, suppliers, and creation and communicate the sizes needed to Ciara  by Tuesday (Trevor)

    • Printing out  and designing test tentacles by Wednesday (Damian)

    • Machine o-ring seal or get Tom to do that by Tuesday (Trevor)

    • RaPi coding for main motor (Michael)

    • Computer design of housing (selecting hardware and sealing techniques) for printing by Wednesday (Ciara)

    • Put together entire thing on Thursday (Everyone)

  • RaPi coding for steering motors (MIchael)

  • Update the Gantt Chart  (Trevor)

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

• • None

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

• • Have a lot on your plate

    • Putting magnetic actuation on the back burner while waiting for the parts

    • Going to mainly pursue wire actuation this week to get a prototype

  • Look into diaphragm with a lip

    • Putting the diaphragm idea on way hold to focus on other actuation methods

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

• • None

Risks and Areas of Concern

• • Time and purchases

Resources or Information Required but not Available

• • None

Schedule

• • Upcoming Milestones

    • Building actuated prototype

Budget (list amount spent and amount remaining)

• • Total Spent: $687.01 Total Remaining: $1812.99

  • Magnets and Electromagnets for $96.02

  • Another Stepper motor for $54

Progress on Report and Webpage

• • Updated report with revised sections

  • Uploaded CAD models and budget information

  • Updated Gantt chart?