156B Week 3
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Created CAD model for the frame of the device. Discussed pieces to purchase and reevaluated the design to make it more cost efficient. Currently finalizing a CAD model and preparing to purchase pieces
Accomplishments from Previous Week
Revised CAD models for new belt/pulley and rail design.
Completed CAD models for revised framing.
Completed revised CAD and BOM for arm support subsystem.
Completed material analysis of platforms for arm support.
All electronic parts have been delivered.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish assembly of arm support after buying items from Home Depot
Begin prototyping of electronics and UI.
Test motor for torque/speed to check performance.
CAD and prototype 3D prints for revised brush holder.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
April 17, Zoom meeting with Dr. Case:
Confirmed that the $500 in the budget originally allocated to the EBU2 machine shop had been refunded and was added to the total budget. The total budget is now $1600
We presented two different scenarios for ordering parts. (1) is a conservative approach where we order lower quality parts to leave some amount of budget in case the design doesn’t work. (2) order higher quality parts which set up the project better for success, but leave little room for failure. In the case of failure in (2), additional costs beyond the initial prescribed budget may be necessary to complete the project.
Dr. Case indicated that she would want to pursue (2), as the study would still continue without the robotic brusher, but would be very disappointing to spend the money and not have a deliverable. Additionally, she indicated that an extra $200-300 on top of the 1600 would be within an acceptable range if problems with the project arose.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
April 14, Zoom meeting with David Gillett
Spoke about budget concerns and planning for failure. Suggestion was to speak with the sponsor. Addressed during sponsor meeting 4/17.
Additionally spoke with Steve and Stephen about modeling and simulating the system before ordering and assembling.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Ordering timeline, expect to have parts delivered on time, but this is always up in the air.
Resources or Information Required but not Available
N/A
Schedule
Order parts
Put an order in to have the exterior manufactured
Assemble arm support
Order motor and test it
Work on Proof of Concept Presentation
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
Added Funds: $500
Purchases:
Lab Jack - $71.09
TI LAUNCHXL-F28069M(Controller) & BOOSTXL-K350QVG-S1(Touchscreen) - $60.85
Remaining $1381.16
Progress on Report and Webpage
Webpage updated to include the Week 3 report
Completed Impact on Society and Professional Responsibility