Week 13

What was accomplished?

Goal: Finish testing and continue manufacturing the final product
- Allison:
  - Updating tracing and pads for PCB CNCing phase
- Samantha:
  - Create a small CNC-ed head model for marketing
  - Add the team/project logo onto the pcb design
- Claire:
  - Figure out how to hook up Vref to the rest of the PCB
  - Finishing MATLAB testing
  - CNC the head model
Team accomplishment:
- Samantha: Created the PCB shape, caught up on team documentation, and helped w/ manufacturing the head (cutting / measuring the material, helping with the first prototype assembly)
- Allison: Finished editing the final PCB: Rerouting, add pads, etc, generated Gcode for CNCing
- Claire: Created a fully assembled inter-locking head model to test the Fusion360 Slicer and Glowforge laser cutter

W13-Weekly Report

Head Marketing Display

Designer: Claire in Fusion360 & Fusion360 Slicer
Assembly & Manufacturing: Claire / Mr. Rojas in Auto CAD, Gloforge

Goal:

Claire will download the models and slice them at home, and have a fully functioning head model by the end of the week (this is for in-class work; out-of-class work will be dedicated to MATLAB and testing still)

What was actually accomplished?

Mr. Rojas already has the software downloaded on his computer and sliced the model for us
Mr. Rojas and Claire spent 3rd period assembling the interlocking head model
- Mr. Rojas calculate the exact scale factor to proportion the interlocking mechanism
- Claire utilized Auto CAD to make specific files for laser-cutting
- Experimented with different material, sizes, and possible designs

Problems Run Into:

The head model used is not the one that Claire found last week, the head model is the given one in the Slicer. Certain points are quite thin and when laser-cut, they end up snapping sooner or later
The material used emits a burned, chemical-like smell and is quite fragile when put under presssure
- Many of the interlocking ridges snapped or broke during assembly due to pressure being applied to overcome the friction

Goal for next week

Create our own design to fit the PCB and make a prototype

Final Prototype w/ proper scaling

Final files that were sent to the laser-cutter

20260326_101508.mp4

Third Prototype

Reusing foam boards for laser cutting the properly scaled files that were given by Mr. Rojas, the second prototype was assembled
Due to the mix up of part numbers on the files, and certain parts breaking prematurely, the team started over in assembling the prototype
Points of weakness were identified during this phase and mastering how to take the files in Auto CAD to gloforge or PDF form was also accomplished.

Second Prototype

Mr. Rojas manufactured these test pieces for his scaling calculations and helped the team determine how to properly laser cut and scale the model

First Prototype

With the basic files in hand, Mr. Rojas showed the team how to laser cut the files on simple cardboard sheets
The problem in this prototype was the thickness of the material, it didn't match the gaps for the interlocking mechanism and thus, this failed during the assembly phase

PCB Design - Physical

Lead: Allison

Progress:
- adjusted circuit
  - shifted into 1st quadrant of grid for easier CNCing
  - completed final trace adjustments
Plan for next week:
- begin CNCing final PCB design

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