2024-01-12 (F) Weekly Summary

I changed my prototype designs to simplify soldering without needing an axle or bearing in the middle. I found a video that suggested scoring the board and snapping it instead of drilling. I also modified my curved rhombus design to create a coil-dense circle that should work well for testing.
Second revision of motor coils

I tried a new technique for creating circuit boards using pre-sensitized boards, baby oil, and UV light. I attempted to process PCB motors quickly but had mixed results due to underexposure and overexposure. I need to make the traces thicker and improve UV light dispersion.
Too faint to etch

I tried etching a copper plate with ferric chloride acid, but the results were disappointing. I suspect the issues were due to scratches on the etch resist and thick traces. The resistance was lower than desired, showing only 1 Ohm instead of the expected 10 Ohms.
Poor etching

I found an open-source program that could convert my designs into millable G-code I could cut with a CNC router. With some revisions in KiCAD, I created a usable design with vias at the spiral tips and my winding spirals.
Legitimate PCB software

I exported Gerber files from KiCAD and imported them to FlatCAM. I made a mistake in recording the tooltip size, but corrected it later. The routing program cooperated in exporting G-Code, but I need to account for tool width from now on.
Circuit converted for milling

My smallest routing bits sizes were 0.8mm and 1.0mm diameters. I partially removed the outer winding and moved one via from the motor hub to the rim to make the motor over 70mm wide. The second hubward via connects a second layer and is mirrored from the first.
Wide gaps between traces

The rest of the summary posts have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10

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