New PCB!

One of the things on my to do at the 8/17 deadline was a new PCB design. My Previous PCB was just a breakout board for an Arduino Nano to make the connections easy. I wanted to create a dedicated SAB3T arduino compatible board. I based this design off the Sparkfun Arduino Pro Micro. I started by taking out some stuff I didn't need then added some headers and mounting holes. I went with the TQFP-44 package of the ATmega32u4 to make soldering easier. All the passives are 0603, also to ease soldering.

Thermoforming

I've continued my thermoforming experiments. This week I found some thing plastic that is sold in 2'x4' sheets to cover big florescent lights in drop ceilings. (I had bought it a while ago for a project.) Results were much better with this plastic than I've seen so far.

Still not as good as I'd like, but I might not have let the plastic get hot enough.