I’m still working on the design reviews – I hopefully will be done by Monday or so. Found an interesting less than obvious feature a couple of days ago. Take a close look at this image.

Do you see something unusual?

If you don’t see it, look again. Two of the traces are just slightly thicker than the others. At first when I was working on this project, I thought the variation was just some random variation. The reality is that those extra wide traces are carrying +12 volts and -!2 volts power around the board and are made intentionally wider than signal traces.