Watch

The watch firmware now has a basic digital display and a crude analog display.

The display also has a display of battery voltage. The idle loop is now driven by timer 1 in the PIC, which runs from a 32kHz crystal. It keeps pretty good time and also, with a 2s wakeup time should give a reasonable battery life.

The PCB layout was originally going to be a single sided board, but I found it wasn't really practical, and also had problems printing it on my printer so I've decided to do a double sided PCB and have it made elsewhere on the planet.

The layout was pretty simple, we'll see how good it was when the boards come back.