Both variants of the hardware have now been completed and tested on a breadboard. The code which drives all of this stuff is also pretty much ready to go.

So it is all off to JLCPCB to get it manufactured. The down side is that it is the start of Chinese New Year which means it may take a little longer to get the boards back.

One other small thing the astute reader may have noticed is that there is no way of programming the microcontroller as I have omitted any sort of programming header on the board. This is actually a separate board that allows for programming the microcontroller and additionally plugs into the DIP-8 microcontroller socket to allow for both programming and debugging.