No real progress the last few days.
There were a couple of hot days, a couple of warm days, and the last few days have been cool (around 20 degrees) with some rain, which is much more preferable.
As I am going back to work tomorrow (Monday), I was trying to get some last minute things done, which took up most of the time.
However planning has proceeded, and I wondered about soldering the headers onto my ProMicro, gathering some wires with 1x sockets on the end and soldering the bare end to the back of the DIN socket, and simply plugging the other end into the ProMicro headers.
That way the components would be reusable.
This may become relevant if I wanted to internalise the ProMicro, as I could simply use female-female jumper cables to connect the pins on the M122 controller board directly to the ProMicro.
On another note, I disconnected the DIP switch so I could wash the case, but now that I come to reconnect it I have discovered that there are more pins on the controller PCB than sockets on the DIP switch plug. A few searches proved fruitless. Does anyone know which side of the PCB plug the DIP switches are supposed to be connected to?