Here is the completed great manual.  Soldering has much improved this time around.  You may notice a resistor soldered to the LED.  Ignore it, it is useless.  I need a bigger one.

One more to go, then I can start thinking about wiring them up to the MIDI modules.

Bit hard to work on this at the moment, as Mia has just died from cancer.  Went from limping a bit, to a terminal diagnosis, to dead, within 3 weeks.  A bit overwhelming, really.