I’m still alive, and so is the project!
Relayboard no. 1 is finally complete; this board, to remind any imaginary readers I may have, will electrically replace about half the keys on the top keyboard.
I wonder which species of bird is nesting on my sofa
For the non-electricians: a relay consists of an electromagnet and a little switch in a box, so that when the electromagnet is turned on, then so is the switch; and when the electromagnet is turned off, the switch is turned off. This is nice here, because I don’t trust the electronics inside the organ to be predictable – so I can control the “keys” (the “switch” side of the relay) via another circuit without actually passing any electricity between them. So far, so good.
I have now tested the control side of the board, and it more or less works; next up, testing the switch side of the board.