It occurred to me just a little while ago that an end user might want to have synchronized lights or some other effect with the voice, so I've connected the mike input at the FV-1 to the one remaining port on the MAX11312. Maybe it should go to one of the speaker output ports; I'm not sure. I may change to that later, especially if someone speaks up.

Also, I removed the extra output connections besides the TRRS jack. Using just one or the other port is a more likely thing for the SPS2. Before I finalize this version of the project, I may bring the right-angle headers back, or put bare-wire terminals in their place.

This is in addition to the rerouting of leads to make wiring more efficient.

I'm also considering a row of connections to allow a user to put in jumpers, connecting the FV-1's input and output directly to the analog I/O -- but not yet.