drjohn

Congratulations, there have been so many people wishing to get the Audio Guest Book project going and have had seemingly enormous amount of problems getting it to work. You have done it with very little problems. Well done.

Prior forum discussion including example code here.

Just found this one, after a lot of head-scratching. I've done PR#472 for it. The copy from the 16 incoming audio blocks to the output buffer was copying twice as much as it should have, so the second half (presumably garbage) was overwriting...

I've used analogue multiplexor chips (4051 8 input / 4067 16 input) to read multiple touch pads from one pin. It costs you the addressing pins and an enable pin but you can share those pins among a few multiplexor chips and read many capacitative...