Hi everybody.
I'm in the planning stages of a project that will eventually turn an old coffee table into a step sequencer. Right now, I'm using the CapSense library, an Arduino Uno board, some copper/resistors/caps/etc. to make some capacitive buttons. I've gotten this to work, but only with 2 buttons. Scaling this to work with a larger number of buttons seems to be a problem, because the uno doesn't have nearly enough inputs to accomodate the number of buttons I'll eventually need (ideally 48, for a 6 x 8 configuration). I've heard of using multiplexers to increase the number of i/o ports on the arduino, but I really have no idea if/how it will work with capsense. If I could get some feedback and advice on my approach here, I would be very thankful.