Using an Arduino, I'm trying to send a signal to a circuit (my problem) to turn on/off (or mute) the signal between the guitar and amplifier. I see that they sell instrument cables with the on/off switch built in, but I am trying to imitate the same thing but having the Arduino send the signal.
What I have in mind is to create a pcb board with two 1/4" mono female input jack plug socket (http://www.dhgate.com/new-1-4-mono-female-input-jack-plug-socket/p-ff808081386ef91501388e877a692ffc.html) and some kind of switch (digital?) to let the signal flow thru the circuit.
Question what kind of switch (never used a digital switch)? Sample code? Any better ideas? Spent most of the day doing research but I have hit a brick wall.