I am trying to make a simple electronic instrument with 12 touch switches as the keys.
Basically I want each switch to insert a different resistor into the circuit to change thr frequency of a 555 oscillator. The output of this will be sent to a 386 audio amplifier.
I've read into Darlington pairs as a possibility, but I'm confused on how to wire them so that when one is pressed, the resistance is changed, and when none are pressed, no sound is made at all.
Any suggestions?
Basically I want each switch to insert a different resistor into the circuit to change thr frequency of a 555 oscillator. The output of this will be sent to a 386 audio amplifier.
I've read into Darlington pairs as a possibility, but I'm confused on how to wire them so that when one is pressed, the resistance is changed, and when none are pressed, no sound is made at all.
Any suggestions?