When looking through existing Arduino drum kit projects, [joekutz] noticed that most of them just used the microcontroller as an input for an existing MIDI device. That’s fine if you’re just ...

He built an example controller that uses an LED and photoresistor to alter the signal returning to the Arduino. Put your hand in front of the light and the sound changes.

So, you could say that sound design with synths simply hinges on how you manipulate those parameters. Now, armed with the basic sonic structure for any synth you own, you should be able to ...