[Tim] sent us his Noise Box Synth. The box is a sixteen step synthesizer ... The hardware is simple; an Arduino, four potentiometers, four buttons, a switch, a speaker, and some LEDs.

[Gr4yhound] has been rocking out on his recently completed synth ... an Arduino, some harvested drum pads, and some ribbon potentiometers. The video below shows that not only does it sound ...

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 ...