Synthesizers make sound using electricity, usually with controls that let you change their sound. Some controls change just one specific aspect of the sound, while others, like the box above ...

See for instance the Mellotron, or this relatively easy DIY alternative, [Rich Bernett]’s Cassettone cassette player synth. The Cassettone works by substituting the trim pot that controls the ...

[Whisker] added a single potentiometer which controls all 8 of the monostable oscillators at once. Tweaking this knob gives the synth that classic Atari Punk Console sound we’ve all come to know ...