Maplin Function Generator (Oscillator)

YouTube via isotopeofme
"I bought and assembled this Maplin function generator, which is a 4 waveform DCO with basic pitch control. The kit comes with buttons to control the pitch, but I wanted to see if I could apply constant rather than stepped control to the pitch of the output. As you can see in the video, by bridging the pins that I put in rather than the buttons, you can effect a smooth change across the oscillator's range in both directions.

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These kits are amazing for beginning circuit bending. The sounds that you can eek out of this aren't that exciting in and of themselves, but combined with the "voice changer" (an LFO/pitch shifter/tremolo kit), and the crazy music generator (a primitive Theremin type kit) and a little ingenuity you can come up with some great circuit bending toys.

I plan to wire switches up to the pitch controls, on this one as well as a brush assembly to swipe across the IC pins to effect random change. Housed in a project box with the voice changer and a little bit of CV, I could have a useful effect box."