To be able to play a bit on the synthesiser, I made a simple keyboard out of some old scrap I had in the junk bin. The construction is very simple: a potentiometer as voltage divider between rail and ground and a push button between output and wiper. Each button is tuned with the potentiometer and output is connected to the VCO. I made a full octave, starting with C, which gives 12 buttons and 12 potentiometers. Its was a bit boring to assemble, but works great.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoDv5nsWM6NgCU54Cw9sKRyh1bFlTF0CTyY9ljRKaMtyMvUhZ9jafdAVXzxXeKyHHkXSaGO3OPKOF4jppF6dtioHFVGRw8S6hSNZGj1ALb-0CxuWbDkiU9Fd_M4mfSFNjcNiB-KDPsiKV0/s400/2013-09-02+19.46.24.jpg) |
VCO keyboard |
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