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Tuomo writes –

This experiment is based on an example in Nicolas Collins’ book: “Handmade Electronic Music, The Art of Hardware Hacking”. The motivation for this experiment is to learn IC logic chips and to prepare inexpensive experiments for sound making electronics workshops. This is a first version, please be aware of possible errors. All corrections and contributions for improvement are highly appreciated.

Quad NAND Gate – synth, the Nandsynth –Link.