40106 synth making workshop

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The 40106 synth is a four button, four potentiometer (adjustable) playable sythesizer. In this workshop participants build their own 40106 synth from a custom kit: soldering components together, learning about the 40106 hex Schmitt trigger, additive synthesis and the basics of a summing circuit (the circuit use in audio mixers). 

The attached PDF contains the circuit diagram, as well as information from the workshop, wiring guide and the PCB layout that can be used to create your own printed circuit board.