Jar ‘O’ 40106 (2022)

The Jar ‘O’ 40106 is a two oscillator light-responsive synthesizer.

It’s built with a CD40106BE chip (Hex Schmidtt Trigger) from a college class and photoresistors I’ve had sitting in a drawer for over a decade! Capacitors were chosen to bring the oscillators down to the “doom” range.

The circuit design is based on Bob Drake’s 40106 oscillator page.