Chroma Cauldron - Mainbow v1

Video Synthesizer

Mainbow is a Eurorack video synth module consisting of four function generators and a wavefolding NTSC/PAL video encoder. Hue, saturation, luminance, alpha colour space. Alpha represents transparency over an external video signal. All signalling is LZX compatible 0-1v. It also contains glitch effects and filters for producing music responsive patterns.

Each function generator can produce seven waveforms with phase, frequency, amplitude, and mix modulation. Elaborate patterns emerge when they modulate each other. Function generators output a monochrome video signal in addition to a 0-1v signal.

The module is sold as a DIY kit containing faceplate, circuit board, and components. It uses nothing but large easy-to-solder thru-hole parts.

Owner's manual: github.com/RussellKramer/Mainbow/raw/main/OwnersManual.pdf