I've build the Gijs Gieskes 3TrinsRGB from kit. It's a great device!!
Because I didn't like the small original patchbay, i have modded it to a new panel with banana sockets.
To expand this great videosynth, I've designed a PCB mostly based on a comparator schematic from Gijs and added voltage control over the bias.
You can find out more info about this project in the muffwiggler's thread:
3TrinsRGB-1C CV Comparator PCB Thread
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