Here's a pedal built for a bassist who wanted a character from the original Fallout computer game.

It's a combination of things, but at the core is my take on CJ's "Logan 5", which was derived from Tim Escobedo's "Thing Modulator", a pseudo ring modulator.

I've paired it with the LFO from the Shoot the Moon, which drives the frequency, and, as it's for a bassist, a clean blend of my own devising.
It's also got a pair of external LDRs, one to warp the frequency and the other is part of a feedback loop.

The etch was pretty tricky as, not only was the image pretty murky, it's an old game with pretty low-res graphics.

There's a flashing ultra-violet "eye" synced with the LFO.