
This has a Catalinbread RAH infront of the FV-1 as a Pre-Amp
Pre-Amp knob is just a DPDT rotary 2 position switch to turn the RAH on or off
I etched the RAH from effectslayouts
Display uses an Arduino nano, both fixed to an etched board
with a 16 position rotary switch to select 16 algorithms from 2 eprom's
Square hole was just drilled and filed, the trick is to open the hole with a file gradually
I.e. keep away from the edge until the last minute!
Paint is champagne metallic from Wilco U.K.
Text is plastisol screen printed
Both baked in an oven at 160c for 15 minutes
I made the FV-1 board in Eagle, it doesn't need the crystal if using the clock circuit and vice versa
FV-1 Eagle files, Arduino code:
https://www.dropbox.com/s/y171s6ltfl4jnyp/Graviton.zip?dl=0