DIY Synthesizer Projects:

DIY synthesizer builds, some may be for sale. Most of these include extensive videos on my YouTube channel R.O.T. Studios.

Click the images to go to the dedicated project pages.

HS EXPANDER

This exposes all 113 FM synth parameters in the Electone HS series of organs, through MIDI.

KORG POLY800 MKIII

A modern clone of the Poly800 mainboard to fix my corroded and broken one.

YAMAHA PS-3 MODDING

This Yamaha keyboard is very moddable and I've gone absolutely bonkers on it!

DRADIQUE V2.0 CASIO CZ CLONE

Sweet, sweet phase distortion heavily based on the Casio CZ series of synthesizers.

SYMPHONIQUE 1 STRING SYNTH

Quite cheap but effective solution to a digitally-controlled but otherwise analog strings synth.

SQK-01 PROTOTYPE

Rather crazy digital 2-operator FM synthesizer prototype, running on an Arduino Mega, with an analog resonant filter, analog envelope and distortion.

SQK-01 FM SYNTH

Repurposing a MIDI controller which surprisingly uses an Atmega48 MCU for the front panel, to create a gnarly FM synth with an Arduino Due.

ANALOG FM DRONE SYNTH

A 2-voice with 3-operator per voice, fully analog, FM synthesizer. Using the 40106 hex inverter!
Is great for wide noisy drones, industrial stuff and hard kicks.

REZZODRONE SYNTH

Very simple, but very effective and flexible resonant synthesizer with 3 voices. Great for changing soundscapes and percussion sounds.

DRUMIQUE DRUM SYNTH

Four fully analog drum sounds of my own design and flavour. Has a digital Arduino-powered 16-step sequencer and MIDI.

THE BLUE CLONE BACKING SYNTH

Analog drum machine (Boss DR-55 clone) and bass synthesizer in a pretty blue package.

THE SCIENCEORGAN

A combination of multiple DIY synths into a surprisingly amazing ambient drone and noise beast.