Farm Synth started with my desire to resume building some projects I had
accomplished in my youth. About a year ago I developed a virtual synthesizer
builders kit in Unity3D during which time I learned more about sound, sound
manipulation and how interface with virtually mechanized switches knobs and
I ended up with a bunch of 3D synthesizer part models that I could simply
send to the 3D printer. This urged me to take another crack at building a
I'm retired now. Over 40 years a go I packed up the synth project which has
traveled with me all this time. I live on a farm now, slightly off grid. I
looked around, found an old board, some metal rails from old lamp holders
plus other odds and ends from the barn.
I've always been fairly adept at digital electronics but knew just the
basics about linear circuits. The internet being the great resource that it
is. And more importantly the people that contribute their ideas and
collaborations leaves no excuse to learn and share ideas. So it began
As a result of using old barn parts, a bit of new tech and collaborative
farming of information. Farm synth came to be.
Its been kind of a modular build process (not based on rack modular
standards). Each module is developed and tested on a breadboard mounted
inside the synth and the staged into production as 3D parts and circuit
boards are completed. Everything is wire warp except for a few components
that I got etched.
Currently Farm synth has a top octave generator that drives a frequency
divider for the 5 3D printed octave keyboard. Modules include multi filter,
4 channel multi phase LFO, spring reverb driver/recovery, 4 channel mixer,
adsr and envelope trigger/sequence controller. All the circuits except the
TOG and ADSR are my own designs.
Audio Samples found here