DIY Teensy-based Polyphonic Synth by Florian Loretan

Published on Apr 20, 2016 Florian Loretan

"Here’s a quick demo of a project in progress.

A while ago, I bought an old bontempi keyboard on ebay for €3.50, but it stopped working shortly after I got it. My original plan to simply replace the defective sound chip was ditched for a fully custom enclosure with its own interface - the only thing remaining from the original are the keys. The sound generation is done with a teensy and the fantastic teensy audio board.

There is still functionality to be programmed (arpeggiator, presets, sampler among others), but the hardware part is done, and enough is there for the synth to be really fun to play. A more detailed walk-through might come later."

Building a custom synth enclosure

Published on Aug 12, 2016

"This is a follow-up on the demo of the synth, this time covering how I built the custom enclosure."

DIY Teensy Synth: the Electronics

Published on Sep 15, 2016

"In this follow up video, I talk about the electronics part of my Teensy-based Synth. Note that I'm using the Teensy Audio adaptor to generate the audio, so all the electronics is only about control signals, no audio processing, which simplifies things quite a bit."