LondonUnited Kingdom N17 6YG
March 19, 2014
It is a monosynth called The Atmegatron and was officially launched in March 2014. The source code is open source, can be tweaked in the Arduino software and then uploaded to the Atmegatron using an FTDI cable.
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I would be delighted to demonstrate the Atmegatron at an event.
I have been using Arduino for a number of years and started a project a year ago to create an Arduino based synthesizer.