DESCRIPTION:
A quick demo of my DIY Arduino String Synth and Drum machine. Sorry I can't play that well but whatever ;-)
Use the wayback machine to access these old sites and find the code;
https://archive.org/web/

All the code is from Jan Ostman;
http://blog.dspsynth.eu/how-to-build-a-string-synth/

http://blog.dspsynth.eu/the-o2-source-code/

I added an analog filter, you can read about the build process here;
http://bloghoskins.blogspot.de/2016/11/diy-arduino-string-synth.html

You can find a simplified schematic for the drum machine here;
http://bloghoskins.blogspot.co.uk/2016/12/update-arduino-drum-machine.html