I Turned an Old Keyboard into a Midi Controller

I turn a cheap, old, charity shop (thrift store) electronic keyboard piano into a cool midi controller. I added drum pads, including one that can be used as a kick drum, that operate on a different midi channel to the keyboard, so that I can play two instruments with the midi controller at the same time. I also added a joystick for pitch bend and control change midi messages.
Circuit diagram and code:
github.com/han...
The background music is:
Still Awake by Ghostrifter Official
/ ghostrifter-official
Creative Commons - Attribution-ShareAlike 3.0 Unported - CC BY-SA 3.0
Free Download / Stream: bit.ly/still-a...
Music promoted by Audio Library • Still Awake - Ghostrif...