A keyboard that allows you to play music with capacitive touch inputs.
Arduino C
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Gram Piano

Gram Piano Kit
Gram Piano Kit (KIT-11835)

The Gram Piano is a capacitive touch keyboard and soldering kit that allows you to create and play all the notes of the C major scale and outputs sound through a PCB Speaker. A different octave can be selected with the potentiometer. Pressing the on board button will start/stop playing a melody. Feel free to adapt the keys to play other notes/scales/melodies or perform tasks as you see fit.

This board was created in Eagle v6.0.5, this firmware was created in Arduino v1.5.2

Repository Contents

  • /Firmware - Firmware the board ships with.
  • /Hardware - All Eagle design files (.brd, .sch, .STL)
  • /Production - Test bed files and production panel files

Version History

  • vH10 Initial Redboards.
  • vH05 Third protoboard run.
  • vH04 Second protoboard run.
  • vH03 First protoboard run.

License Information

The hardware is released under Creative Commons Share-alike 3.0.
All code is open source so please feel free to do anything you want with it under the Beerware license.