Arduino Piano Tuner Is Pitch Perfect. 16 Comments ... we’ve seen an old piano hacked for ragtime and if you decide you are giving up on piano lessons, you can always convert your instrument into ...

The Pressure Piano is a three-key piano consisting of the notes G, A, and B that play off of a buzzer when activated. Each key is made of Velostat, aluminum foil, and two jumper wires. While making ...