Right out of the box, the Riffmaster takes after Rock Band's early controllers more than anything produced for Guitar Hero.

He played Frets on Fire — an open source clone of the game — on ... Instead of buying a controller he built his own hacked Guitar Hero controller from a scrapped keyboard and a toy guitar.

with an Adafruit Nunchucky breakout board allowing the Guitar Hero controller to be connected via jumper wires to the Raspberry Pi’s IO pins. Communication is via I2C, and is easy to work with ...