Weird and wonderful: the best instruments - The Keys

Catarina Mota's Piano Box 12-note paper synth was created when looking to improve on the Resistor JelTone polyphonic food-based instrument. Removing the lid of the box allows the speaker-packing sides to lay flat against the table, the front drops to reveal a paper keyboard and the back stays upright to support the built-in LED light show.

 

 

The piano box is a (somewhat polyphonic) paper toy synthesizer with 12 keys, each triggering a tone and an LED. The keys are a set of capacitive sensors, made of copper tape, controlled by an Arduino Mega running the CapSense and Tone libraries.