Great way to make art with your food. :P
Originally posted on MAKE:
For the ITP classes Tech Crafts and Materials and Building Strategies, Scott Garner created the BeetBox, a tuber-based electronic drum machine. The instrument uses six beets connected to capacitive sensors to play samples on a Raspberry Pi. Here are the full details on the internals:
Touch sensing is handled by an MPR121 Capacitive Touch Sensor from SparkFun, for which I ported existing Arduino code to Python. This board communicates with a Python script on a Raspberry Pi via I2C. The script watches for new touches and triggers drum samples using pygame. Audio from the Pi’s line out is run through a small amplifier I built using an LM386, which is based on a circuit from Eric Rosenthal‘s Basic Analog Circuits class. The amp is connected to a salvaged speaker mounted under the holes in the lid.
Scott also built the enclosure himself:
The enclosure was created from .5″x8″ poplar…
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