/* LITTLEBITS PING))) THEREMIN
This sketch reads a PING))) ultrasonic rangefinder and returns the
distance to the closest object in range. To do this, it sends a pulse
to the sensor to initiate a reading, then listens for a pulse
to return. The length of the returning pulse is proportional to
the distance of the object from the sensor.
* +V connection of the PING))) attached to +5V = PROTO bit IN left
* GND connection of the PING))) attached to ground = PROTO bit IN middle
* SIG connection of the PING))) attached to digital pin 1 = PROTO bit IN right
Arduino d1 <= Proto <= Ping)))
Arduino d0 <= Power
Arduino a1 <= Slide dimmer
Arduino d9 (analog) => Number => Oscillator => Synth Speaker
Experiment with more oscillators, filters, sequencer, other input sensors instead of the slider etc...!