A digital theremin for my wife, Hannah.
- PJRC Teensy 4.0 microcontroller - This runs the show.
- 2x VL53L0X time-of-flight laser ranging sensor breakout - Senses the distance to the hands. One controls pitch, and the other controls volume.
- Adafruit I2S Stereo Decoder - UDA1334A Breakout - Converts the I2S digital audio data from the Teensy into an analog audio signal.
- 5V 3W stereo audio amplifier w/ volume control - Drives the speaker with the signal from the I2S decoder.
- 3W 4Ω speaker - Jiggles the air molecules.
- 5V 3A voltage regulator - Powers all this stuff, and allows the Hannamin to be powered by a standard 9V guitar pedal power supply.