Yamaha YM2612 and YM3438 are fantastic FM chips which usage is widely documented. The only thing they need is a microcontroller to send the correct information to every register and set the different parameters of the FM synthesis. In this artwork this task is carried out by the omnipresent ATMega328p. The way the viewer interact with the artwork triggering the different events is through an IR thermometer MLX90614 that can be controlled with I2C

The ATMega328p is supported with two ICs 74hc595 and 74hc164 to increase the number of GPIO pins needed for the YM2612 (16 pins) and the 7 SMD LEDs.

The audio output is amplified thanks to the PAM8403 Class D amplifier reducing the power usage required.