Custom PCB with RP2350. Mainly used for hexapods and driving 18x servo motors with 18x ADC feedback through multiplexer. The project uses mainly 0402 components for extra challenge.

Specs

CPU: RP2350B with debug pins
FLASH: W25Q16JVUXIQ_TR 16Mbit NOR quad SPI memory
OUTPUT: 18x PWM, 6x digital output (3 pin header), 2x LEDs, extra pins in header
INPUT: 18x ADC though a CD74HC4067 multiplexer
SENSORS: ICM-45686 IMU
SERIAL: SPI, I2C, USB, UART

Test code

The peripheral test code and example can be found in test_code.