Raspberry Pi Pico

The tiny Raspberry Pi Pico module is based on the Raspberry Pi Foundation's own 133MHz dual-core Arm Cortex-M0+ based RP2040 SoC, plus 264KB RAM and 2MB flash. The module offers USB, UART, SPI, I2C, PWM, GPIO, and ADC I/O, and operates from -20 to 85 deg. C.