Playing back music files from USB sticks is a common feature these days, and is built-into the infotainment system in [Folkert van Heusden]’s Opel Astra. Unfortunately such USB playback features often ...

Raspberry Pi’s RP2040 chip is designed for dirt cheap microcontroller boards like the Raspberry Pi Pico, which sells for as little as $4. With a 133 MHz dual-core ARM Cortex-M0+ processor and 264KB of ...