USB

USB A and C multimeter

STM32 Arduino custom USB sketches

Blue Pill USB-attached PWM PC fans

STM32 Black Pill Arduino custom USB sketches

configured as HID gamepad

D1 UNO USB (serial) as HID game controller based on mi-360

CH340 USB chip can appear *only* as a COM port to Windows

Composite USB and Servo control using Arduino and ESP32-S2-Saola-1

TinyUSB for composite USB using Arduino and ESP32-S2-Saola-1