[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Arduino ...
Arduino has launched the Nano ESP32 development board powered by Espressif’s ESP32-S3 Wi-Fi and Bluetooth capable 32-bit microcontroller. The tiny 3.3-V development board supports both Micropython and ...