When you’re debugging a board which has an ESP32, Raspberry Pi ... A resistor and an LED will often suffice. Powering the LED means one thing and not powering it means another.

The ESP32 has USB capabilities built in ... the dev board can receive and run programs is blinking an LED. Building the circuit on a breadboard shows that this minimalist design works, but ...

That said, the ESP32 server has its uses. For instance, you can attach the microcontroller to a breadboard and some LEDs, and ...