Take the ESP32-CAM, a board that started appearing on the market in early 2019. On paper, the thing is amazing: an ESP32 with support for a camera and an SD card, all for less than $10.

The board can work with either 12 V or 24 V bus ... plus a couple of buttons and LEDs. All of the ESP32 GPIO pins are terminated on a GPIO header, with jumper options to disable terminations ...

Bart Dring's 6x CNC Controller is an ESP32-powered, FluidNC-compatible CNC controller board with support for 6 external ...