Behind that ubiquity is a protocol layer called HCI, or Host Controller Interface ... is here to show us that it can be done with an ESP32 microcontroller through its USB interface.

It’s also a pretty safe bet you’d end up running it on some variation of the Arduino sitting in a motor controller breakout ... into the host computer via USB to function, a rather quaint ...

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