A PCB for ESP32 GRBL : [project on Github](https://github.com/bdring/Grbl_Esp32) Replaces the cheap ATMEGA32 based boards found on small chinese CNC machines, often refered to as "Woodpecker" boards and adds an ESP32 32 bit processor, so i named it Woodpecker32. Most SMD parts can be assembled by JLCPCBs assembly service. I Paid 50€ for 5 mostly assembled boards plus another 15€ for the parts that have to be hand soldered. Adding an ESP32 board you end up below 20€ per PCB, but you need to find 4 people to share the costs. Features : - Bluetooth, USB and Wifi for your mini CNC ! - 15-30V Input voltage - Stepper motors operate at input voltage level instead 12V - Stepper drivers logic voltage supply is 5V for better compatibility (level shifter to ESP32) - Dual MosFET motor driver for motors up to 150W - Optical isolation on all inputs (except door, but who has a door on a mini cnc :) ) - Step down converters for 5V and 12V Known Bugs : - R42,R46,R48 need to be ommited as some driver modules actualy have an active high reset. - Door input is pulled low instead of high