MPCNC Grbl_ESP32 Controller

This is a CNC controller specially designed to address the needs of the MPCNC (Mostly Printed CNC) CNC Router.

Features

• ESP32 Microcontroller:
  • Very Fast: Dual core 32 bit, 240 MHz
  • Large Flash Memory
  • Wifi:
  • Bluetooth:
• Grbl_ESP32 Firmware:
  • Compatible with most existing Grbl gcode sender software.
  • Web User Interface
  • Multiple Interfaces
  • USB Serial:
  • Web User Interface:
  • Telnet:
  • Bluetooth:
  • SD Card:
• (5) Stepper Motor Drivers: On for each motor in the MPCNC design. Motors are ganging in firmware and have an auto squaring feature executed during homing.
• Limit Switch Connectors:
• Control Pins:
• Spindle Control:
• Fan Power:
• Micro SD card:

Getting One

They are available at the following links or you can source it yourself.

• Tindie

Usage Instructions

See the wiki

License

Creative Commons Attribution - ShareAlike 4.0 International

There are no commercial restrictions on using this design, but you must attribute the design to Bart Dring or @buildlog. You must also publish any changes or improvements to the design with the same open source license.

Version History

• Version 1.1 Original upload
• Version 1.2
  • Removed R/C filters on limit switches. This was not working for everyone. A firmware debouncing feature was added.
  • Made GPIO2 and output. Some dev modules have trouble with this as an input. Shuffled a few pins to accomodate this change.
• Version 1.2.1
  • Changed orientation of relay for better layout
  • Removed pull down resistor on spindle PWM circuit (it was never installed previously)
  • Note: This uses the same cpu_map ans V1.2

Source Files

• Firmware
• DipTrace Source
• Gerber Files
• Schematic

Donation

This project requires a lot of work and often expensive items for testing. Please consider a safe, secure and highly appreciated donation via the PayPal link below.