vb6hobbyst7 / grbl_esp32_tmc2130_plotter_controller

TMC2130 Pen / Laser Controller

This is a simple controller for a Pen Plotter that uses Grbl_ESP32 as the firmware and TMC2130 stepper motor drivers in SPI mode. There is a hobby servo connector for pen up/down control. The PWM signal (3.3V TTL) on that could also be used to control a laser module.

Features

• ESP32 Controller Socket
• SD Card Socket (under ESP32)
• (2) TMC2130 Stepper Driver Sockets (SPI Mode). Note: Non SPI drivers will not work.
• (2) Limit switch connectors
• Hobby Servo connector
• Strong 5V 3A power supply
• All the freaking awesome features of Grbl_ESP32

Firmware

The firmware used is Grbl_ESP32. There is a special branch that supports the TMC2130.

Open Source

• Schematic
• Gerber Files
• BOM
• Source files (DipTrace)

Version History

• V2
  • Moved X Limit Switch form GPIO 2 to 32. Works better on dev boards that have an LED on that pin.
  • The footprint for the stepper drivers no include the diag pins
  • Added jumpers to optional connect diag pins to limit pins
  • Grounded TMC2130 N/C pin to make it compatible with TMC5160 drivers. The capacitor size is probably not ideal for use with the full capacity of the TMC5160, but should work.
  • Added 5V output (fan connector)

Getting Started

• Wiki for this design
• Wiki for Grbl_ESP32
• Getting one. I have a few extra, just ask for one via this Issue.