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.
- 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
The firmware used is Grbl_ESP32. There is a special branch that supports the TMC2130.
- Wiki for this design
- Wiki for Grbl_ESP32
- Getting one. I have a few extra, just ask for one via this Issue.