This is designed to work with the PicoHAL GRBLHAL plugin but the events could be sent by any Modbus host like LinuxCNC or similar.
https://github.com/Expatria-Technologies/Plugins_picoHAL
Copied from above:
- RP2040 MCU
- W5500 Ethernet module
- Familiar Arduino Uno inspired form factor
- RS485 input and pass-through
- 5-24V power input (can be USB powered)
- Works with CNC shield
- Works with Relay shield
- Works with stackable relay shields
Arduino I/O connected to similar function RP2040 pins.
In addition, there are plug headers for the following:
- Two buffered 5V output signals for Neopixels or other I/O