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PicoHAL GRBLHAL Plugin

This plugin adds support for connecting the PicoHAL board over Modbus to GRBLHAL. Preliminary code, both hardware and firmware are work-in-progress.

The PicoHAL has the following characteristics:

  • 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

Shield I/O:

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

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grblHAL plugin for picoHAL Modbus peripheral mode.

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  • C 98.6%
  • CMake 1.4%