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