GRBL Hot Wire Firmware and Software V2.51

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GRBL Hot Wire Firmware and Software V2.51

This is the latest software and firmware for the CNC Foam Cutter version v2.51, uploaded April 2026

Requirements

  • Windows 10 or 11. Older Windows versions may work, but have not been tested.

  • The Windows software requires a minimum screen resolution of 1920x1080

What’s New in v6.51:

  • Fixed an issue with exit dialogue appearing twice.

  • Added awarning if the wrong firmware is detected. e.g only 3 axis are found.

  • Code review to prevent any unhandled exceptions. Should be more robust now.

  • Changed Jog both Carriages to display arrows for better international users.

  • Bug fixes

Full details here https://rckeith.co.uk/grbl-hotwire-for-cnc-foam-cutters/

Files

  • Software

    • Grbl Hot Wire - grblHotwire6.51.zip

  • Configuration file for MKS Tinybee

    • config.yaml

  • Firmware

    • XLoaderXYZA-Mega2560.zip - Arduino Mega2560 with RAMPS 1.4, MKS Gen L V1.0 and V2.0 and V2.1

    • The A-axis Min Limit Pin is D49. See https://rckeith.co.uk/grbl-hotwire-mega-5x-for-cnc-foam-cutters/#soft-and-hard-limits

  • BTT SKR Pico V1.0