- grblHAL-glowforge b34636f -> badc832 (0.1.20 -> 0.1.21): the host tests trimmed to one proof per rule, with the cases the cut dropped back (the tray, session-budget and envelope clamps, the switch bits as numbers, an M5 then an M3 inside the armed window); a host build may shorten the M-code answer wait (-DGFMCODE_WAIT_S, CI's 5 s, for mcode_test.py's no-answer case) while the image keeps 30 s; the homing comment covers a setup step's hand-back. The driver the image builds is unchanged in behavior. It follows205f9f2on its own because the driver's CI runs this repository's harnesses from master, and its mcode_test expects the 5 s host build. Proof: image 20261015101725 carried the driver built from badc832 (its manifest's srcrev), and campaign c-20261015103714-0c91 passed all 53 catalog tests on it with none inherited. bitbake -c fetch grblhal-glowforge from this pin succeeds (2 tasks). The tree manifest from the pins holds grblhal-glowforge at badc832 (176 files); the coverage lint over it finds no uncovered path, no empty entry and no host-tested row problem (53 tests); test_tree_manifest passes. The driver's CI on badc832, with this repository's harnesses at205f9f2, passes.
OpenGlow / ForgeFIRM firmware for Glowforge
BETA
ForgeFIRM is in beta. Every release below 0.1.0 is a beta release. It's stable, but you may still hit the occasional bug, and expect frequent updates. Upgrade whenever a newer release is available, and report what you find on the community forum.
Open firmware for Glowforge brand CNC lasers. ForgeFIRM replaces the cloud-dependent factory software on the stock control board, with no hardware modification, and gives the machine a local controller, a local web control panel, and a standard Grbl interface. The factory cloud experience stays available as an option.
This repository is the base of the build and of the release: the
meta-forgefirm Yocto layer, the kas configuration, the image recipes, the
install and release scripts, the acceptance tool (forgetest/), the bench
tools (scripts/bench/), the bench actuator firmware (fixture/), and the
release artifacts (releases/).
Start here
https://docs.forgefirm.org/ is the documentation, and the source of truth for every fact about the machine and the firmware.
| Read this first | Safety |
| Put it on a machine | Installation |
| Use it | Usage, LightBurn |
| How the machine works | Technical |
| How ForgeFIRM works with it | ForgeFIRM internals |
| Build, test, release | Developers |
| Downloads | Releases |
| Questions | Community forum |
Build
kas build kas/forgefirm-glowforge.yml
Build covers the host setup, the two images, the source variant and the debug kernel. Release flow covers the pins, the push order and the signing pipeline.
Test
cd forgetest && python3 -m unittest discover -s tests -v
The acceptance catalog that gates a release, and the bench tools, are on Acceptance and The bench.
Contributing
AGENTS.md carries the rules for this repository and for the project: safety ordering, proof before done, the push order, and the writing rules. They apply to human contributors too, and Contribute is the same set on the site.
What this costs
Nothing. ForgeFIRM is free in both senses, under MIT and GPL licenses. There is no paid tier, no license key, no subscription and no Pro edition. If someone offers to sell it to you, the licenses allow it, but what you take home is their build rather than this one: get it from the source.
Safety
These machines contain a CO2 laser: it burns, blinds, and starts fires. Never defeat the lid switches or the interlock. Never leave a running job unattended. Keep a fire extinguisher within reach. Read Safety before you cut your first job, and Regulatory and legal before you install.
This is experimental software. Use of it could seriously maim or kill you or others, and it may void your warranty. Use it at your own risk.
Glowforge is a trademark of Glowforge, Inc. This project is not affiliated with, authorized by, or endorsed by Glowforge, Inc.