ScottW514
b2c42f0cc3
The post-run pass compared the kernel position counters exactly, so a test that put the head back within a hundredth of a millimeter failed whenever that distance did not round to the same step. motion.lid-cancel-home found it on the bench reference. The test cancels a job with the lid twice and the controller returns the head to the job start each time, landing 0.038 and 0.037 mm out - the same figures as the run before it, which passed. This time the two returns left four steps on X, 0.075 mm at 53.333 steps per mm, and the hand-back called it a leftover. Twenty-three runs of that test, all passing, on returns of the same accuracy: whether the residue rounds to zero is chance, not a property of the machine or of the test. A difference inside POSITION_DEADBAND_MM (0.1 mm, five steps at x8) on X and Y is now the quantization rather than a leftover. The head is still put back, so nothing accumulates over a campaign - only the failure goes. Z stays exact: the return never moves the lens, so a Z difference is still a leftover and still unrestorable. Host-proven: four new unit tests on the boundary (four steps and a moved Z on either side of it, and an unreadable reading), and the forgetest suite.
OpenGlow / ForgeFIRM firmware for Glowforge
BETA
ForgeFIRM is in beta. Every release below 0.1.0 is a beta release. Expect problems, 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.
This project is not affiliated with or endorsed by Glowforge.