Four catalog tests for the controller and daemon change of the same area, and one hand-back rule they needed. motion.release (takeover, 8 min): $MD takes the X and Y step currents to 0 with the 40 V rail untouched (no supply line in the kernel log, cnc/state idle, no fault), drops the X and Y reference, and locks the machine in alarm; a jog, a G0, $X, and $X after a soft reset are refused; forgectrl refuses a switch to cloud mode with 409; the kernel's position record is the witness that nothing was shipped, since the accelerometer cannot say "still" across a release (the rotors relax and the head feels it); $ME restores 33 and 5 with no fault; and the drivers are proven alive the way the machine proves it to itself, by the Setup motion check's liveness probe and witnessed jogs. homing.manual: a manual $H after an outbound jog plays no pulse byte, clears the counters, declares manual_home_x and _y, keeps Z, turns the soft limits on (error 15 behind the home), tells the client the home was set by hand, and reads back through forgectrl as source manual. motion.port-jog: with the suite connected as the Grbl client, POST /motion/jog moves the head by what was asked on the kernel's counters, the client is told and not displaced, and /motion/state agrees. The client then polls the way LightBurn does, '?' with an end of line behind it: no port jog may be refused for it, a 30 mm jog must run whole with at least three polls landing inside it, and every poll must draw its ok. The cancel stops a long jog short; the client's own line stops a fast one (100 mm at F6000, fast on purpose: a slow jog stops at once and would pass with no hold) and must draw ok, never an error; the 100 mm bound holds with nothing moved; the release and the energize go through their routes with the currents read; and the head is returned, in requests of 100 mm at most. laser.port-dark (live, one button press): a 20 mm line at M3 S400 with no M5 and no program end after it leaves the armed window open with M3 modal and S above zero, the state in which an injected G1 would fire. The line must be witnessed lit or the case proves nothing, the window must read armed before and after, and through three port jogs back over the line the LASER_ON sample count stays 0, the HV current stays idle, and the head's beam detector does not rise over its level before the jogs (its own pre-jog level, because it may still be settling after the cut). The hand-back. The baseline compares the kernel's step counters at the end of a run with the start. A manual home clears them by design, and homing.manual takes its home 30 mm out from where it began, so after the test's own correct return the counters read -6400: on the bench reference the baseline "returned" the head 30 mm the wrong way and failed a run whose body had passed. ctx.counters_rezeroed() now takes start_reads, what the counters read in the new frame with the head at its starting position; homing.manual passes the start minus the counters at the home. Without the argument it means what it meant: re-zeroed at the start. All four pass on the bench reference: motion.release (the rail untouched, every refusal, the 409, the probe and four witnessed jogs), homing.manual with offsets 12.5 and 8 (declared 12.502, 8.002, a clean hand-back expecting -6400), motion.port-jog (10.000 mm for 10; 8 of 8 accepted under the poll, 30.000 mm with 5 polls inside the jog, 14 polls and 14 oks; the cancel at 10.3 of 40; the client's line at 33 of 100 with ok; drift 0.000), and laser.port-dark (emission peak 148 on the line; 20 samples across the jogs with 0 emission, HV 0, beam rise 5). The unit suite passes (418). Coverage: motion.port-jog names forgectrl's src/grblport.*, src/main.c, and src/status.*; motion.release adds src/status.* and src/wizdark.*; laser.port-dark adds src/grblport.*; the driver's new sources fall under src/**, which every motion and laser test already names.
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.
Glowforge is a trademark of Glowforge, Inc. This project is not affiliated with, authorized by, or endorsed by Glowforge, Inc.