scripts/bench/mcode_test.py drives the null-sink controller with the scripted sender and port client of ctlport_test.py: the port's mcodes table and its refusals, error:20 for a number nothing answers, an answered M-code's wait (the head still, the port's state naming it with its words, a port jog busy:mcode, stale and out-of-form answers refused, the answer's words on the console), a refusal and a timeout each holding the job, a soft reset ending the wait, and a wait under an open armed window with M3 S500 shipping no FIRE tick. It is registered in the bench registry as a CI harness, not a bench-page tool. exthost.mcode (suite/extmcode.py, its own module): a package with the reference id that asks for mcode:160 and job_time.run, the one granted, and whose service answers POST /mcode on its call socket. The host's status names it as the one that answers M160. A dark job (out 5 mm, M160 P1, back) through POST /job waits at the M-code with the port's state naming it and the head still over 1 s (the kernel's counters and the port's position), the service answering after 2 s; the job then ends done, every line acknowledged, the head back, the service asked once with the code and its words, no discharge. A job naming M161 fails at that line with error:20 and nothing moved. A job at M160 P2, which the service refuses, is held, and is aborted from there. A job left running by a failed check is aborted before the put-back. Proof: on the bench reference, with the controller, forgectrl, and forgeext of this change bind-mounted, exthost.mcode first FAILED and found the controller announcing the M-code before the kernel had played the last move (the driver now waits for the kernel to go idle), then PASS; exthost.service, motion.job, exthost.page-call, exthost.motion-jog, motion.port-jog, and exthost.package-routes PASS on the same daemons. mcode_test.py ALL PASS on the host build. forgetest's unit tests pass, and the coverage lint passes with --enforce.
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.