ScottW514
68e9d3fb8e
Rule 19 names laser_arm_test.c case P as the proof of the dose curve's mapping. Case P calls curveComputeValue directly and reads its counts; it does not reach the wiring from the S word to the stream: spindleConfig installing the curve as the PWM compute hook, and the level the hook returns riding the dither into FIRE density. A driver that left the hook uninstalled passes case P and renders every cut through the identity mapping, a different delivered dose at every S. The rolloff reference session (rule 23) already runs one M4 line at S300 under the shipped curve and reads its cruise density, to compare against the two-cut run. It now also holds that density to the curve's own point: 30 percent light through the bench-default curve lands between its (45 percent density, 21 percent light) and (60, 37) points, 53.44 percent density, level 68 of 127, density 0.535, held to 0.02. The expectation is mirrored next to the curved configuration the way the floor is, so a change to the curve changes it. The header's rule 19 names the point. No session is added, and no session's configuration changes. Proof: the host test grblHAL-glowforge CI runs (the step "Laser stream emission rules", python3 forgefirm/scripts/bench/laser_stream_test.py build/grblHAL_glowforge) against the native null-sink build of the driver at badc832 (-DGFMCODE_WAIT_S=5.0): the rolloff reference cruise renders 0.5355 against the expected 0.5354, and the whole harness passes, every session. Negative control, through a scratch copy of the harness: the same cut with laser_dose_curve = off renders 0.3625 (the identity mapping, level 46 through the 10 percent floor), 0.17 from the point, and fails the assertion. Acceptance: none; the harness is grblHAL's CI's, and src/** of grblhal-glowforge keeps its covers.
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.