The x32 default landed in forgetest/baseline.py and the driver, but two callers still judged the machine at x8 and both failed on the host. forgetest/tests/test_baseline.py: setUp seeded the fake machine from the x8 FIXED_SYSFS literals while enforce() compares against fixed_sysfs() of the resolved mode, so x_mode, y_mode, step_freq and ramp_rate read as deviations on a clean machine - 23 failures across BaselineTests and TransientNotLeftoverTests. It seeds from fixed_sysfs() now, and the tick expectations come from it (DEFAULT_TICK) rather than a typed 28160. The xy_mode_of and ref_xy_mode unset/invalid cases expect 32, with an explicit "8" case added that had no coverage. Two reference_preconfig dumps taken on an x8 machine carry xy_microsteps = 8, because the markers are read at the reference's own mode. wait_configured wrote the static CONFIGURED_MARKERS where the function watches configured_markers() of the mode in force, and the held-controller jog typed 221 steps for "4.144 mm", which is 1.036 mm at x32; both derive from the mode now. 69 tests, all pass. scripts/bench/laser_stream_test.py: STEPS_PER_MM was the x8 53.333, so the X-peak check failed at 2133 steps against an expected 533. The whole harness now derives from XY_MICROSTEPS_BASE/DEFAULT the way glowforge.h and baseline.py do, which uncovered five more x8-only expectations behind the first: the machine tick, the fire-gap limit (it grows as sqrt(k), not k - a finer mode shortens the accel interval by sqrt(k) while speeding the tick by k), the rung split in fire_spans, the density period and minimum burst (laser_pulse_ticks is in x8 ticks and the stream scales it, so the config keeps the x8 numbers and the measured lengths scale), and the decel/hold budgets. Run against the null-sink build: all stream emission rules hold. xy_mode_test.py's docstring still described the no-key case as x8 while its own assertions had moved to x32. No behavior change and no acceptance-catalog consequence: these are test expectations and a bench harness, not image component sources. The coverage lint is unchanged at 0 uncovered paths.
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.