ScottW514
b7dd23d539
forgectrl's start at the end of a takeover is a controller start, which
re-zeroes the step counters wherever the head then stands. After it a
head left out reads as home, so the baseline's position check after the
run could not see a head a test left out before its takeover.
setup.check-envelope did exactly that on 2026-09-23 and passed (fixed by
56af6ea).
The takeover now judges the head at the two moments it can, and moves
nothing: as the controller goes away, against the position the run's
baseline expects (when the counters are still in the frame the run began
in), and as the takeover ends, before forgectrl comes back, against where
it found the head (when the microstep mode has not changed under it). A
miss past the dead band is recorded on the run's baseline capture, and
the post pass turns it into an unrestorable leftover ("a controller
restart re-zeroed the counters there, so the head is not moved"), which
fails the run. A frame the test did not declare, cloud mode (its counters
are the cloud client's), a bench tool without a run, and a reading that
fails are not judged and never keep forgectrl down. ctx.counters_rezeroed()
now records the frame in force, so a takeover after a declared re-zero
can still judge.
The frame is read before the controller is stopped: forgectrl unlinks
/run/grblhal.homed when the controller exits (super.c), which the
bench's negative control found.
Proof: tests/test_takeover_position.py, 12 cases against a fake sysfs
tree and a fake anchor file (a head in place, a head left out at the
start, the frame read before the stop, the dead band, an undeclared
frame, cloud mode, a bench tool, a head left out by a drill at the end,
a changed microstep mode, the post pass failing the run and moving
nothing, a failed reading, a declared re-zero). forgetest's unit tests
pass on the host (474 OK, 4 skipped). On the bench reference, image
20260923232513 with the files bind-mounted: the old bedsize.py (56af6ea^)
fails as it must, "position at the takeover start=[2134, 2133, 0]
(expected [0, 0, 0])"; then 18 unattended tests that take over the
controller PASS in sequence (setup.check-envelope, kernel.k1-k2,
kernel.deadman-close, kernel.backtrack-bounds, kernel.fire-line,
kernel.resume-lead, setup.gate-blocks-controllers,
setup.advisories-rehash, setup.extensions-consent, setup.what-changed,
setup.mirror, setup.account-login, setup.first-run-flow,
exthost.service, exthost.events, exthost.hold-pause-tier,
exthost.motion-job, exthost.motion-jog). A second takeover in one run meets the frame the
first one's restart made, which no test declared, so its start is logged
and not judged.
Acceptance: forgetest is the dev-only harness, outside the catalog's
coverage; no test's fingerprint moves (runner.py and baseline.py are not
suite modules).
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.