ScottW514 d58ee39086 Hand lid_policy back unset where the machine had it unset
motion.lid-policy-hold read the setting as

    was = (fc.settings() or {}).get("lid_policy") or "cancel"

and wrote `was` back at the end. On a machine that has never set the
policy the setting reads as the empty string and behaves as cancel, so
the `or` turned "unset" into the word and the test handed the machine
back carrying a setting it did not arrive with. The hand-back reported
it, restored it, and failed the test.

The value is now captured exactly, empty included, and restored as
captured; the default belongs to reading the value, never to writing it
back. The read-back check gets the same default, so it no longer compares
None with the empty string. lid_policy_in_force carries the effective
policy into the evidence, which is what the old expression was reaching
for.

Found on the bench reference, on the run after the position dead band let
motion.lid-cancel-home through. The four other places in the suite that
read a setting with `or` are safe: two default to the empty string, which
is what unset is, and two feed a check rather than a restore. The shared
Restore helper captures raw values and writes the empty string back for
unset, as this now does.

Only this test's earlier passes are invalidated: the change is inside its
own body, and the per-test source hash of the other eleven motion tests
is unchanged (checked against the file before the edit).
2026-09-10 10:13:16 -04:00
2026-09-08 16:21:37 -04:00
2026-09-08 16:21:37 -04:00
2026-09-08 16:21:37 -04:00
2020-04-15 17:09:41 -04:00
2026-09-09 07:01:15 -04:00

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.

This project is not affiliated with or endorsed by Glowforge.

S
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OpenGlow/ForgeFIRM Firmware for Glowforge
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