ScottW514 b29bb9e023 bench: the controller port and manual home harnesses
Two host harnesses for the grblHAL driver's null-sink build, in the bench
registry and the README with the others. The driver's CI runs them.

ctlport_test.py drives the controller port beside a scripted Grbl sender
that counts every ok and error it is sent, which is the only way to see a
status routed to the wrong source. 13 cases: the socket's mode; a port
jog's status going to the port with the sender's count exact and the jog
run whole under the sender's '?' polls; a port error the sender's next line
does not inherit; the sender's line canceling a fast port jog and drawing
its own ok (fast on purpose: a slow jog stops at once and would pass with no
hold at all); a sender line queued right behind the port's; the refusals;
one client, and five reconnects right after a close; the status hook across
a soft reset; the dead-man; a CR LF sender; a sender that polls the way
LightBurn does, '?' with an end of line behind it, LF and CR LF (every port
jog accepted, a 60 mm port jog run whole with the polls landing inside it,
one ok per poll, a real line still canceling a port jog); and every
operation of both sets under an open armed window with M3 modal and S500,
where the dump must hold no FIRE tick.

manual_home_test.py reads the stream dump (GFSINK_DUMP) and the attribute
log (GFSINK_ATTR_LOG), so it can say that nothing was shipped and which
current was written, and how many times. 9 cases: a manual $H ships no step
and no FIRE tick and declares the offsets with the soft limits on and Z
kept; $H refused in a cycle; $MD refused under an open armed window with
nothing written; every motion source and $X refused while released; each
energize written exactly once; the port's panel operations; both pairs of
home offsets, alone and at once; and a controller killed under a release,
whose replacement writes only 0 and 0.

Both pass against the driver's extensions tree. The poll cases fail against
the driver without its empty-line rule ("8 of 8 port jogs were refused under
a status poll"), which is the defect they were written from: it was found
on the bench reference with LightBurn connected, and the sender these
harnesses had until then polled a bare '?'.
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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.

S
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OpenGlow/ForgeFIRM Firmware for Glowforge
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