ScottW514
bed46e961e
The dark stretch after the M5 runs on past the close, and three of its
judgments did not hold with it.
The read rule took the last sample served as the trail's last edge, and
sample() returns None for a request the daemon does not answer. So an
outage after the served close (one request that hangs to the client's
10 s timeout is enough) left a trail that ended at the close with no
gap, and the window that latches after the close was never read: the
test passed whole with a 30 ms fire at the end of the return rapid.
The sampling could also stop as early as about 1.8 s past the close,
and with a 0.9 s unread tail allowed, the last reading could come
before the latch of the window in flight: the review's tail model
(the kernel's ~1 s window latch, the sampler's GET timing, a fire just
before the close) finds 4 runs in 20000, 21 with a wider GET spread,
where that window goes unread and the judge passes.
The placement and the disarm timing searched the whole stretch. A
window that closed before the head was back (in the dwell at +20 mm
or on the return leg, up to about 2 s early) found the head back after
the close and passed "the rapid ran inside the dark stretch", with a
negative disarm time.
The rapid's sample count in the record ran past the close while its
span stopped at the close, so the record read about 8 Hz for a 5 Hz
loop.
sample_to_disarm moves from emission_witness to module level, ends two
windows and EMISSION_READ_GAP_S past the close, and returns the time
the sampling stopped beside the samples. read_gaps takes that time as
the trail's last edge (t_end), so a tail the daemon served none of is a
gap. rapid_place judges the placement over the armed part alone, up to
the first disarmed sample, and the disarm time must be 0 or more. The
rapid block counts its samples to the close and records how long the
sampling ran past it (sampled_past_close_s), and the log line says
both. The relit, HV and read judgments still cover the whole stretch.
The description says what is judged. tests/test_laser_dwell.py drops
relit(), a copy of the judge that no change to laser.py could fail.
Every change makes the judge stricter: no energy or motion path
changes.
Proof: tests/test_laser_dwell.py, the Unit tests step of
forgetest-ci.yml (python -B -m unittest discover -s tests), 13 tests OK
on Windows with python 3.14 and on Ubuntu 24.04 with python 3.12:
test_a_tail_the_daemon_never_served_fails (every sample served read,
then nothing for 2.9 s before the sampling stopped: gap 2.9 s, the rule
fails; served through, it holds),
test_the_sampling_runs_on_past_the_close_and_ends_where_it_stopped
(sample_to_disarm on a fake clock, the daemon serving the close and
nothing after it: the sampling ends at least 2.9 s past the close and
the rule fails), and
test_a_window_closed_before_the_head_is_back_does_not_place_the_rapid
(a close after the return places out, back and the close; a close in
the dwell at +20 mm leaves back None). test_cooling_suite.py (3) and
test_setup_burns.py (22) pass. Negative controls on scratch copies:
read_gaps without the end edge fails the first two cases; the end at
two windows fails the second; sample_to_disarm that returns the samples
alone errors in the second; rapid_place over the whole stretch fails
the third. emission_witness run whole on a fake clock with only its I/O
stubbed: a window closing 0.2, 1.0, 1.9 or 2.5 s before the head is
back fails the placement (the code before this change passed the first
three), and a normal close passes with 22 samples over 4.07 s to the
close in the record (32 before). Against a simulated daemon and kernel
latch with that 30 ms fire: an outage after the served close and one
request hung to the 10 s timeout fail the read rule (gaps 3.05 s and
10.32 s; both passed before); a tail served through with no fire
passes. In the review's tail model, the end edge alone and the longer
sampling alone each leave 0 of 20000 runs with the window in flight
unread and the judge passing, in both GET spreads. pyflakes reports no
undefined name.
Acceptance: laser.emission-witness's fingerprint moves (its own text
and laser.py's shared text), laser.armed-kill and
laser.pause-resume-lid-cancel move through the shared text, and
cooling.flow-under-load and cooling.fail-tier-stop move because they
import from .laser in their own functions; the other 38 do not move
(source_sha compared before and after). Against the campaign this
series already needs, that adds no run: 850498f moved all 43 once.
laser.emission-witness is always run, and the next campaign judges the
rapid with the end edge on the bench.
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.