ScottW514
80ddd53bcd
check_fire_gaps counted consecutive stepless ticks carrying FIRE and reset on any dark tick: the analog rendering of a fire state leaked into a cycle's idle pad (stepper_stream.c gf_stream_go_idle names it: a stationary dwell burn at every planner starve). Under the density model every tick goes through the dither mask, so the same leaked state renders as bursts of at most one period (80 ticks at S800) split by dark ticks, and the run never reaches the limit. With the analog churn session gone, density-churn was the only session on rule 9, and it could not see the leak it was there for. The check now reads rule 8 both ways: the run of lit stepless ticks as before, and for every FIRE tick its distance from the nearest step on either side, the one before it and the one after it. A cut's first FIRE tick leads its first step by the accel-from-rest interval (412 ticks at x32) and its last trails its last step by less, both inside the limit (1000); a FIRE tick with no step that near on either side is in a gap, and lit, however the dither spaced it. The distance is read from both sides because a stream opens dark on its lead-in pad and a cycle opens lit before its first step: depth into a stepless run alone flagged the m4 session's first lit tick, 22529 ticks of dark pad after the stream start and a few hundred before the first step. Proof: on synthetic streams, a legitimate 2253-tick dark gap between two cuts passes both readings; a continuous analog leak across it fails both; the same gap carrying a dithered leak at S800 (64 of 80 ticks lit) and at S200 (16 of 80) passed the old reading and fails the new. The whole harness passes against the native null-sink build (-DGFMCODE_WAIT_S=5.0), every session. Acceptance: none; the harness is grblHAL's CI's, and src/** of grblhal-glowforge keeps its covers.
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.