Power Cut Laser Software Page

Power dies. LightBurn disconnects. Ruida loses state. Upon reboot, the Ruida’s LCD shows "Origin?" but the head is in the middle of the bed. You manually re-home, ruining the job.

Introduction: The 100-millisecond nightmare power cut laser software

| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | "Power returns, but job says 'Position Lost'" | Controller battery backup dead | Replace CR2032 battery on Ruida/Trocen motherboard. | | "Resume works, but the engraving has a dark line at the restart point" | Laser tube cooled down; first pulse is stronger | Edit G-code to add a M4 (laser fire) with 10% power for 5ms before resuming. | | "Software doesn't detect power cut at all" | Your PSU capacitors hold voltage too long (smoothes the dropout) | Install a "brownout detector" module between mains and controller sense pin. | A power cut is not a matter of if , but when . For less than the price of replacing one burnt-out CO2 tube, you can configure the power cut laser software that is already sitting inside your laser’s controller. Power dies