Mini Gerbil debugging – Laser operation

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Symptom DetailLikely causes and their solutions (in recommended sequence)
Laser stuck onLO (Laser Enable) connection is not properly connected

The $ settings have been changed. For a K40 laser, use the default values shown in the link

The PWM wire connection is not properly connected

Address grounding problems , see
https://awesome.tech/k40-laser-grounding-instructions/
Laser stuck offPress ‘test’ button on laser power supply, to confirm that laser tube is operating.

Check use of laser software.  For example, Lightburn has multiple settings required to actually send laser output.  Confirm the Mini Gerbil’s blue LED is illuminated, showing that it is outputting the Laser On signal.

The $ settings have been changed. For a K40 laser, use the default values shown in the link

Laser enable (LO) miswiring.  Check in particular the large plug from the K40 is fully pushed into Mini Gerbil (zero gap).

Check sufficient laser power.  Laser tubes have a minimum power threshold to operate.  This may change as the laser ages.  Increase the laser strength output in Lightburn.

Address grounding problems see https://awesome.tech/k40-laser-grounding-instructions/
Laser strength different to desired.  K40 front panel does not affect laser strength.As designed.  Set laser strength from your software (eg. Lightburn) because the front panel control is no longer operational when Mini Gerbil is installed
Laser strength differs from experience with previous controllerThe effect of the laser is a result of many different factors, including the design of controller electronics, so results will differ between controllers.  The good news is that with the right know how you can get great results.  See https://awesome.tech/k40-laser-best-possible-engravings/

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