Reply To: Image2Gcode – Free Raster Image Laser Engraving Software – Modified for MPCNC

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#10622

Leo69
Participant

The entries you make in this section are dependent on the GCODE commands that you use to trigger the laser. The information that’s really needed is the firmware that you’re using. Most likely you have one of the configurations below so post back if you have a different set-up.

GRBL-If using GRBL firmware then your laser is likely connected to the spindle on/off pins so you’re settings will be :
Laser Power Command : Choose ‘Use S Param’ option
Laser Power On MCODE: Choose ‘M03 S’ option
Laser Power Off MCODE: Choose ‘M05’ option
GRBL uses 8 bit PWM resolution so in the ‘Laser Profile’ tab you should enter 255 for MAX value.

Marlin- If using Marlin firmware then your laser is likely connected to the fan on/off pins so you’re settings will be :
Laser Power Command : Choose ‘Use S Param’ option
Laser Power On MCODE: Choose ‘M106 S’ option
Laser Power Off MCODE: Choose ‘M107’ option
Marlin uses 8 bit PWM resolution so in the ‘Laser Profile’ tab you should enter 255 for MAX value.

You have a fairly high-powered diode so if your engravings are coming out to dark you can try increasing the feed rate first. If increasing the feed rate doesn’t work then try lowering the MAX power value in the ‘Laser Profile’ tab a bit. Keep in mind that your grayscale resolution will be compromised if you lower the MAX power value too much. Let us know if you have any questions….