OK that’s good. Still, that’s a line drawing with no grayscale so we don’t know for sure that you have 0-5V PWM on that output pin. Did you check it with a meter to confirm? If you have good PWM and your voltage reading is changing in proportion to fan speed setting then we need to look at the Gcode you’re producing with image2gcode to make sure that’s set up right.
Reply To: MPCNC 2.8w $100 laser add-on complete