Reply To: MPCNC 2.8w $100 laser add-on complete

New Home Forum Builds and Things Built MPCNC 2.8w $100 laser add-on complete Reply To: MPCNC 2.8w $100 laser add-on complete

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Leo69
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@jyount : See Kalle’s creative solution to this problem here: http://www.vicious1.com/forum/topic/mpcnc-2-8w-100-laser-add-on-complete/page/6/#post-15036

The fan PWM value is duplicated on the laser pin (44). That way you can use the M106/M107 commands to drive the fans through the 12V MOSFET output on D9 and use the same M106/M107 commands to drive 5V PWM for laser driver on pin 44. You’re not going to have the extruders and laser running at the same time so this solution should work for you.