Laser to Ramps

Hi there I have a RAMPS 1.4 plus 2, I want to convert my machine as Laser engraving and CNC and 3D printer, my card already has a laser port but I do not mucho about what to do, can anybody help me?

this is my card

[reprap.org]

... I'm mostly using the extruder-step-pins, e.g. the STEP pin of E0 to control my lasers.

To adjust the power, my laser-drivers have a trim-pot and "set"-button, to adjust the pulse-length to the trim-pot voltage -- 0V to 5V will give 5 microseconds to 300 microseconds pulse time.

Then it's pulsing synchronous to the XY-movement (as needed for extruding the correct volume too) and - the longer the pulses, the more power ...

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Viktor
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