Laser Control

[skipper_52]

Does anyone have a wiring schematic for adding a laser to a cnc router.
I am running mach 3 which will probably be controlled via ttl to ground. I do not have an ethernet card so I believe pwm is not possible.
I am running a gecko g540 card.

The ttl needs 5v which I believe I might have to supply that with a buckboard off the 48v power supply.

The only control I have over laser power is the hand adjustable pot which is used for focusing so I don;t believe I can do greyscale.

Any help is appreciated.

Thank

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[PlanetCNC]

If you use Mach3 then you are in wrong forum. This is for PlanetCNC users.
With PlanetCNC controller you can use pins 1, 2 or 6 to switch laser on/off and control power.