Chinese 5mW red line laser – driver/heatsink?

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This topic contains 2 replies, has 2 voices, and was last updated by  Leo69 3 years, 3 months ago.

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    Mike Cunningham

    I bought 2 of these, to use as a crosshair, primarily for my 2.8w laser; but they won’t be here for ~2 months…

    Do these have a built-in driver/current limiter; or do I need to get those aswell? I am assuming that because they cost ~20 times what a regular 5mW diode costs, they would have a driver in them; but I am seeing a lot of different opinions on different pages… some people use external drivers, some don’t…

    Also, a 5mW laser should not produce enough heat to warrant a heatsink, would it?




    I see the 5v source voltage is listed but What’s the input current? I’m guessing approximately 40-50ma. If so, no driver should be can connect directly to an unused digital pin on Ramps board and switch/power the diode through a marlin m42 command.



    5mw is standard issue dollar store laser heat sinking should be required. The module housing is plenty.

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