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Laser module only has 3 pin connection

Discussion in 'Laser Cutters' started by Chillimonster, Apr 18, 2019.

  1. Chillimonster

    Chillimonster Veteran
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    i did a search to try and find an answer so forgive me if it’s already been covered.

    I fancy having a play with a laser on my Sphinx build

    But the one I’m looking at has just one 3 pin connector on the control board for power (12v) and pwm

    How would I connect this to my OB Blackbox controller?
     

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  2. Mark Carew

    Mark Carew OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Builder

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    We are working up a video a new ACRO video to show how this is done.In fact we used that same module in the video. Until it's released I can tell you that we used a 3 pin Xtension connector from the laser to the the BlackBox and to the lasers Power supply. We do this by sharing the middle pin as a ground and running two two conductor wires back. One for the laser power supply and the other for the pwm signal to the BlackBox.
    Ahh it's going to be easier to just show it :D
    The video is unlisted at the moment but here you go
    Attaching a laser diode to your ACRO system
     
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  3. Chillimonster

    Chillimonster Veteran
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    Perfect! Thanks for the speedy response Mark

    I suspected that i needed to share the ground, but needed the confirmation.

    What Laser are you using on the demo vid - Looks very similar to the one i'm ordering...

    Chris
     
  4. Mark Carew

    Mark Carew OpenBuilds Team
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    Thank you sir glad it helped! :) I am using 5.5W 445nm Blue Laser Module I found on ebay. It was about 150 and so far is working nicely
     
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  5. Chillimonster

    Chillimonster Veteran
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    Mine should be here by weekend then another learning curve begins.

    The only thing that concerns me with the 5.5w laser is reports of poor grayscale reproduction where as the 2.5w seems to cope better.

    A bit (a lot) of testing will find out if that is true :)

    Anything to show from yours?
     

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