Laser always on

  • I bought EleksMaker® EleksLaser-A3 Pro 2500mW Laser Engraving Machine CNC Laser Printer.
    When I receive the package, laser module was missed.
    I think board is latest one. Laser connector use 3 pins that are 12V/GND/PWM.

    After long conversation with BangGood, I got the laser module that is "EleksMaker® LA03-2500 445nm 2500mW Blue Laser Module With Heatsink For DIY Laser Engraver Machine".

    This laser module has power connector. I cannot connect to the board.
    So I cut the cable and connect to the board. Because my laser module has only 2 line, I could connect 12v and GND.

    When I turn on the machine, laser turn on and start burn. So I turned off.
    I followed instruction. Connect usb cable and open software and checked the connection from EleksCam software. I click laser off button.
    And then turn on the power switch. But still laser on and start burn immediately.

    I guess I got the old laser module. Laser should have 3 pins.

    How can I fix it? Do I need new laser module?

  • Developer of T2Laser Software

    If the laser module only has 2 wires then it must use the motor connector, some have a TTL input on the board (on top of the laser), if so you can use the 3 wire laser connector but also need to connect that wire to S on the board.

  • It works with motor connector.
    Only problem is that I don't have 2 pin connector. I just connect by force.

  • I recently put together my 5.5w a3 kit and have the same issue with the laser staying on full power. Laser was in the kit however, and has the proper 3 wires on both ends. (lucky me?) Anyways, I still haven't figured out the answer yet and hoping someone chimes in that can help, because even resetting the rom from elekscam doesn't help.

  • Developer of T2Laser Software

    Try loading Grbl 1.1e from T2Laser, that will tell you if the laser is faulty or it's a firmware / software issue.

    See attached (step #1 doesn't apply to your board so I didn't copy it)0_1489495653151_uploadfw.jpg

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