Modifying a Engraving Laser Module with out a TTL Module

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  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6030
    • USA

    #1

    Modifying a Engraving Laser Module with out a TTL Module

    I bought this laser module a few years ago and did not do anything with because I did not have a TTL module so it sat in project box to do something with at a later date

    Well the later date has happened now

    What I did to this module is disconnected the cooling fan and going to use with a fan temperature speed controller ( out of a surplus computer switching power supply )

    Well now I have found a 15 watt TTL module that I just bought from AliExpress which I should have in a few weeks

    Some time later when I have learned to use a laser engraver I going buy a 30 watt laser

    I modify the engraver controller board because they left off some of the components for the laser power TTL output so I just took the TTL output from the Arduino Nano an put it to a 4N35 optic sensor to control the laser and ( or ) also a variable speed drill controller that I am either going to buy or make I have not decided which way I going to do this part ? ?

    I still have to get some ā€œVā€ slot rails because the engraver is to small for what I would like to do with it

    The EBay seller that I am going to buy this stuff from they have to give the shipping cost before I make this order

    I have done some testing with the software that I going to use for the engraving
    The stepper motors which seems to work pretty good

    Here is the link to the laser TTL controller

    https://a.aliexpress.com/_d8iUPPV
    Attached Files
    Last edited by sam_sam_sam; 07-25-2020, 03:52 PM.
  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6030
    • USA

    #2
    Re: Modifying a Engraving Laser Module with out a TTL Module

    I have a question about finding a TTL spindle motor speed controller board ( motor and speed controller as second choice) ( 24 volt versions preferred ) I have several motors already
    I having a hard time finding what I am looking for

    Dose anyone know where I can find one for about $100.00

    One note I have tested this laser on a PWM motor speed controller board and it works correctly down to a voltage around 4.20

    I have run this laser outside at full power and this thing is bright as hell at about 100 feet away on a wall this was before I modify the laser module ( probably not more than 30 seconds )
    Last edited by sam_sam_sam; 07-25-2020, 04:20 PM.

    Comment

    • sam_sam_sam
      Badcaps Legend
      • Jul 2011
      • 6030
      • USA

      #3
      Re: Modifying a Engraving Laser Module with out a TTL Module

      Well now I am working on the switch panel for the laser printer
      I had bought some surplus switches from Electronic Goldmine a couple of months on one of there sales that have for a few days and then end most of the time ( more than 1/2 off regulator price )

      I making a switch enclosure with 3D printer test piece to make sure I have the measurements and the switches fit and the switch can slides back and forward

      One problem with these switches is there is no mounting taps to mount them correctly

      So I have to make a enclosure around the switch housing and then use some hot glue to keep them in place
      Attached Files
      Last edited by sam_sam_sam; 07-26-2020, 04:45 PM.

      Comment

      • Curious.George
        Badcaps Legend
        • Nov 2011
        • 2305
        • Unknown

        #4
        Re: Modifying a Engraving Laser Module with out a TTL Module

        Originally posted by sam_sam_sam
        One problem with these switches is there is no mounting taps to mount them correctly

        So I have to make a enclosure around the switch housing and then use some hot glue to keep them in place
        The switches shown are intended for direct mounting to a PCB. Had they been intended for a panel mount application, they would have had "ears" as well as holes in the "pins".

        I'm leary of how effectively "glue" will adhere the (smooth) metal switch body to a plastic case.

        If you're printing the panel/mount, you might consider making some "latches" that "snap" around the switch to hold it to the panel
        Attached Files

        Comment

        • sam_sam_sam
          Badcaps Legend
          • Jul 2011
          • 6030
          • USA

          #5
          Re: Modifying a Engraving Laser Module with out a TTL Module

          Originally posted by Curious.George
          The switches shown are intended for direct mounting to a PCB. Had they been intended for a panel mount application, they would have had "ears" as well as holes in the "pins".

          I'm leary of how effectively "glue" will adhere the (smooth) metal switch body to a plastic case.

          If you're printing the panel/mount, you might consider making some "latches" that "snap" around the switch to hold it to the panel

          You have a good point about keeping them in place ( thanks )

          My idea now is to make the taps on cover between the terminals to help keep them in place
          Last edited by sam_sam_sam; 07-29-2020, 07:05 AM.

          Comment

          • sam_sam_sam
            Badcaps Legend
            • Jul 2011
            • 6030
            • USA

            #6
            Re: Modifying a Engraving Laser Module with out a TTL Module

            The tabs would go on the back cover

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Modifying a Engraving Laser Module with out a TTL Module

              Beside adding the fingers, you can add small walls to the side of the switch too.
              Attached Files
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

              Comment

              • Curious.George
                Badcaps Legend
                • Nov 2011
                • 2305
                • Unknown

                #8
                Re: Modifying a Engraving Laser Module with out a TTL Module

                Originally posted by sam_sam_sam
                You have a good point about keeping them in place ( thanks )

                My idea now is to make the taps on cover between the terminals to help keep them in place
                The risk, there, is that soldering to the terminals (the initial connection OR a repair) will have the iron "slip" and melt away one such tab.

                [You have the switches there to examine; you can best gauge how far any plastic would end up from a likely solder connection]

                Also, think about the forces that are exerted on the switch when actuated. Some slide switches move like greased butter. Others are really "sticky". This will help you decide how firmly you need to hold them in place.

                Comment

                • eccerr0r
                  Solder Sloth
                  • Nov 2012
                  • 8689
                  • USA

                  #9
                  Re: Modifying a Engraving Laser Module with out a TTL Module

                  Since it's a pcb mount switch, how about just make a little PCB or perfboard for it and screw the pcb to the panel? Too much work?

                  Definitely something to be thought of when using for new design...

                  Comment

                  • sam_sam_sam
                    Badcaps Legend
                    • Jul 2011
                    • 6030
                    • USA

                    #10
                    Re: Modifying a Engraving Laser Module with out a TTL Module

                    I would like to thank all of you that have had recommendations for this project

                    Comment

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