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Laser Engraver Control Board

Discussion in 'Laser Cutters' started by oni305, Feb 9, 2014.

  1. oni305

    oni305 Well-Known
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    Hi all, here we are with the (likely) final version of the control board!
    With a cool new feature: the ability (OPTIONAL OFCOURSE) to faking the Z axis for triggering the limit switch, for when you have only 2 axis and you still want performing the Homing cycle


    gr.png
     
  2. Ronald Holze

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    Hi oni305,

    where can I get one of the boards or *.BRD file to start my own laser project?

    Regards
    Ronald
     
    pcwhiz likes this.
  3. oni305

    oni305 Well-Known
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    Hi
    Right now I'm testing the new design!
    The base board works fine but I have yet to try the laser driver

    I have some unpopulated boards, if you are interested (both old or new)


    [​IMG]


    [​IMG]
     
  4. Waiata

    Waiata New
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    Hi oni305
    I see your Raster 2 Laser GCode generator at github now works with the latest Inkscape 0.91 which is excellent as it automatically maintains the correct size of the original artwork. I have however got a slight problem when making PCB boards on my laser machine, because of the small amount of backlash inherent on all machines I end up with a small amount of overlap of the laser when it goes one way and then the opposite way. This causes a real problem when making narrow PCB tracks it ends up becoming sort of a zig-zag track. Do you have any suggestions how it may be possible to only turn on the laser when it goes in one direction. I think that would overcome the problem.
    Cheers Alfred
     
  5. oni305

    oni305 Well-Known
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  6. pcwhiz

    pcwhiz New
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    Hi goodjob oni305...i hope it does PCB etching ...any possible to use only schematic for laser driver setup using on rampps board or cnc shieldv3 because dont need those steppers(from your board) in this case more thinking for expansion my own boards just editing the code and voila should be working
    wants to build meself or buying jtechphotonics.com only laser driver solution but exceeds my budget in shipping and customs say about almost in total 250 dollars... absurd

    I just read you still have pcb boards how many$ where from? possible to use drv8825 steppers?
     
    #96 pcwhiz, Jun 11, 2015
    Last edited: Jun 11, 2015
  7. plexer

    plexer New
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    Looks good I hope to be able to use one of these on a future project, with regards to the homing cycle that's a good idea if you don't wish to edit the grbl config.h to remove z from the homing cycle.

    Ben
     
  8. Woodie49

    Woodie49 New
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    Are the boards for sale or ?
    Larry
     
  9. oni305

    oni305 Well-Known
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    Yes I can sell some PBC

    1) OLD (no pwm, laser driver integrated) 9€ (10$)

    2) NEW (pwm capable) without laser driver 9€ (10$)

    3) NEW (pwm capable) + Laser driver board 13€ (15$)

    + Shipment 13€ (15$)


    [​IMG]
     
  10. plexer

    plexer New
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    These are for blank un-populated pcb's?

    Thanks,

    Ben
     
  11. oni305

    oni305 Well-Known
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    yes unpopulated, pcb only :D
     
  12. Mr Nam

    Mr Nam New
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    Anybody please help me. I got a problem like this :(
    I tried to install on 3 computer but it didn't work.

    This is an error code :

    Traceback (most recent call last):

    File "raster2laser_gcode.py", line 531, in <module>

    _main()

    File "raster2laser_gcode.py", line 526, in _main

    e.affect()

    File "C:\Program Files\Inkscape\share\extensions\inkex.py", line 268, in affect

    self.effect()

    File "raster2laser_gcode.py", line 126, in effect

    self.PNGtoGcode(pos_file_png_exported,pos_file_png_BW,pos_file_gcode)

    File "raster2laser_gcode.py", line 170, in PNGtoGcode

    reader = png.Reader(pos_file_png_exported)#File PNG generato

    File "C:\Program Files\Inkscape\share\extensions\png.py", line 1376, in __init__

    self.file = open(kw["filename"], "rb")

    IOError: [Errno 2] No such file or directory: 'C:\\Khac\\nam_0001.png'
     

    Attached Files:

  13. oni305

    oni305 Well-Known
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    'C:\\Khac\\nam_0001.png' seems strange...

    OS ? 32 or 64 bit?
    Inkscape version? 32 or 64 bit?
     
  14. AK-Creation

    AK-Creation Well-Known
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    oni305 likes this.
  15. mo22

    mo22 New
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    Hey, you are still working on it and also with laser driver PWM, nice

    May you remember you send me some pcb's of the first version to germany, now im very interested in your updates, would you like to send me the shematics?

    Did you needed to modify GRBL for the new driver?
     
  16. oni305

    oni305 Well-Known
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    Hi,
    Yeah, I remember you ;) The board works fine?
    For GRBL it depends, if you want the PWM you have to upload the correct version. (even compiling with the arduino ide is pretty simple)

    (I've sent you a PM)
     
  17. mo22

    mo22 New
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    Thank you so much! :)

    Well, i did so many diffrent things, that i never finished the boards. But i've been getting all parts needed and still willing to do so.

    About the GRBL you use for PWM, you switched the arduino pins 12 and 11, which is pin 15 and 16 on the ATmega chip and used the stock GRBL with spindle PWM right?

    Im actually planning to integrate this also in Marlin, as i did with a PID closed loop AC Spindle controll allready.
    Maybe i can manage to have a gcode supported way of controlling the laser PWM from Marlin in a better way too.
    But yeah, i really need to finish this soon. Will get back with some results here as I'm able to finish this.

    Keep up your awesome work.
     
  18. oni305

    oni305 Well-Known
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    Correct.
    (its possible only with the second board )
     
  19. Gianluca Pugliese

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    Hi Oni, great job!!!
    where are you come from? I would to buy your last PCB and the láser driver
     
  20. oni305

    oni305 Well-Known
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    Hi i'm Italian. (you too?)
    I only have the bare PCB, if you are interested send me a PM
     

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