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Thread: Help: RMI Galvo Laser Engraver

  1. #1
    Join Date
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    Default Help: RMI Galvo Laser Engraver

    I recently purchased a laser engraver off ebay. I am new to galvo lasers and need help with driving it. Originally the system came with a DAQ card but that's long gone. The marking head has a 37 pin connector for the computer interface. I am curious if there is another was to communicate with they head other than the PCMCIA DAQ card. Any help getting it connected and talking to the software would be appreciated.
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  2. #2
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    Default RMI Manual

    Here is the manual...
    Attached Files Attached Files

  3. #3
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Default

    Please see image annotated.

    At 8 watts you need Optical Density Six, ( OD6 ) safety glasses to work on this if you have to adjust the hardware. Its Q-switched, so the pulses are insidiously dangerous if viewed by the naked eye. Reflections are an issue with that short pulse length. Even diffuse reflections are quite a hazard.
    The only way you cna view 1064 is with a CCD camera or IR image converter tube (Find-R-Scope) and even then a silicon CCD or CMOS imager is barely sensitive to 1064.
    To get 8 Watts of Q-Switched IR from Vanadate, you would have between 16 watts to 30 watts of pump diode at 808 nanometers as well. SO if you open up the laser head, you need glasses for both 808 (OD 6 Minimum) and 1064 nm.

    1064 burns the surface of the skin, 808 dives down into tissue and hits nerves/veins/arteries as well as burning the surface of the skin.

    BE careful.

    Steve
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  4. #4
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    Default

    Can you show what's on the other side of that 37 way connector? If it's one of the common marking interface cards, you may be able to drive it with free software without too much additional hardware.

  5. #5
    Join Date
    May 2019
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    Default

    I have the manuals and the software from RMI. It's the connection from marking head to PC that I need. Like I said, i dont have the DAQ card and cables that RMI originally provided with the system for the control interface.
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  6. #6
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    Default

    The AD660's on the control board are DAC's...
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

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