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Advice on CO2 Laser Build

Discussion in 'Laser Cutters' started by 2x3 CNC, May 21, 2019.

  1. dandealer

    dandealer New
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    Sorry i had been not clearer in my drawing. Pot is grounded on ground pin. so I have pot wired this way: "GND,IN,5v"
    I had been testing with several lightburn configs and with pot set to max I have 10mA, it stays in 10mA when rotating pot conterclockwise till I reach half of pot range, then it keeps going down when i rotate por til it reaches 0mA. its like for some reason its capped to 10mA max aprox. But if i use test button it can fire to whatever I set the pot ( i had been carefull to not pas 20mA mark)
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    Confirm that gcode from Lightburn, when you set 100%, has M3S1000s in the file? (and not like M3S255)
     
  3. dandealer

    dandealer New
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    Ok, I didnt know what was the problem but now it works.
    I found that lowering velocity setting to 300 mm/min laser started to fire at desired power.
    I deleted the machine setup, created a new one with same values and now it fires as intended at any set velocity.
    Thanks for your help.
     
  4. sitoru

    sitoru New
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    this post is old, but it was exactly what i was missing in my configuration, i had not been getting the correct milliamps until I connected the 5v to in. Now my laser is actually burning and cutting like its supposed to.

    I recently added an amMeter to my laser and to my surprise I was only getting around 10ma even at full power. I had it like that for almost 2 years.
     
    Peter Van Der Walt likes this.

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