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Old 06-01-2013, 12:24 AM #1
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Default Mini Laser CNC

I just finished a little 2 axis laser etcher of sorts. It uses sleds from dvd drives and is controlled by an Arduino. I am by no means a good programmer so the code that controls it is more than likely horribily ineffecient, but i am happy that it works. So far ive made three different designs for it to draw, the FaceBook logo, the YouTube logo and the Aperture Science logo from the Portal games.

Diode: a140
Driver: LM317T ~1.25A
Lens: Aixiz 405nm AR

The Arduino is a Micro and the stepper motor drivers are EasyDrivers from sparkfun.



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Last edited by Gryphon; 06-01-2013 at 12:25 AM.
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Old 06-01-2013, 12:44 AM #2
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Default Re: Mini Laser CNC

I really want to try something like this. Are these just cd trays with the sled as the moving part?
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Old 06-01-2013, 01:20 AM #3
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Default Re: Mini Laser CNC

That's Awesome Gryphon!

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Old 06-01-2013, 02:19 AM #4
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Default Re: Mini Laser CNC

Quote:
Originally Posted by Speedy78 View Post
I really want to try something like this. Are these just cd trays with the sled as the moving part?
Yup, i just drilled two holes into the sled in places that had the most material and then screwed in the small peice of particle board to make the decks. I had to use 6 washers underneath eack deck to make them level and to raise them up slightly to clear the wiring for the motor.
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(3x) 405nm
(6x) 445nm
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(1x) 543nm
(1x) 632.8nm
(1x) 635nm
(3x) 660nm
SSY-1 Laser
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Old 06-01-2013, 03:22 AM #5
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Default Re: Mini Laser CNC

How do you hook up the steppers. There are 4 or 5 wires on them. Do the drivers have instructions? Also would you be able to email me the arduino code you wrote?
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514.5nm ML Argon
532nm SkyRay King Gre3n 35mW/60mW/70mW~Phobos Fasttech 70mW~Optotronics RPL-500 450mW~JetLasers Ti B 170mW
543.5nm Bare tube HeNe ~3mW (Nightstand lamp)
632.8nm Bare tube HeNe ~3mW~Bare tube HeNe Multimode 12mW (Desk Lamp)
638nm Mrcrouse Custom 650mW
658nm wannaburnstuff baby shower gift? 127mW
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Old 06-01-2013, 04:49 AM #6
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Default Re: Mini Laser CNC

The motors are bipolar so they only have 4 wires. All i had to do was use a multimeter to figure out which wires were paired up and them hook them up tp the drivers accordingly(the pads are marked for each of the two phases). After that all you have to do is apply 5v to its power input and use two signal wires to control it. Toggling the "step" input from low, high, low(single square wave) will tell the driver to take one step. The state of the second signal wire tells the driver in which direction to take the step, either high or low for either forward or reverse stepping.
Ill go ahead and put some comments in the code so its easier to follow.
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I see................wait, what now?

(3x) 405nm
(6x) 445nm
(4x) 532nm
(1x) 543nm
(1x) 632.8nm
(1x) 635nm
(3x) 660nm
SSY-1 Laser

Last edited by Gryphon; 06-01-2013 at 04:50 AM.
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