RGB Laser Projector

admin    All projects, Laser     AVR, driver, Laser, projector, rgb

History

This project is my second one with laser, I had learn many thing from my first green laser projector. Now I had decide to make a professional laser projector with 3 laser of 3 different color, Red, Green and Blue. And with galvos who have better spec.  I had buy a 30kpps galvo, a 300mw red, 80mw green and 250mw blue. 

It's a lot of power, you finger will be burn intently  if you put it in front of the beem that's very dangerous. the reason I had those laser power is simple, If you want to have white line or dot you need the same amount of RGB, and you need to know that the green laser is many time more visible than the red and many many time more visible than the blue.  With those power I have a very clean white line and all the other laser combination are very good.  There is a lot of alignment to do to make a good job,  If you look to my pictures you will see how with simple screw and spring how I had done my project to be easy to align, All my optical part are mount on a MDF peace of "wood" with a "refrigerator" magnet on the other side.  The optical part are on a steel plate so all the part are easy to tune in all direction. I had use the same MCU board I had done for my green laser projector,  the only difference I had 2 more output to drive 3 laser.  Driving laser in on/off look to be simple but in fact this is not, you can't only use a current regulator (LM317) and switch it on and off,  you will have current surge and you will burn your laser.  The blue laser are the most sensitive, I had burn 5 of those at 60$/each.  if you need a very good RGB driver I suggest you to buy the one made by norm,  the price is very low and it's work very fine check :  http://www.ctrnd.com/NormLaserShow/Products.htm
 

Features

• 3 laser, Red, Green, Blue
• 30kpps galvos
• Over clock AVR to 30Mhz
• Easy to align laser beam
• MCU controlled via a IR remote control

Hint

• Everything laser, galvo, driver, protective glass could be buy via ebay
• Use a smoke machine when you align your optic, you will see where your beam are
• Please take care of the beam it's so dangerous, you can loose your vision in 1 mili-second…

Pictures

Download

Laser Scanner Schematic

Laser PowerSupply Schematic

MCU Source Code

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