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DIY laser projector project

paul1598419

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Probably should use spring steel to make springs with instead of guitar strings. The ones you've shown look like manufactured ones. I'd opt for those over anything i could make myself.
 



Mattronium

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Probably should use spring steel to make springs with instead of guitar strings.
Music wire is actually a subcategory of spring steel. Music wire is high-carbon steel while spring steel's carbon content varies from medium to high.

The ones you've shown look like manufactured ones. I'd opt for those over anything i could make myself.
I guess I'll take that as a compliment. It actually wasn't too hard to make the springs. You just have to wind them on a dowel on a drill, then cut them to length, bend the ends, and adjust the ends so that they are centered.

I mostly based my process of off this: https://www.youtube.com/watch?v=jAawhg6JtyY
 
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paul1598419

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It has been a very long time since last I had to look at machining hardware. It you have the tools to do it, it looks like one can make them with a little effort and some math skills. Good luck with your project. I have been watching to see what you end up with and to see if I can use some of your ideas to make a projector of my own.
 

Mattronium

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Alright, I guess this is way overdue for an update.

For the laser drivers I am using the Die4Drive from this schematic: Die4Drive. The only modification that I am making is changing the diode pairs with single zener diodes.

For the electrical components I have two voltage regulators using the LM2941T for the +15V for the scanners and +5V for the diode drivers. I have one off-the-shelf buck for powering the diodes (set to around 9V) and I am using a LM2596 inverting buck for the -15V for the scanners.

Today I finished building the drivers and tested them and they do work. Right now I only need to mount the dicro and mirror mounts to the project.
 
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10fenny

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Wow man that's crazy... I'm not exactly building a pj.. but assembling one. I got a 400mw rgb I took out of a lame e....bay pj. First got it running off quickly ow with some aixiz ttl drivers.. and now installing flex dive analogs. So far got r and g running. Good luck man
 

paul1598419

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Now that I've finished building my 477nm and 502nm lasers, it's time to build my three channel PWM for my LarerLands 300 mW RGB laser. I have collected all the parts I should need and a proto-board to mount it all on. Should give me incremental adjustment of each individual color using 15 turn pots. One for each of the three primary colors. I hope the alignment on this laser is good. I don't want to break the glue loose to adjust them now as they were supposedly shipped already aligned, then glued to stay in place.
 
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ArcticDude

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Now that I've finished building my 477nm and 502nm lasers, it's time to build my three channel PWM for my LarerLands 300 mW RGB laser. I have collected all the parts I should need and a proto-board to mount it all on. Should give me incremental adjustment of each individual color using 15 turn pots. One for each of the three primary colors. I hope the alignment on this laser is good. I don't want to beak the glue loose to adjust them now as they were supposedly shipped already aligned, then glued to stay in place.
I just finished new version of "poor man's laser show" a.k.a HDD XY scanner which utilize my el cheapo RGB module TTL controlled by PIC12 MCU.
I'll post video of it in action on tomorrow, I need to edit that a bit shorter first.. :p
 

paul1598419

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I just finished new version of "poor man's laser show" a.k.a HDD XY scanner which utilize my el cheapo RGB module TTL controlled by PIC12 MCU.
I'll post video of it in action on tomorrow, I need to edit that a bit shorter first.. :p

That should look great. I'm very interested in your photos and to see how you accomplished it. I am still at the stage where my color adjustment is at the user level. Can't really do much more than produce different colored beams. Can't wait to see what you came up with. I know very little about these projectors, but would like to eventually build one myself. I will be looking forward to your post tomorrow. :yh:
 

RedCowboy

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That should be interesting, there's a lot of affordable RGB modules available. :beer:
 




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