Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Low-cost RGB Scanner

L

lmnotran

0
Joined
Sep 20, 2011
Messages
8
Points
0
Searching around the web for people's creations and parts, I've found many different approaches to making a scanner. What I need from you guys is feedback on whether or not you think my idea would work.

So I want to build a RGB scanner using:

  • Soundboard DAC
  • Correction amp
  • 50mW 532nm Green Laser
  • 200mW 650nm Red Laser
  • 1W 445nm Blue Laser
  • Dichros to combine the lasers

I was thinking of using stepper motors instead of galvos, due to the price of galvos.

Any and all feedback is appreciated.
Thanks!
 





Jacob32123

Jacob32123

0
Joined
Nov 14, 2009
Messages
756
Points
0
Stepper motors will result in a flickering image similar to low speed galvos.
 
L

lmnotran

0
Joined
Sep 20, 2011
Messages
8
Points
0
Are you sure? It seems like others have have success with stepper motors.
 
Last edited:
E

ElektroFreak

0
Joined
Nov 7, 2008
Messages
5,725
Points
0
Steppers do work.. slowly and awkwardly compared to galvos, but they do work. That said, IMO you will quickly regret going with steppers over galvos. Then you'll spring for the galvos, which will mean you're in for the cost of both the steppers and galvos. I'd just save up for the galvos.
 
L

lmnotran

0
Joined
Sep 20, 2011
Messages
8
Points
0
Ahhh. I'll probably save up for galvos then! :D Do you know where I can find some entry-level galvos that aren't too expensive?
 
Elektrotechniker

Elektrotechniker

0
Joined
Nov 10, 2008
Messages
4,186
Points
63
I'm not sure about the colors ration though. You won't get many color combinations with this setup.
 
Elektrotechniker

Elektrotechniker

0
Joined
Nov 10, 2008
Messages
4,186
Points
63
i cant really remember how much red and blue you need compared to green. I think for red you need twice the green and for blue too. Lasers with adjustable powers is the way to go for full RGB . I'm not really into projector stuff yet though. Others know better.
 
L

lmnotran

0
Joined
Sep 20, 2011
Messages
8
Points
0
2:1:2 eh? I'll try that haha. I'm probably gonna end up buying overpowered lasers and lowering the max power of each laser. It's always better to have more than you need.
 
bobhaha

bobhaha

0
Joined
May 31, 2009
Messages
3,239
Points
63
Have you done, ANY research?

There are threads here telling you exactly step by step, how to set up a DAC for scanner use. Maybe buy one of those??

If you wanna do this on the cheap its not gonna be anywhere near what you see on videos. Just be aware of that... If you're gonna go cheapskate on it.. you may as well buy a REKE and be done with it.

-Adrian
 
Last edited:
L

lmnotran

0
Joined
Sep 20, 2011
Messages
8
Points
0
I know i'm sacrificing quality for price. See, this thread was mainly for a low-cost "support scanner" that i'm gonna be using in addition to a higher quality, "main scanner", mainly because I want a REALLY wide spread.
 
bobhaha

bobhaha

0
Joined
May 31, 2009
Messages
3,239
Points
63
Have you looked into the REKE series? They are cheap and nasty... but they work... and they're cheap!
 
You must log in or register to reply here.




Top