Comments on: Laser POV projector

By: Charles Shults

Charles Shults — Wed, 15 Sep 2010 22:58:00 +0000

Well, I built one of these in 2001 using 32 green lasers. I still have it. It’s far larger of course and was the third one. The first was made with some cheap red laser pointers and the second was made with eight green lasers. The scanner system I made however uses an oscillating mirror and draws both forward and backward, retracing the text for intensity. I should post pictures if anyone is interested. I don’t think there was a Hackaday back then.

By: nosferatuspacho

nosferatuspacho — Tue, 20 Jan 2009 08:31:44 +0000

yes, looks great….
i think you can do greats mods, i remember one time i do anything like that, i do an spectrum analyzer for audio, he are like scope !are all analog!,…. actually i´m tryin to learn how to program… i do flash led and now i got new horizons, i will try near to got bi-mechanical scaned lasser, if you got me i will they project like fisheye signal from pick up readers… maybe someday.
EQU this awasone.

By: shakirfm

shakirfm — Wed, 24 Sep 2008 05:34:48 +0000

eeks.. where did those yellow smilies come from. hmm.. heres a thought.. they could be replaced by smiling skulls and bones :]

By: shakirfm

shakirfm — Wed, 24 Sep 2008 05:31:29 +0000

@ Odin84gk: yeah i’ll do that. thanks :) glad you found the video interesting.
@ BiOzZ : well, i tried using a stepper motor at first, but it doesn’t rotate fast enough to maintain the minimum 30 fps required. and if you want a to and fro motion, somehting like the tinyprojector featured here earlier is the best bet i think.

@ scott : you’d be surprised at how thick my examiner turned out to be. the man wanted me to display a jpeg image using this thing! glad you liked it :)

@tuckie: well, aligning the 5 lasers so that it could display legible stuff was the hardest part actually. required a rather mechanically complicated assembly with provision for real fine adjustment of angle.

@ramesh: thnaks for the encouragement! :)

By: ramesh

ramesh — Wed, 24 Sep 2008 03:55:01 +0000

“WOW thats a nice improvement keep the good job on development all the very best to u guys”.

For others on this site:
these guys have put their whole hearted effort and brain into this job please give them the lead and guidance. this group of young engineers have the potential.

By: BiOzZ

BiOzZ — Tue, 23 Sep 2008 20:00:48 +0000

i find that using a single mirror and a steeper motor that moves the mirror 40* back and forth seam suitable

By: Odin84gk

Odin84gk — Tue, 23 Sep 2008 16:29:12 +0000

When you do serial to hyperterminal, you should use a line feed, then a carriage return. (that way the text will line up to the left side)

0x0A = Line Feed
0x0D = Carriage Return

Other than that, it was an entertaining project.

By: Tuckie

Tuckie — Tue, 23 Sep 2008 13:55:58 +0000

I really like the idea of using multiple lasers, makes things a bit easier.

By: scott

scott — Tue, 23 Sep 2008 12:39:28 +0000

What a unique invention, I’d say that guy got a good grade :]

it’s a pretty interesting idea though, sure, LED POV’s used to be the big thing, but taking that idea to a laser array was brilliant, And it projects!