I had a thought, after reading about the laser projector on Hack A Day:
Why not make a POV with Lasers?
I'm not sure what the power requirements are for laser diodes, but I just thought it would be neat. You could display your image on any flat surface, from a reasonable distance.
Just a thought I had. Every day we get a little bit closer to my dream: having frickin' sharks with frickin' laser beams attached to their frickin' heads! And PIC on earth.
Laser POV
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Please be positive and constructive with your questions and comments.
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Possible
Started building one using an old harddisk and spinning the platter with a mirror on top, at a constant speed to allow the laser beam to 'scan' across the wall for X axis.
The w/r arm obviously moves another mirror on the Y axis, so you can create o-scope images on the wall.
To go POV with it:
To get some accuracy on it, control for the beam on/off and the usual RPM detect (beam break) on the platter. So a PIC or AVR can do the work here.
If you can scan quickly enough to generate a square blob on the wall, your virtually there. Workout the lines you have then on every line, turn your laser on/off at the points you want the image.
Tada! - crude television, with a laser instead of cathode ray.
Started building one using an old harddisk and spinning the platter with a mirror on top, at a constant speed to allow the laser beam to 'scan' across the wall for X axis.
The w/r arm obviously moves another mirror on the Y axis, so you can create o-scope images on the wall.
To go POV with it:
To get some accuracy on it, control for the beam on/off and the usual RPM detect (beam break) on the platter. So a PIC or AVR can do the work here.
If you can scan quickly enough to generate a square blob on the wall, your virtually there. Workout the lines you have then on every line, turn your laser on/off at the points you want the image.
Tada! - crude television, with a laser instead of cathode ray.
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There's this one http://cscott.net/Projects/FabClass/3/ and another laser/spinning mirror/clock project out there that I can't find at the moment.
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not exactly the same thing, but ...
There are some people who are really into home-brew laser displays -- they
even build their own galvanometers! For instance, check out:
http://elm-chan.org/works/vlp/report_e.html
http://www.joeyhagedorn.com/v/electronics/Lasergalvo/
even build their own galvanometers! For instance, check out:
http://elm-chan.org/works/vlp/report_e.html
http://www.joeyhagedorn.com/v/electronics/Lasergalvo/
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Laser POV? Like this one?http://web.media.mit.edu/~stefanm/TinyP ... ok_01.html
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Re: Laser POV
Looks like Sony's gonna come to market with this.
http://www.engadget.com/2010/02/03/sony ... s-compact/
http://www.engadget.com/2010/02/03/sony ... s-compact/
Please be positive and constructive with your questions and comments.