Home Made Laser Scanners
- Thread starter LED-FX
- Start date
The_LED_Museum
*Retired*
Very impressive!!! /ubbthreads/images/graemlins/happy14.gif
You can also build a cheap X-Y laser scanner (produces lissajous patterns only) from the azimuth adjustment assembly out of an old laser disk drive. Two channels (x and y), and each can be driven at up to 2 watts - think of them as speaker coils. They operate much like speaker coils - a coil of wire around a magnet, this is on a pivot so that a small round mirror can move back and forth as a signal is present on the coil.
Responds best to lower frequencies, like drums, low notes on a keyboard, and bass guitars.
You don't have to actually build anything but a driver circuit; if you just want to have it react to music, connect it to the speaker output jacks on a ghetto blaster.
I know I have one of these things around here somewhere - maybe one I blew up. If I find it, I'll take a photograph of it and post it in this thread.
You can also build a cheap X-Y laser scanner (produces lissajous patterns only) from the azimuth adjustment assembly out of an old laser disk drive. Two channels (x and y), and each can be driven at up to 2 watts - think of them as speaker coils. They operate much like speaker coils - a coil of wire around a magnet, this is on a pivot so that a small round mirror can move back and forth as a signal is present on the coil.
Responds best to lower frequencies, like drums, low notes on a keyboard, and bass guitars.
You don't have to actually build anything but a driver circuit; if you just want to have it react to music, connect it to the speaker output jacks on a ghetto blaster.
I know I have one of these things around here somewhere - maybe one I blew up. If I find it, I'll take a photograph of it and post it in this thread.
WildRice
Flashlight Enthusiast
you sure could, the only hard part is that the red diode is smaller then the greens. but that should be the only priblem. Oh, and yes, powering it.
Jeff
Jeff
PhotonWrangler
Flashaholic
Meredith Instruments has a single-axis polygon scanner for $29.00
LED-FX
Enlightened
The meredith things are pulled from phototypesetters and some really old laser printers.
Theyre really just spinning mirrors, and will generate a stright line, with a little laser , like a pointer, a glass rod has much the same efect.
Liquid sky uses lots of power and haze to be really effctive.
Huberts laser page has a few well illustrated ideas
http://spt06.chez.tiscali.fr/00/lasers.htm
Including the speaker freaker that Craig mentioned.
Adam
Theyre really just spinning mirrors, and will generate a stright line, with a little laser , like a pointer, a glass rod has much the same efect.
Liquid sky uses lots of power and haze to be really effctive.
Huberts laser page has a few well illustrated ideas
http://spt06.chez.tiscali.fr/00/lasers.htm
Including the speaker freaker that Craig mentioned.
Adam
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