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laserbeamersmiley | by kap4001
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laserbeamersmiley

built a controllable laser pointer!

 

it consits of a 5v laser module and two servo motors hold together by cable straps and is controlled trough a pololu serial 8-bit servo controller by some python code.

the laser module is simply switched trough the serial ports DTR line, that gives pulses as fast as the serial connection speed.

 

very unstable thing, but good enough to draw some crappy pictures on walls by taking long exposures (check the exif tags)!

 

its not easy to speed this thing up since you soon come to the point where you have to calculate the timing of your laser pulses with estimated servo speed and momentum. physics, basically, but i ran out of time to develop it really into someting. next try maybe with an arduino and some realtime assembler code..

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Taken on November 24, 2008