This laser scanner is made from 2 hdd needles with mirrors gluewed to them. 1 needle is driven by a arduino running a sawtooth wave and the other by my ipod connected to a 3w amp. works great only fine tuning is needed. The sound you hear is from 1 of the HDD needles not from a speaker or such.
Негізгі бет Homemade HDD laser scanner running on music
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