4 ms·
Modulating a laser at audio frequencies is pretty trivial. You can probably inject the signal straight from the headphone output of a smartphone into the right
by eeZah7Ux 7y ago
Modulating a laser at audio frequencies is pretty trivial.
You can probably inject the signal straight from the headphone output of a smartphone into the right pad in the laser pointer with a decoupling resistor and inline capacitor.
...if you don't care about audio quality and longevity of the laser.
http://www.yak.net/fqa/229.html http://www.yak.net/fqa/229.html