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Picture of WIRELESS SPEAKER USING LASER
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It will be always fun to play with music and with lights,here it is
the project “Wireless audio transmitter” has both music and light which is to connect the audio source device such as laptop,mobile phone ,dvd player ,etc.., and speaker through laser light .This works perfect for straight line communication of distance 50 meter and more (depends on laser quality ).

This device has two sections i.e, transmitter circuit as sender at audio source side and receiver at speaker side

Step 1: THIS IS HOW IT WORKS

Picture of THIS IS HOW IT WORKS

The working principle of this device is very simple by varying the intensity of laser beam according to the amplitude of audio signal and directed towards receiver section solar panel,as it involves in audio amplification modulation transmission demodulation amplification and output (to speaker)

ntrider19915 years ago
made something similar with allot less parts I used transformers and solar panel s still good instructable

I think the circuit is from electronicsforu.com bcauz i have seen it there

Wow, clever!! Haven't seen anyone try this before.