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Step 5Give it a try
Point the laser beam at the photodiode, hit play on the iPod, and listen to any and all noises comming from the amp. Play with the iPod volume and potentiometer positions until music can be heard clearly and without distortion on the recieving side. Then turn up the reciever gain as nessisary.
Try mounting the laser on a tripod and sending music a longer distance. I recently was able to hear Starway to Heaven clearly at a beam distance of a half mile. This was done over a small lake, with an assistant in a canue with a pizza box to help with the aiming.
Try mounting the laser on a tripod and sending music a longer distance. I recently was able to hear Starway to Heaven clearly at a beam distance of a half mile. This was done over a small lake, with an assistant in a canue with a pizza box to help with the aiming.
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Jul 27, 2006. 2:20 AMrichard_beauty
says:
i set up the photo transistor but can you tell me which leads of the transistor should be attached to the circuit the base and the collector give some voltage when the laser is pointed at it but the emitter and the base or emitter and the collector dont give us any voltage. i examined different leads but there is no voice in the laptop when i aim laser on it. and also what matters if i replace the mic with 8ohm speaker ,should i here any noise? if yes i don't here any thing. thank you
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