Building a laser audio transmitter for under 15 dollars

[Stephanlemay]

Anyone know where I can get a wiring schematic for this? They made no mention of the colors of the output transformer. There is Red and white (I know this is 8Ω audio input), then Black, Blue, and Green. What do I do with these 3 wires?

[cosmicgate07]

ur a sukcer n suck

[benbirdy]

allright besides "cool music"...nerds

[TheWinner1121]

and i was wondering if u can use a plug in instead of batteries for the laser communicator cant you use a switch to switch it on and off so you can leave it plugged in

[colouredguy]

@TheWinner1121 you wonder alot dude

[TheWinner1121]

and i was wondering if u can instead of using batteries for the laser communicator

i was wondering if there is someway u can use a plug in so u can plug it into the wall instead of using batteries

[TheWinner1121]

cause i also know u can use a microphone to it but how to you connect them together along with the speaker

[TheWinner1121]

Hi i was wodnering if u lived say 3 blocks away from your friend and you both had laser comunicators and u wanted to talk to one another could u do it through the laser comunicator by placing mirrors bouncing the laser pointer from point A to pint B and so on if u get positioned correctly could u do it and use it like a phone or a walkie talkie or something like that

[JamesLongpaw]

humm if you put this though a fiber optic cable couldn't you almost eliminate the line of sight problem?

[omardude39]

@JamesLongpaw the issue with that is that along the length of the fibre optic the laser light is broken up somewhat, and you might find the light radiated from the other side of the cable is too scattered to affect the photodiode correctly.

however, if you used a powerful enough lasser, for certain segments a short length of fibre-optic cable (say, to turn a corner) could work. You wouldn't use one the whole way though, else you'd just have the long wires problem again!

[fender18295]

@JamesLongpaw yeah, but thats no different than the original problem that was proposed. but good idea.cleaner sound quality i bet.

[pdegameplayer]

so.... can this work with Infared lasers? if so that would be wicked cool

[UberSecret]

Fwiw: Decades ago, the military has been able to illegally listen in on anyone's private conversation remotely by interpreting the interference pattern the (invisible) laser beam creates after returning from another location reflected by an object (such as a window) that was vibrating from the sound waves made nearby. (Paranoids turn up the volume & use heavy curtains.)

[zeustho]

its big stereo dude

[TheDanceReactor]

Looks like its wired mono?

[nltubeyou]

It is

[AORNOfficial]

from where can i buy that transformer and what is the aproximate price?

[cervantesphantom]

@AORNOfficial

Go to your attick or basement anf find an old AM/FM radio. With luck it will have an audio output with a audio tranformer inside. It's the one that goes directly into the speaker.

[superior0011]

could i just use the ir sensor on the stereo it self just wire it up internaly

[Ampz316]

is it possible to somehow transmit video via a laser?

[connelly6375]

yes, you can transmit what ever you want

[Jorisd]

I would love to see this applied to a modem: it would not be too hard to use two sender/recievers (a couple of centimeters apart), wired up to a phone jack to your laptop's modem. That way, you have a high security optical wifi!

[1CravenMorehead]

stumbled

[definca]

would like to see how it worked from across the room. the dot would be a bit larger. cool vid.

[ColdfireNightfire]

I thinkk I saw on other vids obout this , If you use a solar pannel instead of a photocell on the reciever you can eliminate the battery

[NerdHelpDesk]

just get a fm transmitter..

[modmadmike2]

yea but if your source has digital (RCA connector) and your output then you can just connect it to a diode and then the laser and the photocell to the input :)

[DrHavanger]

pretty cool

[matt4magic]

7:45 lol

[Atevra]

nice, i made one of these once... I think i found out about it from hak5irc

[TheCraigMac]

Hardware Hacking FTW!!!