I did this back in high school science fair using a flashlight and photo resister. This was before red laser was cheap. Anyway, there was two problems. 1. the bulb was incapable of producing the best frequencies and had low range. 2. the photo resister was slow reaction. If i used a laser and a photo transistor it would've been much more advanced.
Shrouding with a "knitting needle hole camera" that the beam can pass through and a red toffee wrapper for the beam to enter. If it's for bright light conditions. Oh and the laser to sit on a black background. An IR laser would be far less affected. To find and point it you'll need an unfiltered cam to see where the beam is pointing. Ignore AM, go digital. These things can seriously flash fast! Notice the data rates while say, burning a DVD or the speed of cable internet trunks?
UK: Lets go to maplin! And then you realize there is only a small section at the back that doesn't sell DJ equipment. It sells massively overpriced electronic components. USA: Lets go to RadioShack! Oh crud they're bankrupt.
I wish to learn about all these creative ways of how people repair or create these handy gadgets however, I don't know where to start. I used to have a class long time ago that involved the crafting of electronics like soldering LEDs onto a PCB and similar activities but that was the last of any class that had activities like that.
One project I have been meaning to do for a decade or two is using the same idea you did here, but putting it so it is bouncing off a music CD, then to the receiver. Add a beam splitter in between that and you have both a music player and a laser light show from the same CD. Yours in World Domination, m.perfidious
Not realy... In fiber optic cable you have digital representation of signal. In most case encoded by some audio codec. Here you have just analog modulation on carrier. More at: en.wikipedia.org/wiki/Modulation
Grzegorz Hetman Heck I'm sure you could send analog data over fiber or digital through the air via laser, why the heck not? You're right though, most fiber optic lines are carrying digital signals. Oh! I have an idea! A three-channel audio line using an RGB LED to transmit over fiber and maybe a prism with three photoresistors or phototransistors at the other end? DIY multiplexing!
Gabriel Rosales They even closed up in Mall of America in Minneapolis. I would've figured it would of been one of the last to go considering the foot traffic.
Yea, this is a cute toy. But how about some file transfer using laser? Just like Li-Fi, LASER should be able to do it and I was thinking: fiber optics use covered glass, so there is no outside light interference, but the "wire" isn't cheap, so how about I use 2 lasers and 2 photoresistors to make an RJ45-like end to send and receive data and another RJ45-like end to send and receive data. That might actually make some sense for a cheap diy wireless (more secure than Wi-Fi) solution.
I made this and I can't see the laser modulate. Does that mean that it's not working? I wired it up exactly like the picture from sci-toys. I'm confused.
Man they should have used something a bit more powerful then a 5mW> red laser....... SO BORING!!. Smack a 3,000mW> blue laser in that bad boy and tell me if you can send music half way across the town :D
Hey Guys love the show,,,, PATRICK I miss u dude!!!!! when I first saw u I said 2 myself ,, hey its Patrick "I can overclock (blow UP!!! LOL) anything" Norton hehehe yea I watched you on TSS with Leo and Kate,, super good show,, you did an awesome job of showin us how its done lol. well just a quick note on this vid,, don't mean 2 b picky,, but I don't see where a carrier is generated (approx 3:12) basically the frequency and the amplitude are modulated from nothing (silence = no voltage) then they are both modulated with the audio. You would need some sort of AM or FM transmitter to induce a "carrier" and then would thus be listening to "RF" instead of "AF" (radio vs audio frequencies) so unless you had a RF to AF decoder on the other rend you would actually hear that carrier using the same receiver you have
rlrsk8r1 I found the problem. It takes a fairly powerful AF signal to modulate the signal. My mp3 player or tablet can't do it from their headset jacks. My old 90's boom box can. Or, you can build an amplifier circuit like a non-inverting op-amp or use a JMC386 audio amp.
kinda disappointing video the last part of the video should be the most epic but you guys peaked at like 3 mins then talked the rest You make good vid and have good chemistry with eachother but show some real results spend some extra money and buy a bunch of lasers of different wattages..make it legitimate
This is like optical audio. You just need it going through a glass cable!
Ahh, brings back memories of Hak5 season 1.
This looks like a lot of fun. Easy/quick enough for a slow Friday project, possibly. Plus, Michael's war face is epic.
I did this back in high school science fair using a flashlight and photo resister. This was before red laser was cheap. Anyway, there was two problems. 1. the bulb was incapable of producing the best frequencies and had low range. 2. the photo resister was slow reaction. If i used a laser and a photo transistor it would've been much more advanced.
I ordered one of those Sharks with freakin laser beam attached to it's head for Christmas. Present for my boss, Dr.Evil.
Shrouding with a "knitting needle hole camera" that the beam can pass through and a red toffee wrapper for the beam to enter. If it's for bright light conditions. Oh and the laser to sit on a black background.
An IR laser would be far less affected. To find and point it you'll need an unfiltered cam to see where the beam is pointing. Ignore AM, go digital.
These things can seriously flash fast! Notice the data rates while say, burning a DVD or the speed of cable internet trunks?
That window looked kind of familiar.....Systm? The Broken?
Annother Burgess.
Cool
UK: Lets go to maplin! And then you realize there is only a small section at the back that doesn't sell DJ equipment. It sells massively overpriced electronic components.
USA: Lets go to RadioShack! Oh crud they're bankrupt.
+TheMiniGeek Radioshack used to be a cool place to go to get stuff, but now there way overpriced stores.
Nerdgasm. Had forgotten about all the time I had spent on sci toys as a child.
I wish to learn about all these creative ways of how people repair or create these handy gadgets however, I don't know where to start. I used to have a class long time ago that involved the crafting of electronics like soldering LEDs onto a PCB and similar activities but that was the last of any class that had activities like that.
Sharks with freaking laser beams
This is the stuff I subbed for
sound and looks like kinda like the infrared networking back in the 90/early 2000s
hmmm that makes me want to try it with an
One project I have been meaning to do for a decade or two is using the same idea you did here, but putting it so it is bouncing off a music CD, then to the receiver. Add a beam splitter in between that and you have both a music player and a laser light show from the same CD.
Yours in World Domination,
m.perfidious
It seems like this is the same way optical audio works, only with the fiber optic cable used as the medium instead of the air.
Not realy...
In fiber optic cable you have digital representation of signal. In most case encoded by some audio codec. Here you have just analog modulation on carrier. More at: en.wikipedia.org/wiki/Modulation
Grzegorz Hetman
Heck I'm sure you could send analog data over fiber or digital through the air via laser, why the heck not? You're right though, most fiber optic lines are carrying digital signals.
Oh! I have an idea! A three-channel audio line using an RGB LED to transmit over fiber and maybe a prism with three photoresistors or phototransistors at the other end? DIY multiplexing!
rlrsk8r1
I don`t said it`s not possible to send audio data via air or any other medium that you wrote.
Just that the signal inside is other type.
I did this years ago, but i used a lm386 instead of a transforme.
Radio Shack is gone *sniff
KRKATANAKID bankrupt they are still around just not a lot of them
Gabriel Rosales All of them in my town just closed on Tuesday *sniff (On a brighter note got a Proline soldering iron for $15 :D)
There is only 1 in all my area left because its in a mall but im guessing they are going to close pretty soon
Gabriel Rosales They even closed up in Mall of America in Minneapolis. I would've figured it would of been one of the last to go considering the foot traffic.
well we still have Frys Electronics not as good for components but great store
Yea, this is a cute toy. But how about some file transfer using laser? Just like Li-Fi, LASER should be able to do it and I was thinking: fiber optics use covered glass, so there is no outside light interference, but the "wire" isn't cheap, so how about I use 2 lasers and 2 photoresistors to make an RJ45-like end to send and receive data and another RJ45-like end to send and receive data. That might actually make some sense for a cheap diy wireless (more secure than Wi-Fi) solution.
Try something like a Spyder 3 laser pointer. Or link them together?
Would people be able to copy this ina a portable form ? And could one feel if it if someone aims it at you.
Need a stronger laser, then would be cool to send my tunes to my garage.
So apparently he lasered his face off for reals. Smart guy.
You'll find out if Michael still has a face in our DIY Power meter episode...
patrick norton hey patrick, were you there when it happened? at what point was he like, "yeah, this is a genius idea...who needs razor blades?"
Could I do fiber optics with this?
why don't you use solar panels...(small in size) because they almost work as same as this photo resistor
I made this and I can't see the laser modulate. Does that mean that it's not working? I wired it up exactly like the picture from sci-toys. I'm confused.
would this work with regular LED light? saw a guy that transmitted his internet connection through LEDs on TED Talks
Why not use a KERR cell that would modulate the LASER for you.
Man they should have used something a bit more powerful then a 5mW> red laser....... SO BORING!!. Smack a 3,000mW> blue laser in that bad boy and tell me if you can send music half way across the town :D
I made hydrogen in high school with water and electrolysis and freaked an old timer out with it.... blew his mind you can make fire from water lol
Hey Guys love the show,,,, PATRICK I miss u dude!!!!! when I first saw u I said 2 myself ,, hey its Patrick "I can overclock (blow UP!!! LOL) anything" Norton hehehe yea I watched you on TSS with Leo and Kate,, super good show,, you did an awesome job of showin us how its done lol. well just a quick note on this vid,, don't mean 2 b picky,, but I don't see where a carrier is generated (approx 3:12) basically the frequency and the amplitude are modulated from nothing (silence = no voltage) then they are both modulated with the audio. You would need some sort of AM or FM transmitter to induce a "carrier" and then would thus be listening to "RF" instead of "AF" (radio vs audio frequencies) so unless you had a RF to AF decoder on the other rend you would actually hear that carrier using the same receiver you have
it literally took me 8 videos for me to notice his last name is hand XD
Why do you have aquarium salt in the background?
Christian Swogger Its probably for the shark
where are you guys from
try putting a zener diode across the laser
What happens if this shot at someone's head?
:D I have those monoprice headphones.
can you revers this to be able to pick up sound with the laser????
Go to householdhacker he has a video on how to pick up sound
lol. 100% awesome!
very cool
Nice. Now, step up to digital audio. :)
sci-toys is my Favorited website too. i have won so many science fair because of that website.
...nice
So this didn't work. The laser doesn't modulate u p and down.
dude it works --'
the low brightness vs high brightness effects the photo cell at the frequencies of the music...
rlrsk8r1 I found the problem. It takes a fairly powerful AF signal to modulate the signal. My mp3 player or tablet can't do it from their headset jacks. My old 90's boom box can. Or, you can build an amplifier circuit like a non-inverting op-amp or use a JMC386 audio amp.
digital fiber optics
WTF people say this is easy?
sweet segway into a stupid advertisement
kinda disappointing video the last part of the video should be the most epic but you guys peaked at like 3 mins then talked the rest You make good vid and have good chemistry with eachother but show some real results spend some extra money and buy a bunch of lasers of different wattages..make it legitimate
Way too much time on that boys hands... somebody needs to get outside and enjoy the world a bit more.
First
Cool show horrible annoying music and sound effects GET RID OF IT FFS
b