I new to ardunio and your step by step style of describing your developing ideas is just the way to do it for us here. I have learnt more from your one video than 10 of the last videos I have watched .....keep it up mate
Cool. This brings back happy memories of my speech communication experiments over a beam of torch light. Considering that it was just a standard torch bulb in a reflector, the sound quality was surprisingly good. Keep up the good work bro :) .
Also sent audio through the ground, amplifier + two pieces of copper tube to send, hich impedance headphones with croc cips to receive, got about 50 yards.
Really great project and you will have spares as well. I was astonished when you plugged it in with all parts powered up and was really wanting to hear the best of the fidelity, with some ~100hz Subbed and parts are on the way. Looks like focusing won't be an issue at distance. and you can wirelessly send out some music to your livestock as they visit the watering trough. Best one i have seen all week!
Excellent work! Do you have plans on going further into sending / receiving data? Perhaps use Raspberry Pi's at each end, still using serial ports, then run PPP over serial to have a proper IP connection. So the laser would be layer 1, PPP would be layer 2 then IPv4 layer 3, etc...
Awesome. Thanks for sharing. Most probably the reason it didn't work at short range when you were pointing it directly at the receiver was that the signal was so strong it was saturating the receiver even for low part of the (amplitude) modulation. This wasn't an issue at longer distances. Same happens in RF so. But you already know all of this :)
I think the reason why it doesn't work very well at close range when pointing right at the detector is due to light saturation. When it's farther away the detector is seeing every single change in the small pulses of light. When it's up close like that, there will likely be very small forms of attenuation and reflection happening which interrupt the pulses as seen by the detector and sort of wash them out. This is why, for these kinds of applications, optical fiber is used instead of a pure beam. It can go much further through that as well.
I think the laser may be overloading the sensor when you're pointing it at at at close range. That round shape on the front of the sensor is a "built-in" lens to direct the light in to the sensor. Those particular sensors were never meant to detect laser light. Just a guess, but I suspect that's what was happening.
I did a variant with IR remote control detectors, requires a carrier and full on/off pulsing to "train" the internal AGC - just need a carrier of the receiver's specific frequency modulated on it. ESPs have a pretty good internal block to do this directly. This method knocks down the potential bandwidth to just a fraction of the carrier frequency, but the upside is that it's much more resistant to interference (lowering digital bit-errors). I can bounce off a building (not into a window but a solid surface, typically concrete) for "non-line of sight" links using a spotter's scope for the IR receiver, with this I can transmit data >5 miles using a fairly low power TTL IR laser module. Another copy on the other side makes it a bi-directional serial link.
Man, I SO wish this could go further. I need to get internet to my parents house few miles away (no options) and can't figure out anything that isn't cost prohibitive or sucks.
As you know exactly how often you'll send/receive serial input you could put the code to change "theByte" in a timer interrupt instead of the loop function. That should fix the issue with the sound play-back speed, though it would make the code more complicated
Hey this is great! I would like to ask where you can get the module that has the SD card inside. As well as how you connected your other arduino to speakers. Thanks ahead!
I also only used the arduino to power the light sensor - I sent analogue audio waves with a “custom” wiring from the TTL/PWM module and a head phone amp to get into the tolerance range as its USB lvls which also happen to be about the max V out on a set of phones signal - so it’s fully analogue - on the light receiver side i wired the sensor into a powered video microphone and fed to a reel to reel tape deck just to be extra analogue
Nice practical example. That reminds me quite old czech electronics book and there was ligtbulb and big lens instead of laser. Now we can do this magic for few dollars on hundred meters. Some downsampled wav sound could be improved if you disable dithering during conversion. Sox or Audacity is doing that in default. But strange noise artefacts cas appear sometimes. Fellow videoblogger
Kinda cool, you could perhaps attach a mirror to a window and shine the laser into the mirror and if you could get a line up on the returned bounced dot use it as a form of "remote microphone".
Thanks for the video I got this to work just fine. Though at first I had trouble converting one of my audio files to the correct format. Here are the terminal commands I used on Ubuntu (using WSL on windows) you can install with "sudo apt-get install mplayer sox" then run these commands "mplayer -ao pcm input.mp3" "sox audiodump.wav -c 1 -r 8000 -b 8 -e unsigned-integer output.wav"
Wonder if FPV could be transmitted over it, could put it on your front fence to meet visitors before remote opening the gate. What sorta bandwidth ranges do FPV systems typically work with? What's cool about it is that unlike radio stuff, the bandwidth can be doubled/tripled/etc by just adding more lasers and sensors. More and more laser pixels, eventually you approach a point where you're transmitting with the laser equivalent of a projector, and receiving with the equivalent of a high resolution camera with a telescope. Hmm... actually laser projectors are already a thing... i wonder...
+iforce2d I wonder if it is possible to make a noise helmet with an arduino (or raspberry pi). I know the physics behind this technology. But I ask myself a lot of question on how to analyze and then send the sound in phase opposition of external noise. Does anyone have any advice? How to analyze sounds? Should I use an arduino or a raspberry pi?
8000Hz is just the frequency of the audio sample in this case. The serial connection itself is 115200 baud which I think is as fast as the arduino can do. I don't know what the limit of the laser detector would be.
Hi, may ask if (and how much) the daylight does interfere on the receiver? The first test you've done seem being done in normal daylight while the later ones seem to have been done in evening light. I've read on the products description that using them in the dark is recommended.
I’ve sent audio using the arduino light sensor and the TTL/PWM on the laser router through a head phone amp - i run a couple sets - one that is on or off at threshold and the other is the entire sound wave - when those low 808s hit it looks pretty wild with transients on the others without PWM
The brass thingy on the laser has a lens and rotates for beam adjustment, you could trim it a bit and probably get several kilometers of range :p I think the receiver PCB might be making it harder to archieve higher baudrates, as it seems to be a repurposed ds18b20 temperature sensor board. Cool video, thanks a lot. Gonna experiment a bit with fiber.
I would say that when it's pointing at the front there is too much power, maybe a voltage divider to attenuate the power to the 5v input for close range?
Great video. You captured my 6 year old's attention so now I need to order a couple of these so we can experiment... Just curious I noted that on banggood's site they claim the receiver is susceptible to interference. Did you happen to try it outside with the sun up further, and if so, how reliable was it?
if you directionaly light shield the sensor with a tube parallel to the laser id say you would get longer range again because the ambient light on other axis would have less sensor saturation impact making the digital differential easier to distinguish
Burning hand joke - man, you got me ! LoL !!! Would have been interesting to hear voice transmission. But i guess from what i heard (music) it would be no problem. Nice Video, interesting project !
Excellent. I was looking at at UHF one-shot for short range data transfer between a workshop and office. HC-12s are not an option sadly... I reckon this might be the way forward. gonna play, but as it over-flies other peoples properties, I am going to tweak it so it isn't "marking" all the time... the pulses will be short enough that no-one should notice ;)
I'm pretty sure this laser stuff can do SPDIF as well. That's CD quality audio :) I guess I'll find out as soon as the parts arrive, since I just ordered them :D
I think that when you point the laser direct at the sensor the light is too bright and it clips, or the difference between the normal light and the beam is'nt big enough
I keep getting an error message “avrdude: stk500v2_RecieveMessage(): timeout” in the receiver side although I checked the port and board in tools menu, what causes this error? Knowing that I am using Arduino Mega
Hi, thank for sharing. I added this to my ever expanding things to do list. I am not sure my suggestion is going to work with lasers, but in RF/ line transmission engineering, you can increase the range by reducing the data speed.The Voyager1 space craft I believe started off a 115kbps at Jupiter, but its last comms was about 1k4bps only because the transmission system can't go slower. So if you want to try to increase the range drop your data rate to a low rate, but faster than 64,000bps
I have purchase the KY-008 laser with the associated sensor board. For my project I only need the 3 pin sensor but I'm unable to identify it, and I can't seem to find any references to it on all the sites that are selling it. Does anyone know the Mfr and Part Number of the detector which inserts into the 3 pin socket? Thanks!!!
No need to use the Audio output Sketch, i have used this sketch for the output audio: int buz = 11; // Buzzer or Speaker connected to digital pin 11 int inPin = 7; // The input signal from receiver connected to digital pin 7 int val = 0; // variable to store the read value void setup() { pinMode(buz, OUTPUT); // sets the digital pin 11 as output pinMode(inPin, INPUT); // sets the digital pin 7 as input } void loop() { val = digitalRead(inPin); // read the input pin digitalWrite(buz, val); // Set the read value in the output } P.s: Sorry for bad english, i tryed my best :)
nice! wouldnt it be possible to make an easy + cheap fpv lap timer based on those components? maybe add 2-3 receivers and a diffusor to the emmitting diode?
Hi I just noticed your channel and you talk and show really cool. I subscribed. Are you in the UK ? I'm in The Netherlands. If you wanted to send computer-files over via the laser you could write a program that checks CRC32 or MD5 and then resend per so many bytes. You say the tractor is on google maps. Do you mean it constantly updates its position online over GPS ?
Yeah, that would work if you had a second laser going back in the other direction to request resends. That tractor never moves. The farmer uses the engine of the tractor to power a water pump.
Hi really nice video, i want to use the laser sensors to create a piano like the one in the movie big, but i will built in in a stairs , do you think sensors like those will be enough for 5 meters distance?
Hi there iforce2d! great video and trully inspired. Im an electrical engineering student and wanted to follow your tutorial build to build this as it is the easiest way so far. Can you please name me the 2 cpu's that you used and the parts you used? Would be really appreciated!
So, I need a .wav sound file, but what bit resolution, sampling rate and audio channel should I use??? make.robimek.com/wp-content/uploads/wav-setting.png Can u upload the file you transferred. I edited the code as you showed and built the circuit but I doesn't work, even with a wire between the [Tx &Rx] and Gnd to Gnd? what would be the proble, @iforce2d
Now it's time to relay the signal back to the house from the tractor with a mirror and have a water level switch on water trough tell you that it's low on water! The mirror simply connects to a float and it pushes the mirror in the right angle to transmit the music to alert you
+muh1h1 I had once pondered something similar,to do wireless toslink/spdif transmission over a fair distance. I had also wondered about using an IR laser module,so it wouldn't be visible to the naked eye.
I believe you weren't far off with the saturation assumption. If the receiver is blasted with so much light, it takes longer to bleed off the charge inside the semiconductor, and such the serial protocol gets all mangled.
This project could be done with purely analogue electronics and achieve HIFI sound. Using the same techniques IR remote control receivers use, combined with that laser would give you some serious range :-) Miles?
Hagledesperado Digital as in on/off but you can use pulse position modulation and modulate the time between pulses by the audio. I did this many years ago with IR LED's and the range indoors as well as sound quality were excellent, cheap laser diodes were not available then :-(
Now get a higher power laser to shine 10 km and point your red one slightly off parellel to it so the beams cross within 5 meters and see if it grabs onto the music signal and relays it through the stronger laser !
This video.. I'm.. ecstatic! I love you! lol.. well, this song, ever since I heard it for the first time.. the original, I've had goosebumps all over.. I've even talked with Alan Walker about both Fade and Faded how much it affects me and how much I love them.. I don't know what it is, but these two songs are like drugs are for those who take those.. Nothing can make me feel so well as those two songs, really nothing! I listen to at least one of them every single day since they were released, crazy? ;) haha Anyhow, laser and laser transmission is so awesome and you combine it with the best possible song.. If it were up to me you would win an Oscar just for this video alone =D Great video and thanks for sharing! =)
Oh and have you thought about optical/toslink anything? Its very similar, but I think - I don't know - it uses leds instead of laser? Even if lasers these days mostly are leds as well, if I've understood correctly. Anyhow, I've been wanting to get some toslink connectors and well, do exactly what you did in this video.. But they are so hard to find, extinct? and they are usually a lot more expensive. I will get some of these laser versions instead, as it seems to be the exact same thing, just without the optical cable in between ;) I guess you could use a toslink cable between as well, but would be hard holding it in place without some sort of connector of course.
It's probably 15yrs ago I bought a new motherboard and didn't know I was supposed to buy an adapter to get optical spdif out, well I put red led on spdif pins and pointed it to the optical fibre and it worked. Dolby digital!
Alan Walker - Fade (feat. Arduino)
(feat. Arduino and Senzor & Lazor)
@@BGroothedde 😂😂😂😂
I new to ardunio and your step by step style of describing your developing ideas is just the way to do it for us here. I have learnt more from your one video than 10 of the last videos I have watched .....keep it up mate
Cool.
This brings back happy memories of my speech communication experiments over a beam of torch light.
Considering that it was just a standard torch bulb in a reflector, the sound quality was surprisingly good.
Keep up the good work bro :) .
So did I, 12 years old, 1962
Also sent audio through the ground, amplifier + two pieces of copper tube to send, hich impedance headphones with croc cips to receive, got about 50 yards.
@@jonrome2839
Those kinds of experiments never lose their special appeal :) .
Great video! I really enjoy how you explain your builds and use creative ways to demo these gadgets.
I Keep searching random things and this guy's videos keep coming up. You have some really good videos
you can listen in on conversations from long distances by measuring the vibration off the window pane and modulating that into a sound signal.
Haha I love how you justify getting those parts! Just playing around and experimenting, because it's fun! Great video as usual :)
That will come in useful at some point.
I will probably forget this exists.
Really great project and you will have spares as well. I was astonished when you plugged it in with all parts powered up and was really wanting to hear the best of the fidelity, with some ~100hz
Subbed and parts are on the way.
Looks like focusing won't be an issue at distance. and you can wirelessly send out some music to your livestock as they visit the watering trough. Best one i have seen all week!
Im not sick of hearing this sound, Im just amazed. Good job dude
Excellent work! Do you have plans on going further into sending / receiving data? Perhaps use Raspberry Pi's at each end, still using serial ports, then run PPP over serial to have a proper IP connection. So the laser would be layer 1, PPP would be layer 2 then IPv4 layer 3, etc...
Awesome. Thanks for sharing. Most probably the reason it didn't work at short range when you were pointing it directly at the receiver was that the signal was so strong it was saturating the receiver even for low part of the (amplitude) modulation. This wasn't an issue at longer distances. Same happens in RF so. But you already know all of this :)
I think the reason why it doesn't work very well at close range when pointing right at the detector is due to light saturation. When it's farther away the detector is seeing every single change in the small pulses of light. When it's up close like that, there will likely be very small forms of attenuation and reflection happening which interrupt the pulses as seen by the detector and sort of wash them out.
This is why, for these kinds of applications, optical fiber is used instead of a pure beam. It can go much further through that as well.
This is so cool!
uw channel is ook cool
I think the laser may be overloading the sensor when you're pointing it at at at close range. That round shape on the front of the sensor is a "built-in" lens to direct the light in to the sensor. Those particular sensors were never meant to detect laser light. Just a guess, but I suspect that's what was happening.
I did a variant with IR remote control detectors, requires a carrier and full on/off pulsing to "train" the internal AGC - just need a carrier of the receiver's specific frequency modulated on it. ESPs have a pretty good internal block to do this directly.
This method knocks down the potential bandwidth to just a fraction of the carrier frequency, but the upside is that it's much more resistant to interference (lowering digital bit-errors). I can bounce off a building (not into a window but a solid surface, typically concrete) for "non-line of sight" links using a spotter's scope for the IR receiver, with this I can transmit data >5 miles using a fairly low power TTL IR laser module. Another copy on the other side makes it a bi-directional serial link.
Man, I SO wish this could go further. I need to get internet to my parents house few miles away (no options) and can't figure out anything that isn't cost prohibitive or sucks.
As you know exactly how often you'll send/receive serial input you could put the code to change "theByte" in a timer interrupt instead of the loop function. That should fix the issue with the sound play-back speed, though it would make the code more complicated
i did everything u said but no sound is coming out when i hit the laser to the receiver.help!
Hey this is great! I would like to ask where you can get the module that has the SD card inside. As well as how you connected your other arduino to speakers. Thanks ahead!
I also only used the arduino to power the light sensor - I sent analogue audio waves with a “custom” wiring from the TTL/PWM module and a head phone amp to get into the tolerance range as its USB lvls which also happen to be about the max V out on a set of phones signal - so it’s fully analogue - on the light receiver side i wired the sensor into a powered video microphone and fed to a reel to reel tape deck just to be extra analogue
if you can set your camera to PAL or 25/50hz it'll get rid of that flicker - curious what the frequency responce of the detector is.
Awesome video!:-)
PS: You could try to use this with fiber optic wire
That is pretty much how fibre optic works.
Nice practical example. That reminds me quite old czech electronics book and there was ligtbulb and big lens instead of laser. Now we can do this magic for few dollars on hundred meters. Some downsampled wav sound could be improved if you disable dithering during conversion. Sox or Audacity is doing that in default. But strange noise artefacts cas appear sometimes. Fellow videoblogger
Very nice project. I like it a lot. Thanks for sharing it.
Kinda cool, you could perhaps attach a mirror to a window and shine the laser into the mirror and if you could get a line up on the returned bounced dot use it as a form of "remote microphone".
Thanks for the video I got this to work just fine. Though at first I had trouble converting one of my audio files to the correct format. Here are the terminal commands I used on Ubuntu (using WSL on windows) you can install with
"sudo apt-get install mplayer sox"
then run these commands
"mplayer -ao pcm input.mp3"
"sox audiodump.wav -c 1 -r 8000 -b 8 -e unsigned-integer
output.wav"
You could try to focus laser's ray with some lenses near receiver and it should sound great even in further distanses.
After a PWMDAC, a small RC low pass filter could enhance the output for smoother response.
it would be interesting to see full asynchronous communications between two nodes.
I think I will grab a few of these modules to detect if there is a car in the way for an IoT garage door opener/closer.
Wonder if FPV could be transmitted over it, could put it on your front fence to meet visitors before remote opening the gate.
What sorta bandwidth ranges do FPV systems typically work with?
What's cool about it is that unlike radio stuff, the bandwidth can be doubled/tripled/etc by just adding more lasers and sensors. More and more laser pixels, eventually you approach a point where you're transmitting with the laser equivalent of a projector, and receiving with the equivalent of a high resolution camera with a telescope.
Hmm... actually laser projectors are already a thing... i wonder...
I LOVE DAT SONG😍
You've gained a sub for choosing faded
And good tutorial btw
+iforce2d
I wonder if it is possible to make a noise helmet with an arduino (or raspberry pi).
I know the physics behind this technology. But I ask myself a lot of question on how to analyze and then send the sound in phase opposition of external noise.
Does anyone have any advice? How to analyze sounds?
Should I use an arduino or a raspberry pi?
Could you reduce the voltage going to the laser for short range and increase for long?
Either way.. this is awesome!
I had same idea weeks ago its amazing to know that really works! Is 8khz the max frequency? Is it limited by arduino or laser transmitter/receiver?
8000Hz is just the frequency of the audio sample in this case. The serial connection itself is 115200 baud which I think is as fast as the arduino can do. I don't know what the limit of the laser detector would be.
:') Your Amazing! I've been looking for ways to do this, and you helped so much!
Hi, may ask if (and how much) the daylight does interfere on the receiver? The first test you've done seem being done in normal daylight while the later ones seem to have been done in evening light. I've read on the products description that using them in the dark is recommended.
Don't know sorry. I think a cloudy day would be ok (as in the earlier part of the outside section of this video), but a sunny day might not be.
I’ve sent audio using the arduino light sensor and the TTL/PWM on the laser router through a head phone amp - i run a couple sets - one that is on or off at threshold and the other is the entire sound wave - when those low 808s hit it looks pretty wild with transients on the others without PWM
The brass thingy on the laser has a lens and rotates for beam adjustment, you could trim it a bit and probably get several kilometers of range :p I think the receiver PCB might be making it harder to archieve higher baudrates, as it seems to be a repurposed ds18b20 temperature sensor board. Cool video, thanks a lot. Gonna experiment a bit with fiber.
I would say that when it's pointing at the front there is too much power, maybe a voltage divider to attenuate the power to the 5v input for close range?
Great video. You captured my 6 year old's attention so now I need to order a couple of these so we can experiment... Just curious I noted that on banggood's site they claim the receiver is susceptible to interference. Did you happen to try it outside with the sun up further, and if so, how reliable was it?
+jphgross haven't tried it in the sun yet, but a small tube to cover the receiver might work. With one end open at the incoming end I mean.
+iforce2d Thanks. that crossed my mind as I was asking. I have them on order. :)
if you directionaly light shield the sensor with a tube parallel to the laser id say you would get longer range again because the ambient light on other axis would have less sensor saturation impact making the digital differential easier to distinguish
Would this work with a live sound stream. Mic level signal to First unit and then a speaker at the other unit?
I would imagine if you added lens assemblies to the emitter and the receiver, you could really add to the range.
Love your work!
Amazing results from such cheap parts !! ;)
Burning hand joke - man, you got me ! LoL !!! Would have been interesting to hear voice transmission. But i guess from what i heard (music) it would be no problem. Nice Video, interesting project !
I wonder what the absolute maximum range of it is, I also wonder if you could jerry-rig it to a stronger laser.
what if you would use a fiber wire to between your transmitter and receiver?
Excellent. I was looking at at UHF one-shot for short range data transfer between a workshop and office. HC-12s are not an option sadly... I reckon this might be the way forward. gonna play, but as it over-flies other peoples properties, I am going to tweak it so it isn't "marking" all the time... the pulses will be short enough that no-one should notice ;)
I'm pretty sure this laser stuff can do SPDIF as well. That's CD quality audio :) I guess I'll find out as soon as the parts arrive, since I just ordered them :D
does it?
glad to help :D
dan can't you use nrf24 for it and have more range?
I think that when you point the laser direct at the sensor the light is too bright and it clips, or the difference between the normal light and the beam is'nt big enough
I keep getting an error message “avrdude: stk500v2_RecieveMessage(): timeout” in the receiver side although I checked the port and board in tools menu, what causes this error? Knowing that I am using Arduino Mega
"Are you sick of this song yet?"
Actually. No, I quite like it. Better than this TH-cam "music" that is in every second video...
+LeoDJ th-cam.com/video/bM7SZ5SBzyY/w-d-xo.html
Plenty more good stuff on that channel too
Hi, thank for sharing. I added this to my ever expanding things to do list. I am not sure my suggestion is going to work with lasers, but in RF/ line transmission engineering, you can increase the range by reducing the data speed.The Voyager1 space craft I believe started off a 115kbps at Jupiter, but its last comms was about 1k4bps only because the transmission system can't go slower. So if you want to try to increase the range drop your data rate to a low rate, but faster than 64,000bps
Tell us about your things to do list. It sounds interesting.. what have you been up to since this comment my bro??
Did you ever try using a lens at the receiver end to collimate the spread
LASER beam ?
I have purchase the KY-008 laser with the associated sensor board. For my project I only need the 3 pin sensor but I'm unable to identify it, and I can't seem to find any references to it on all the sites that are selling it. Does anyone know the Mfr and Part Number of the detector which inserts into the 3 pin socket? Thanks!!!
i boght the same yellow board but , i cant conect it to my mac , even with some drives-- i conect it and my mac rebbots
can you help me?
is it possible to transmit audio with on-off keying modulation using this laser module
i would use IR instead of R color. Put filter infront of the receiver which will allow only IR passthrough to limit the interference.
No need to use the Audio output Sketch, i have used this sketch for the output audio:
int buz = 11; // Buzzer or Speaker connected to digital pin 11
int inPin = 7; // The input signal from receiver connected to digital pin 7
int val = 0; // variable to store the read value
void setup()
{
pinMode(buz, OUTPUT); // sets the digital pin 11 as output
pinMode(inPin, INPUT); // sets the digital pin 7 as input
}
void loop()
{
val = digitalRead(inPin); // read the input pin
digitalWrite(buz, val); // Set the read value in the output
}
P.s: Sorry for bad english, i tryed my best :)
nice! wouldnt it be possible to make an easy + cheap fpv lap timer based on those components? maybe add 2-3 receivers and a diffusor to the emmitting diode?
+scootersalih might work, but I think a RF-based method would be more reliable
Can you please upload somewhere the exact code that you used in this video ? (Im trying to do same think like you but I have no luck.....)
Hi I just noticed your channel and you talk and show really cool. I subscribed. Are you in the UK ? I'm in The Netherlands. If you wanted to send computer-files over via the laser you could write a program that checks CRC32 or MD5 and then resend per so many bytes. You say the tractor is on google maps. Do you mean it constantly updates its position online over GPS ?
Yeah, that would work if you had a second laser going back in the other direction to request resends.
That tractor never moves. The farmer uses the engine of the tractor to power a water pump.
oh yeah forgot this is one way direction :-) now I got what you meant with google maps and that tractor.
nice choice in music
Did you make any changes in the code after installing the laser sensor? I couldn't work together with the laser sensor
I would like if this laser can be used as a fence to activate an alarm? this in a large field than you in advance
Could you kindly tell me the specifications of the solar cell ?
I find this highly exciting.
Omg. It is pure madness. I love it.
Coud your "theBYTE" be an input from a dac to convert voice to a digital signal?
hello i am a newbie so can i get a little detail of how you get music from sd card and other basic stuff detail
Hi really nice video, i want to use the laser sensors to create a piano like the one in the movie big, but i will built in in a stairs , do you think sensors like those will be enough for 5 meters distance?
I don't know exactly what you mean, but as you can see in the video the laser reaches 140 meters so I don't see why 5 meters would be a problem.
how about to use the laser as a return to home beacon for an aircraft of some kind.
Nice experiment! Thanks
Would be cool to use it as a sound modem
Would you tell me that how to transmit text using PS2 keyboard and display the text on LCD using LiFi Technology ?
Super cool video
Hi there iforce2d! great video and trully inspired. Im an electrical engineering student and wanted to follow your tutorial build to build this as it is the easiest way so far. Can you please name me the 2 cpu's that you used and the parts you used? Would be really appreciated!
they are both arduino uno
we have not receiver module.Can we use ldr instead of it and how we use it.we have 5mm,10mm ldr
imagine if every streetlight emitted music like this
I think you can increase its range if you focus it on recieving
So, I need a .wav sound file, but what bit resolution, sampling rate and audio channel should I use???
make.robimek.com/wp-content/uploads/wav-setting.png
Can u upload the file you transferred.
I edited the code as you showed and built the circuit but I doesn't work, even with a wire between the [Tx &Rx] and Gnd to Gnd?
what would be the proble, @iforce2d
Pretty sure I covered those details in this video somewhere - the file is linked to in the comments here already somewhere.
Sir, can I have the circuit diagram for both (TX and RX)
Now it's time to relay the signal back to the house from the tractor with a mirror and have a water level switch on water trough tell you that it's low on water! The mirror simply connects to a float and it pushes the mirror in the right angle to transmit the music to alert you
you could put a toslink cable in between there :)
+muh1h1 I had once pondered something similar,to do wireless toslink/spdif transmission over a fair distance. I had also wondered about using an IR laser module,so it wouldn't be visible to the naked eye.
I see some lasertag usage for these parts... would be pretty easy to make...
I believe you weren't far off with the saturation assumption. If the receiver is blasted with so much light, it takes longer to bleed off the charge inside the semiconductor, and such the serial protocol gets all mangled.
What takes the credit? the quality of the laser or the sensor?
This project could be done with purely analogue electronics and achieve HIFI sound. Using the same techniques IR remote control receivers use, combined with that laser would give you some serious range :-) Miles?
I thought IR remote signals were digital?
Hagledesperado Digital as in on/off but you can use pulse position modulation and modulate the time between pulses by the audio. I did this many years ago with IR LED's and the range indoors as well as sound quality were excellent, cheap laser diodes were not available then :-(
Now get a higher power laser to shine 10 km and point your red one slightly off parellel to it so the beams cross within 5 meters and see if it grabs onto the music signal and relays it through the stronger laser !
hey !!!! I want to know That Did you try This project a sunny day under the sun
that what we call as 'fiber optic' or diy 'optical cable'.
Laser pointers purchased over the net mixed with audio ..
Im happy for you.
This video.. I'm.. ecstatic! I love you!
lol.. well, this song, ever since I heard it for the first time.. the original, I've had goosebumps all over.. I've even talked with Alan Walker about both Fade and Faded how much it affects me and how much I love them.. I don't know what it is, but these two songs are like drugs are for those who take those.. Nothing can make me feel so well as those two songs, really nothing! I listen to at least one of them every single day since they were released, crazy? ;) haha
Anyhow, laser and laser transmission is so awesome and you combine it with the best possible song.. If it were up to me you would win an Oscar just for this video alone =D Great video and thanks for sharing! =)
Oh and have you thought about optical/toslink anything? Its very similar, but I think - I don't know - it uses leds instead of laser? Even if lasers these days mostly are leds as well, if I've understood correctly.
Anyhow, I've been wanting to get some toslink connectors and well, do exactly what you did in this video.. But they are so hard to find, extinct? and they are usually a lot more expensive.
I will get some of these laser versions instead, as it seems to be the exact same thing, just without the optical cable in between ;) I guess you could use a toslink cable between as well, but would be hard holding it in place without some sort of connector of course.
Just finished watching the video.. Nope, not tired of it yet ;)
It's probably 15yrs ago I bought a new motherboard and didn't know I was supposed to buy an adapter to get optical spdif out, well I put red led on spdif pins and pointed it to the optical fibre and it worked. Dolby digital!
How interesting! Never used spdif, but cool that it was just so simple =)
Of course you could possibly use a reflective dish to concentrate laser back to a point
Awesome, was the song "Rome" by Phoenix?