How It Works - Infrared Remote Control
Ғылым және технология
In this video I try to briefly explain how infrared remote control works. This video was inspired by my last two projects, both involving IR remote controls. This isn't a comprehensive description, but it does explain the basics.
Music track:
"Hustle" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
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Пікірлер: 100
So concise, so comprehensive. Thank you. I've been looking for those tiny bits of precise info, which you can get by watching hours of tutorials here and there.
@Littlewing6was9
5 жыл бұрын
Its like finding a crucial piece of the bigger picture jigsaw
Why is this channel not getting 100 millions subscribers? This is good video, this is good information. It's lame how crappy videos get thousands of views in one day and million of subscribers, but the good ones are doomed in obscurity.
Incredibly much of crucial info on onfrared control in such a short move. Excellent!
This video is awesome! I love it! You explained everything very clearly
Nice explanation. Reminds me of morse code in parts.
@RickOsgood
10 жыл бұрын
Thanks! It kind of is like that with shorter pulses and longer pulses.
I was looking for 10 mins for a video, this explained it perfectly (Thanks !)
that was freaking awesome the code part was like DNA sequences we had in school and college keep going man
helps me a lot even in short presentation !! thanks !!
very neatly explained thanks man
Thanks!! You saved my life. I have a Science Project next week.. Thanks a lot :)
this blew my mind. thanks!
It's very helpful, thank you!
that was really helpful... Thanks, man
Best explanation
hey Rick can you tell me if we put more ir bulbs to a remote control will it increase the range please reply....
Great video, question? I have several small 3.7 volt helicopters like the ones in this video, at the end, with no remotes that match them so that they work. Is it possible to alter the frequencs of the ones I have, to math the helicopters, so that they will work? Thanks, any help would be appreciated.
Great tutorial thank you... John :)
Nicely explained
So can I use a fiber optic wire to curve the ir and deliver the ir through a brick wall?
this is very helpful :)
superb but were did purchase and it is used to high power current also
Sweet video
Thank you!
Wow thx I can now do a simple demo tomorrow at class
Very helpful :D
If I would remove the ir transmitter and ran a wire from those 2 pads and hooked the other end of the wire to the ir receiver would that work. Basically hard wiring it?
very usefull information
Great video. What would happen if you added a few IR bulbs to a RC helicopter control? Would it gain range? Would it gain directional signal?
Thank you
Thank u very much..................
but how the television is made to pick up only 38khz infrared? and how can it interpret those signals to do something specific?
can u show how u make the remote controll of helicopter using ir sensor
thank you
Hi, may I ask, how are IR remotes able to reach long distances? For example, my TSOP IR receiver receives my TV remote's signals from far away, even if I am pointing away from the signal. May I ask how is this possible? I am intending to create a button that sends out a signal like my TV remote's signal, but I don't know how to make my IR signal stronger..
Question: from what you presented, is it possible to design an infared remote to change the channel, song, volume etc. that is playing ON your phone/tablet instead of using a Bluetooth remote/keyboard?
@khaderb00
8 жыл бұрын
If your phone/tablet already has an IR transmitter feature then it's possible
This video is easy to understand Thx 🙏 I feel like my science project got way easier Also whoever disliked the video is a wuss
very nice video! I have a couple questions, I hope someone will answer. 1- you said tipycally the IR freq of a tv is 38 khz. But since a sony remote control will not work with a toshiba tv, this means that some one uses 38, some 37, others 39 right? A universal remote control will work with each tv because is able to transmit in a wider IR frequency range?
@RickOsgood
10 жыл бұрын
The reason the Sony remote does not work on a Toshiba TV has nothing to do with the frequency, actually. It has to do with the way the binary code that's transmitted. Different manufacturers use different protocols or codes. Your Sony remote flashes at 38KHz a code that the Toshiba TV doesn't understand, so the TV just doesn't respond. The universal remote knows the right codes for many different TV's. But it's most likely always going to modulate at 38khz. Does that make sense?
this is very helpful, thanks a lot. But I still have a question that if I have a general IR remote control that flashes an IR signal with 38khz, and had two devices that are designed to respond to 38khz, will they both work if I pushed a certain button ? and let's say that I didn't know that information, how will I know which one of the two devices is going to work ?
@RickOsgood
8 жыл бұрын
If you have two devices that are the same make and model, then they most likely will both respond to a single button press. The 38khz pulse is a just a carrier signal. On top of that, the remote transmits an address code and a command code. Let's say you have a Sony TV and a Sony sound system. They would both likely use the same command for "power on/off" because they are both Sony. However, your remote will first transmit the address of the device. If the address is for the TV, then the TV knows it needs to respond to the command. The sound system will ignore the command because the address doesn't match.
@Littlewing6was9
5 жыл бұрын
IoT tech?
And how does the sensor work? In programming a query is only in one moment in time (extremely short). How can it scan at any moment in time for any duration? I'm a beginner engineer and I had that problem recently
Thank you for this video. I have a question though. For a school project I am trying to built a device which is located on the ceiling and could alert on whether an object (non moving) is within the radius of 1 meter in all directions. It should be very small and cheap (less than 5$) so any solutions like radar or laser scanning is out of the question, so I left with the ultrasonic and infrared possibilities, but due to budget and size limitations i need to use as few sensors as possible. I have tried to make some measurements with infrared transmitter and receiver in the same housing but so far Ive been able to detect only objects in the range of about 15 cm, and pretty much only if it is perpendicular to the sensor. I have used all kinds of IR emitters with different radiant intensity and with different current values but I could not significantly increase the range and the beam detection angle my question is how could I increase the range and angle? I check the IR detector with a normal TV remote control and i see that the range could reach up to 5 meters and the detection angle is very large. is the IR transmitter in the remote control is amplified? and if so, how? with optical lenses or with electronic components? sorry, it got a bit long Thank you :)
@RickOsgood
10 жыл бұрын
Your project is a bit over my head. I don't believe the IR LEDs inside of TV remote controls are amplified. It's just an LED in the end of the remote. I'm not sure what IR transmitter and receiver you were using for your sensor, but maybe it works off a different principal than the TV remotes?
@shaharl3
10 жыл бұрын
Rick Osgood I see, i will keep on researching. thanks for your prompt reply.
U blew my mind
please give me the solution to control AC using raspberry pi and lircd lib, please give me any link or code to control my onida AC in detail
Very interesting, I knew it used infrared light but wasn't sure how data was transmitted.. I suspected it would be like this, because it sounds just like "Li-fi" what some people predict will be the future of Wi-fi. What was really shocking is that the RC helicopter uses infrared, I thought it was some really low-power radio waves. Are all RC toys using infrared? How can the helicopter catch the light from a far??
Fantastic explanation, have you considered teaching or lecturing?!
this is a good video, but I have a question. is there a database or repository of codes used, or remotes matched with codes? I am interested in this project because I lack a remote for a piece of equipment, and obtaining a rare one will cost a stupid amount of money right now. I'd like to see if its codes are already known such that I could simply use them with this project without the learning decoding step.
@RickOsgood
4 жыл бұрын
I would start by looking for manuals, tech specs, or datasheets from the manufacturer of the specific device. I'm not sure if there is some large database of known codes.
Hi Rick hope you are well, I have just purchased a " Bigfoot toy " The remote control is missing! could I some how get another type of remote to work?... Many thanks... John :)
I have a question. What if the LED works but when you press it, it won't change the channel? (sorry for my bad english)
@heyYoTheresAGuyEatingMyRavioli
8 жыл бұрын
maybe you're too far from the receiver or it's probably being blocked by another object.
I know this sounds stupid but does this relate to controllers for video games (ps3,xbox) as well?
@LazsalzariRomnzevroskki
7 жыл бұрын
No they work with bluetooth
@joshfaye3300
6 жыл бұрын
Lazsalzari Romnzevroskki that does explain anything.. how does the remote connect to the Xbox??? How does blue tooth work???
@Xerkies
6 жыл бұрын
Josh Rhode probably similar but with sound frequencies.
@kemarwalker4271
5 жыл бұрын
Bluetooth is basically a small electronic chip integrated within a device emitting shirt ranged microwaves to another gadget
@LatteWiiU
5 жыл бұрын
There's an ir remote app that has Xbox one and the console receives ir
could you do more of these videos inwhich you explain about remote contorl and sound system in tv? many thanks. i also subscribed your channel
Hi, great video I am trying to reverse engineer a remote control for a helicopter toy like yours Can you give some information about how does it work or some sources ? Thanks
I KNEW IT. I EVEN FIGURE THIS OUT MYSELF. So some IR blasters have two IR lights. What the meaning of that?
inverter?
Rick, just subscribed. Great work. You said, 38khz means it flashes 38,000 times per second. How is that possible? Have you seen a video that explains how a remote or circuit creates that specific energy? If so can you send me the link?
@RickOsgood
8 жыл бұрын
maybe check out this link? hackaday.com/2011/02/16/38-khz-ir-communications-tutorial/ not sure if that's what you're looking for.
@calvinthompson8231
7 жыл бұрын
romanieo
@TheEloquentEye
7 жыл бұрын
That was what I was thinking, 38000 times per second is just insane.
Hi, can you elaborate on how to control the helicopter with the IR remote as I am exactly looking to do that. Thanks :)
@RajeshwarRudra
10 жыл бұрын
And I have a 4 channel helicopter, can a remote with single IR led operate that ?
@RickOsgood
10 жыл бұрын
Rajeshwar Rudra the "channels" probably just change which IR codes the helicopter listens for. This means tha it doesn't matter how many LED's there are. The more LEDs, the brighter the light will be and you can probably increase your distance this way. If you want to control the helicopter you would need to figure out what the IR codes look like coming from the remote control. You might be able to find this information online for your specific helicopter, or you can try to "record" them with an IR receiver and then reverse engineer it yourself.
@zaki160
9 жыл бұрын
hi ..who can i change the frequency at TX and RX
Okay then, how would i make a system consists of a IR remote transimitter and a reciver which respond to it..
@mikegLXIVMM
6 жыл бұрын
The device, such a TV, has a small module in it that does the job of processing the infrared signal from the remote. The output of this module is the data that the remote transmitted, but without the 38KHZ carrier, just binary code 0-5 Volts. Your application, say..Arduino, would just have to process the data. The pinout for the module is simple: +5 Volts, Ground, Signal out.
I've a remote control which IR led always stays on. When I press a button the receiver doesn't work. I've tried to clean up the button contacts, I've changed batteries, but nothing!
@RickOsgood
10 жыл бұрын
It does sound like one the the buttons is somehow stuck on. If the receiver is not responding to the remote at all, then it's possible that your remote is just sending out a repeat code over and over. I might try leaving the receiver turned on and then removing the battery from your remote for a minute or so. Then put the battery back in while pointing the remote at the receiver. It's possible that putting in the battery could send the initial command followed by the repeat code. If your receiver responds to the remote when plugging in the battery you would then possibly be able to figure out which button is causing the problem.
@bihplaydk3031
10 жыл бұрын
thx iĺl try that
So why is it purple like a "black" light? Isn't that ultraviolet light?
nic bid
yes for my science test
this protocol is called rc5
How can 1s and 0s change my channel? Still don't get this stuff
@bacharShar
9 жыл бұрын
It just sends a command the thing that change your channels is the software on the tv
@karenberry9498
8 жыл бұрын
+IceSoldier_LBC Wilson.... you can Type.. "Binary code explained"... hope that helps mate....John :)
It's weird to see a remote controlled vehicle based on infrared rather than on radio 😳
When you realized this video is recorded vertically
Does any smartphone has tis tis IR based remote control???
@VahinSharma
5 жыл бұрын
Yup, One of them include Redmi (or Xiaomi I guess)
@LatteWiiU
5 жыл бұрын
Samsung phones do except for s7 and up
fake vedio
@LatteWiiU
5 жыл бұрын
Not fake
thank you
@RickOsgood
9 жыл бұрын
You're welcome! I hope it helped in some way.
@hahahalol3421
7 жыл бұрын
Rick Osgood how do we know that this is relliable need to write it for a school work?
@RickOsgood
7 жыл бұрын
Well if you are going to write a paper for school, I would suggest using a more reputable source for your paper. To the best of my knowledge, everything I said in the video is accurate, but I'm no electrical engineer. I am just self-taught from other resources online. You should find a source online that you can point your teacher to and feel confident that the source is accurate. Hopefully my video at least helps you to understand the concepts.