IR Remotes & Microcontrollers - Arduino & ESP32
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- เผยแพร่เมื่อ 13 พ.ค. 2024
- Everything you need to know about using IR Remote Controls with Arduino and ESP32.
Article with code and resources: dronebotworkshop.com/ir-remotes
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We have looked at infrared remote controls before, but the library has changed in the five years since we did, and the technology has advanced. So it’s time to pay this topic another visit.
First, we’ll see how these gizmos work and get into the details of the NEC IR Protocol, which about 80% of consumer devices use. We’ll even hook a recover and IR diode to an oscilloscope to take a look at the invisible infrared signal.
Then, we’ll get up to date with the latest IRremote Library updates and look at another library that supports three times as many IR protocols. I’ll also show you how to handle those “stubborn” remote controls, like the ones used with air conditioners.
And, of course, we’ll have plenty of “hands-on,” with experiments based around both a classic Arduino Uno and an ESP32.
And I couldn’t have you watch an hour and a half of video without building something practical. So, we’ll finish up by putting together a custom IR remote control with an ESP32. It uses a web-based interface, so you can add as many buttons as you need and control your world from your phone or tablet.
Here is the table of contents for today's huge video:
00:00 - Introduction
02:53 - IR Remote Controls
10:42 - Sensors, Emitters & Scope Test
15:40 - The Arduino-IRremote Library
17:43 - Arduino Uno Hookup
24:44 - SimpleReceiver Example
30:52 - SimpleSender Example
35:31 - The IRMP Library
37:38 - Arduino & LCD Hookup
42:10 - AllProtocols Code & Demo
46:04 - Emulating Transmitters and Receivers
47:06 - Receiver Code & Demo
52:52 - Transmitter Code & Demo
1:00:30 - Capturing IR Remote Codes
1:01:19 - ReceiveAndSend Code & Demo
1:10:58 - ReceiveAndSendDistanceWidth Code & Demo
1:16:18 - ESP32 Remote Control & Hookup
1:19:06 - ESP32 Remote Control Code & Demo
1:28:53 - ESP32 IR Receiver Hookup
1:29:48 - Conclusion
Believe it or not, there is more material, but I had to stop somewhere! So keep your eyes peeled for another video with three really cool IR projects.
And make sure that you check out the accompanying article on the DroneBot Workshop website. It has more information and links to many IR remote control-related websites.
Hope you enjoy the (long) video!
Bill - แนวปฏิบัติและการใช้ชีวิต
Hi everyone - It's come to my attention that there has been someone masquerading as myself, responding to some comments here with a link to a Telegram chat to win a prize from me. THIS IS A SCAM, I am not holding a contest, nor do I have a Telegram account. PLEASE DO NOT RESPOND TO THESE MESSAGES!!
It's happening on a lot of my videos, I'm taking steps to remove them manually, but as I have 162 videos, it will take some time. If you do run across a suspicious comment, I would appreciate you letting me know at info@dronebotworkshop.com.
Thanks!
Bill (The real one!)
Believe it or not, as long as this video is there is a lot more! I have three more advanced IR remote projects that I will be presenting in a future video.
Please do 🙏. I have an IR project and struggling with changing the timer to timer 5 on the mega because I am using a TFT shield. I watched your video on ISR and that helped me to understand a bit more and I trying to figure it out. Gonna watch this video on by break. You do explain things very very well.
Great video @Dronebotworkshop , got to learn a lot!👏
But I have a genuine question :🤔
(Q) What is the real use of remote-controlled lamp or may be some other Smart Home device?🙄As a tinkerer it's great to build such a product. But my question is that, is it really required?
When something so common like a lamp has been used for generations using a simple electro-mechanical switch, what necessitates the need for add the remote control functionality ?
I am asking this because I am badly confused😩 regarding my career choice. Do embedded systems like this remote-enabled lamp or some other is a *SERIOUS*🧐 application which has mainstream demand like for Laptops, Smartphones, Routers, TV Sets etc.
P.S. : I am asking this question genuinely. I live in India where I don't see much use of such a product. I am confused regarding what career choice to make : Chip designing or Embedded SW/IoT Developnent?
Looking forward to them. Great work and effort, thanks a lot.
I for one look forward to that.
I REALLY need to get my butt moving and start my universal remote control project.
Long story short, I have several Logitech 600 series remotes.
All but one need button pad repairs as most buttons either don't work anymore or are really hard to push to get a response.
Logi no longer makes remotes and it's very pricey to buy parts for these (yes, there's a guy who actually makes replacement full sheets for these things, but the shipping costs as much as the price of the sheets)
So I need to build a universal remote to duplicate the functions of these remotes.
Sadly, I can't just download the codes from Logitech's database that they use to program these remotes.
So I need to sample each button on each remote for each piece of equipment. LOL FUN!
It's a pretty big project, so any ideas will be appreciated.
I think that the one difference, however, is the display.
I see that you are using a TFT shield, but I'll be using Nextion displays as I do with all my projects.
Looking forward to this... soon!
.
i have a question can u make a video replicating the function of the flipper zero ??? like the IR if one of the things which is festinating but like is it even possible also nice video as always
This channel is the gold standard for quality instruction.
ABSOLUTELY!
It's a real complete lecture over IR protocol and its applications on Arduino. The relative web page is clear and well documented. You are a excellent teacher !
A truly comprehensive and informative lesson in IR technology and micro controllers in general. Could never thank you enough!! ❤
Another great educational tutorial. Looking forward to the other projects too. I don't care how long your videos go, it's just and more and more great stuff. Thank you.
Bill - your tutorials are the best out there - such a definitive reference that is a spark for loads more projects. . Thanks a lot and like others I really appreciate the effort you put in to generate these.
Extremely interesting tutorial. In terms of content and quality, but also the clear pronunciation, which is perfectly understood even by people whose native language is not English.
Thank you!
I learned so much by watching this to understand I knew/know so little. Thank you!
Thanks for the video! A really clear step-by-step guide for the uninitiated. I was able to follow and learn. I'll need to watch again to absorb the detail but that's the great thing about your videos: they are there when the student needs a second look. Thanks, Bill.
WOW! That was a lot of very useful information!.
I checked in to this presentation because I wanted to build another IR system to control a model railroad streetcar. I had the code from several years ago but when I tried to use it, it wouldn’t work because the IRremote library had been updates and now my existing code didn’t work. 😢
Help from internet sources was cryptic, at best, and used a whole lot of jargon that I am unfamiliar with, since I am completely self taught on microcontrollers. DroneBot Workshop is once again my go-to source for easy to understand and accurate information presented in a clear concise style.
Now it’s back to the workbench to try modifying my old code to fit the new IRremote version.
Thanks again for making things easy to understand (I do use the back button a LOT)😅
Again and again I am impressed by the quality and details of your explanations in the videos. Thank you so much.
Dear Bill, your work was and is the biggest inspiration in DIY electronics i ever found and ever had. Your examples and explanations are of perfect choice and performence. Thanks to you, i am now able to build everythink i want. Thank you Bill!
I bought 5 ESP8266 boards with OLED and WIFI for under £10, I have four main Projects, A fancy Digitally driven Analog clock, pendulum and mechanical chimes, Three axis CNC automation for my Slab Flattening router bed, Control and monitoring of my Pond temperature and water level, and a learning remote control for my Sony Smart TV, whose remote died and I couldn't get an original replacement only a third party one which is awful.
I haven't done any programming since the 1980's Commodore and Sinclair BASIC and Z80 and 6502 machine code. But you make this look so easy.
I uploaded The Arduino environment and ESP8266 board libraries, with my board announcing "Hello World" I'm ESP8266 OLED! D5=GPIO12=SCL and D6=GPIO14=SDA. I'm ready to get soldering to my Veroboard and start experimenting.
Hi Bill and thanks for the heads-up that this video was being published this weekend.
My grandmother had an ultrasonic remote in the late 70s. We realized it when we got metal slinkies for Christmas. The tv seemed to have a mind of it's own! Changed channels, volume, and would turn off and on.
Remotely fascinating... Nice!
How can you say it’s nice before you even watch it? It’s an hour and a half long and you commented before you could possibly watch it.
This is an absolutely all-time BEST video for me! Thank you!
Incredible content, I am lacking of superlatives when it comes the quality of the content you're offering us. thank you so much!
Another awesome video again. Thank you for such a clear and thorough explanation.
This is truly superb, huge thank you!
Thanks, this will be great reference info for when I get around to making a replacement for the Harmony remote that currently controls my home theater system.
As usual, brilliant!!! Thank you!!!
very nice video explaining IR systems, gives you some very good inside how they work and how it can be implemented, look forward to the rest regarding this topic.
Brilliant! Just what we needed. Thanks heaps.
This is indeed a very useful and detailed video. I hope that the coming follow up vides will cover the integration of these IR remote controls into existing home automation platforms like Home assistant. I could not find any way in which I could integrate this with ESPHome. Hope you can guide on this direction. Looking forward to the follow up videos.
4:40 - The device that gave us the term 'clicker' in reference to remote controls.
Honesty that part of the video was a total mind blow! Had no idea it relied purely on mechanical vibration and zero battery power :O
This is the stuff of Technology Connections. He needs to do a video on that!
At 22:45 that should be a 2N3904 NOT 2N3906! At 38:16, I would have used the I2C to cut down on the number of connections!
That is an important point regarding a 3904 vs a 3906 and could cause some some confusion and frustration. Probably should have a caption added to the video.
You know what the worst part of your videos is?
Because you live in Canada, you release your videos around bed time here in Europe. And I just have to watch your material! And yet, my alarm goes off at 06:25.
Do you know how much sleep I miss because of your great videos? 😂
Excellence is the name of this video. The best.
Excellent refresh ! 👍
Thank you for everything you do!
Thank you for all these great video.
What a great video - and timely. I was just about to start a remote control project. I can’t imagine how many hours you spend putting this content together. I wonder how hard it would be to solve one of my most aggravating remote control issues. You can only type characters into a TV with the remote by using direction arrows - especially annoying when searching for a movie title on Netflix or similar apps. Would be nice to input characters from a phone keyboard directly to the TV.
Impressive explanation
Always enjoy to watch your videos.
Thanks for another great tutorial- I also recieved your email . I like the early notification and an insight into your thought process going forward..please continue the format !
Excellent tutorial that gives the taste to experiment with IR. Very clear information, well paced. Thank you very much for sharing your knowledge. Regard, RJM
A cool/fun/evil use for this library is to make a portable unit that cycles through all possible protocols and addresses and sends the OFF command.
I think you meant 2N3904 and NOT 2N3906. 2N3906 is PNP. 73 de N1FBZ
You're correct.
Great Great Website and excellent tutorials presented in such way that the 'mortal man' can understand. I thank you for your time spent in researching and compiling top-notch vieos. All for free, truly remakable.
Much appreciated.
Brilliant!
I played around with 2 line LCD displays back when they had high voltage power supplies for the backlight. For the one I had, the R/W pin was to write custom characters into the display. I ran across the project a little while ago. The wirewrapped Z80 with RAM, EPROM and PIO and the custom characters I had put in the display still worked after over 30 years. Do modern LCDs accept custom characters?
Thanks!
Very useful video, THX.
Fantastic discussion of IR remote control aspects. Excellent presentation and detail. I'm looking forward to seeing what the other projects are that you've done. Have you done anything with addressable LEDs? I've been playing with that with some success (and some failures). I had a hard time getting the $10 LED strip controller to recognize its IR remote, but eventually it started working. Thanks again. (Oh yeah, which ESP32 module are you using?)
Thanks for sharing this useful information and idea ,,,,, 👌👌👌👍
Great! I find the content of your channel very interesting and useful.
By the way, are you planning on getting back to the DB1 project ?
A good presentation overall. Someone has already pointed out you must have meant a 2N3904 rather than an 06.
At 21:16 I'd suggest the dropping resistor is important as it allows one to seat the IR diode current to a predetermined value.
At 21:15 your location of the IR diode looks undesirable to me. It would be more typical to locate the diode with the resistor in the collector circuit (as you actually do later in the video). It would be best to keep the collector to emitter voltage small when the transistor is on. Let the transistor stay cool.
Great stuff again
Well Done.
Great video thank you for sharing. Not sure if it's been mentioned or not but around the 23 minute mark, I believe you want a 2N3904, not a 2N3906. This will match the schematic symbol shown.
Hi. Great video. I don't quite understand the connection between IR Emitter and IR Receiver Module. The IR Receiver Module receives at 38Khz but does that mean that the IR Emitter sends with 38Khz or how, there is nothing in the software that states that it must be sent with 38Khz. ?
Would love to see the IRMP project beeing done with a raspberry instead as a single project!
A titch off topic - was trying to join the Workshop Forum but the "manual registration" link just flips back to the same page. Could you let us know how to do that? Many thanks.
Very very good sir
Thanks for the usefull video. A year ago you shared a video about WifiManager with esp32 it's also very usefull but I want to someting to share about ethernet manager with esp32 ethernet modules or lan8720 integrated external hardware. Can u share a video for ethernet manager explanation as wifi manager video sir ? Thanks to you for precious knowlages....
I am very interested in this video and the next 3 projects as I would like to build a universal remote that will control everything in my home entertainment system. I am interested in using a Nextion display for it so the screen graphics are not part of the remote control code. For me a very timely set of videos.
I had a house full of IR controllers 10 years ago... every remote for TVs and receivers and everything is RF, and now switching to BLE nowadays
Thanks a lot for very helpful video. If i want to change the NEC Protocol to another one such as Samsung, how should i change in the SimpleSender code?
Is it enough changing "IrSender.sendNEC" to "IrSender.sendSAMSUNG"?
I remember our first TV with a remote control, it could also be used to remotely control our dog. On the dog, however, it only had two functions. Funk#1 get the dog to stand straight in front of you. Funk#2 make the dog clap his teeth hard.
Is NRZ similar to Manchester? I learned about NRZ encoding (non return to zero) at a maintenance training school covering the D2 video format. D2 was a digital video tape format for recording composite NTSC or PAL television, now obsolete. Thank you for your presentation. You assume I know next to nothing, which is somewhat true. :)
Can an Arduino Nano ESP32 be used for the web based application shown at the end of the lesson ? Thanks
Always good.👍 👍 👍 👍
Spy Gadget: A Dead Drop IR encoded message into a MicroSD (Deposit and retrieval at a distance) ... THAT WOULD BE SO COOL!
Great video @Dronebotworkshop , got to learn a lot!👏
But I have a genuine question :🤔
(Q) What is the real use of remote-controlled lamp or may be some other Smart Home device?🙄As a tinkerer it's great to build such a product. But my question is that, is it really required?
When something so common like a lamp has been used for generations using a simple electro-mechanical switch, what necessitates the need for add the remote control functionality ?
I am asking this because I am badly confused😩 regarding my career choice. Do embedded systems like this remote-enabled lamp or some other is a *SERIOUS*🧐 application which has mainstream demand like for Laptops, Smartphones, Routers, TV Sets etc.
P.S. : I am asking this question genuinely. I live in India where I don't see much use of such a product. I am confused regarding what career choice to make : Chip designing or Embedded SW/IoT Developnent?
I'm a retired engineer. Worked 41 years in the aerospace industry. What I see coming is a huge demand for people that know IoT development to create the "Smart Factory". The Smart Factory concept relies on getting accurate data about the state of the production process and making real time adjustments to optimize the system. One project I worked on was optimizing the flow of parts, tools, and materials through a factory using a fleet of automated guided vehicles, overhead cranes, tugs, and pushcarts using a mixed integer optimization algorithm.
If I was just starting my career, I'd go into IoT, machine learning, and optimization. Lots of high powered math and clever software development. Very few people have the ability and desire to do this kind of work and the demand will be huge. Short supply + high demand = great pay.
For the remote controlled light: have the remote at the door to the bedroom to turn on the light, carry it to the bed and turn off the light there. Or have multiple remotes, one at the door, one at each bed.
It could be done with wires, but that requires a lot of cables, and rewiring if you move the beds.
Plz make a video on how to measure both positive & negative voltages with Arduino... Also plz suggest a 24 bit ADC plus a method to measure voltages in both polarity... Thanks in advance
That'd be a good video :D I expect you'd have to use Opamps to add an offset so you could measure negative voltages. I know Bill did a video on Opamps, but not sure he covered this
IR is a good method for input, but do you know what you have not covered in the last 4 years of your videos, speech recognition with the cheap modules. I know they're not very basic 'on the inside', but they only throw out a serial byte to show which word they recognized.
I must add I have no idea which of the
and maybe one day you will start producing the videos about Smart Home, i.e. Home Assistant, and usage of all your till now projects to build smart home ;-)
Hello,I have three servos working with the millis function. But if I want servo2 to have a different period none of the servos work.
Do you by chance know similar libs for micropython?
Bill
I'm new at your channel, I'm trying to register to gain access to the forums but something is wrong and it won't let me.
Thank you.
Adding to the complicity of the protocols itself, are the stated combability charts in the datasheet of most IR Receivers:
Maybe you could explain this in the next video, thanks
Everlight IRM-36XXT Series
Code compatibility:
Protocol Suitable Protocol Suitable
Matsushita Yes Sony 12 bit Yes
NEC Yes Sony 15 bit No
RC5 Yes Sony 20 bit No
RC61) Yes Sharp Yes
Toshiba Yes Zenith Yes
RCA No Continuous Code No
hey sir. I have a preocupation if you can help me... please do you have an editor that you can propose me if i want to program a raspberry pi 3 on windows OS?
I see same signal even when i press different buttosn on remote control. I see same signal on osciloscope whihc is connected to singal pin of IR reciver.. how to fix it ?
❤
Be sure to checkout my video for universal IR receivers for your desktops.
Any ir remote you use here, you can make an arduino device that will read those controller values, and run code as a byproduct of that signal with my IR Desktop receiver modules for only $8.
Video is definitely worth a watch if you want to not only obtain hardware to do this, but code behind it is what makes it awesome! Super high speed and low memory meaning we can add hundreds of ir values
how do we find the new videos?
👍👍👍👍👍👍👍
Got your email 😃
What is it.?
Amazing contents and information, but I don’t get it what happened to the use of all those mechanical tools and stuff being recommended as starters tools for electronics and robotics. Most these contents are just coding.
More than remotely fascinating. 🤣🤣🤣 That was a good one!
Way too complicated.
The tv was not invent in America check your facts. This not the first time.
Thanks for your videos! They helped me a lot in my projects! 👍🫡
Thanks!
You're very welcome!