The nRF24L01 - Wireless Joystick for Arduino Robot Car with nRF24L01+

[@TheMarbo74]

I can never understand how some people can put thumbs down on any of your videos.

[@marvelous1751]

fr

[@muhammadsalmani7709]

@@marvelous1751 ĺ

[@ansondhakim]

After trying more than 10 different source, this is the one that actually works. Thank you.

[@emiliomartineziii2980]

For anyone in 2023 trying to make a wireless car with the steering controlled by a servo, it will work, but you will need to download the ServoTimer2 library. Also the number to insert in the servo.write() command will need to be from 1000-2000 or it will not work. For the normal servo library, its from 0 to 255, but for the ServoTimer2 library, its 0 to about 2300. Also, if you want to prevent the motor from spiraling out of control, make the max analog output to the motor driver be around 20% less than the actual max, so instead of writing from 0-255, make the range 0-200. I did this and it tremendously increased the stability. When I had it from 0-255 and I went full speed for a few moments, the motor would get stuck on the max speed, but when I made the max analog out be 200, it never got stuck. These are some of the problems I ran into after working nonstop for 10 hours, but I eventually got the entire thing to work!

[@marty812]

Excellent teaching! Your voice is easy to listen to and I appreciate that you sound like someone I would know. Accents are sometimes hard to understand and since we come from the same part of the world, our dialects and accents are the same. Therefore I don’t have to work past that first to get to the great content you have. Straight, to the point, and well written beforehand and not just made up on the fly with tons of stutters repeats. Thanks again. Now my number one source for Arduino tutorials.

[@SVSunnyJim]

Dronebot , your videos are setting fr the standard for learning. You are thoughtful, concise, detailed and thorough. I just wish there was a teacher like you in every field.... 👍

[@brianjohnson2059]

Who the heck are you? I don't know of anyone who can explain things so fast. so complete, and tolerable. be it voice, tone or speed of speaking.. Wow, I found a gold mine here. Thank you Sir. On my journey to save the world from corruption, evil, and deceiving government, religious, or what ever people are doing to destroy our beautiful world. Know there are people out there doing really big things to fix things, and you are a big help to ID10T's like me. One thing you could do for me if you would? If you could configure the eight array antennas' for the Van de Graaff generator's, for E=mc^2. Thanks, you the man!

[@sifatrahman2749]

you are an amazing mentor, tutor what do I say! I learnt so many things from you that I didn't even learn from my course teachers!

[@morosanvalentin2524]

me too . i agree ! this man is SAINT !

[@padmalayarawal3091]

You are super awesome teacher...... You don't leave anything about the topic and explanation is excellent 👍

[@stevealdrich2472]

When he mentions reversing the pins on input output, that means swap the MOSI pin with the MISO pin on the adapter. (pins 11 & 12 on the arduino.) Thanks Drone Bot!!!

[@justfun9971]

Does it work

[@deltaworkshop8181]

@@justfun9971 obvious man 😃😄

[@landmarker]

I mean you know you are a life saver and a great teacher. Thank you for the lecture! On a side note, I have the same digital clock you have on your work bench right there. Makes me hope I can get my workspace that clean and organized one day :)

[@samhintz8479]

You seriously have one of the best channels i’ve seen! Quality videos and quality information. Keep up the good work!

[@TheAFWWA]

WOW. One of the most comprehensive videos I have ever seen. Amazing video quality and editing too.

[@musickorner69]

Most comprehensive NRF robot car in KZbin by far! Thanks! It really helped a lot understanding NRF module. Take care man. 😊

[@casemotube]

Dear Bill: Thank you SO MUCH for all of the help and inspiration you provide to we Aduinovians; I've learned more than words can describe. I thought I might share something I've learned along the way that may help others on a project like this. If an individual is running the Arduino IDE using Windows 10, there's no need to have two computers to observe the communication between two NRF25 WI-FI breakout boards. As long as there are two COM port plugs on the computer, and there are two USB cables to use, here's the trick... First, connect all of the wires between the two wi-fi breakout boards and the two Arduino boards, and open the Arduino IDE to get ready for testing. Open either the client-side or server-side .ino file of the NRF24 project being tested, and plug-in ONLY ONE of the Arduino boards using a USB connector cable to the computer's first COM port. Compile and link the .ino file and upload it into one of the Arduino boards. Make note of the COM port the computer assigns to the connection. Next, right click the Arduino IDE's tab at the bottom of the screen (or wherever the open-program tabs may sit on the screen), and OPEN ANOTHER INSTANCE of the Arduino IDE (don't open the second client/server-side .ino file being tested using the same Arduino IDE as the first). Now that there are two separate instances of the Arduino IDE running, connect the second Arduino board to the computer's second USB port using a second USB cable. Compile, link, and upload the second .ino file being tested into the second Arduino board. The two different instances of the Arduino IDE are now running two separate .ino files on two different COM ports, and two seperate serial monitors can be opened to watch the communications between the two separate WI-FI boards. NOTE: The IDE has trouble when two copies of the SAME .ino file are open. The second instance of the Arduino IDE will most likely open with a copy of the SAME .ino file that is open in the first instance of the IDE. Be certain to close the initially open (copy) .ino file from the SECOND IDE after the second NRF24 file has been opened in the second IDE. If you close the first copy of the two .ino files open (of the same name), you just closed the first instance of the IDE, and now, one IDE shares both open files again (sounds more confusing than it really is). If something goes wrong, say my two favorite words, "oh well," and try again. It's important to follow these steps in order and to remember which Arduino board is connected to which instance of the Arduino IDE, which .ino file sits in which Arduino board, and which COM port each the the Arduino's communicate through. When coding modifications are involved, it's easy to forget which board is the server and which is the client (or, am I just getting too old?). Thank you, again, for your time and effort in sharing your wealth of knowledge. I'll be joining the DroneBot Workshop Forum just as soon as I get my MS email account password sorted out (that's it...I'm too old). I've only known about Arduino since early January of 2020, but have a I have decades of experience in DCv SCR-drive electric vehicles, and I was coding Turbo C in the early 1990, so I have a lot of coding experience to share. I look forward to the experience of the Forum. We have a lot to talk about, and I love to gab. Stay well and take care; Casey aka itsCaseyDambit

[@ericlayton3300]

I can only echo what so many others have said, in one word, "Fabulous" ! The quality of your videos are amazing, information is precise, relevance is on the money and most important just plain fun. Thank You for spending the time to share your passion to educate the rest of us!!

[@naimmekni7536]

From tunisia 🇹🇳 i want to thank you for all your efforts and the excellent explication for everything ... thanks a lot again and bravo continue ❤

[@yasserhussein666]

great video, I don't really understand why few minority would dislike the demo, it must be that they are dump or something. Keep up the great work :) thanks a ton

[@cosmikodes]

Thanks a lot. I am from India and I ve successfully completed the project you are telling about. You did help me a lot to understand and completing the project with in first try. Your long and more informative videos are great for beginners like me.

[@w.1929]

Really good explanation. I failed miserably in the past trying to achieve this very setup 😆 on an Atmega 32 in C++, switched to Arduino a while back but never got around to try again. Thank you so much for going into sufficient detail, but not too much and taking the time to creating this content! Off to try again! 🏃‍♂️

[@aardvarksrock]

With respect to previous comments, I think the videos are of a perfect duration, in that all important aspects of a project are covered completely. Too many "explanatory" vids go to "I'll cover that in another video..." Sometimes I'd understand if their presentations were as rich and explanatory as Mr. Bill's, but more frequently it's someone just drawing stuff on a piece of paper. I don't know if the graphical and animation aspects are contacted out ... but their like watching Fantasia in a world of Beavis and Butthead animations. Now with two vids a week, no one can complain.

[@josverberkmoes9902]

Thank you SO much for this great instruction video. I never could have build this on my own from scratch. I really love it and will soon share it with one of my grandchildren. Hopefully he likes it too.😀👍👍

[@garypowell2016]

Thank you so much. I'm relatively new to all things Arduino, IoT etc. I have never coded before and at 67 yrs just loving every small success. It'll be a while before I can get everything together for this one. You explain everything so clearly & certainly "know your stuff" & 100% agree with "TheMarbo74". I fully recommend your videos to anyone interested in electronics. Keep doing what you are doing.

[@hfe1833]

One of the best video I see on the net with crystal clear explanation and code

[@maxwong6371]

I have been doing this project for almost 2 years,but never success,then my friend suggested me to your website and it looks great! Gotta try it soon.

[@saeedsobhani4213]

Thanks for your Chanel and your hard work, I studied electronics for many years, in different country, they thought so many things except how to program or build robots from scratch. Electronics terms and procedures can be very confusing and challenging, thanks for simplifying them.

[@user-sw3sp1nn9n]

He is actually making good content keep up the work and thank u get him to a mill

[@asadparvez5958]

Excellent job. Your work and presentation is exceptional and has me hooked to your channel. So far I've learned a lot from you. Please keep up the good work. Kind regards

[@r.a.monigold9789]

...our reward - watching the next video!!! Thank you for sharing...

[@willofirony]

Great video and the perfect length. That having been said, I am a member of a generation for whom an expected concentration span in excess of 5 minutes is NOT cruel and unusual punishment.

[@Dronebotworkshop]

I'm happy to hear you say that Michael, I always worry that my videos are too long but I also don't want to leave anything out. Thanks so much for your comment.

[@jean-christophesicotte-bri1315]

you can always remember people they can change the playback speed! 1.25 or even 1.5 is alright since you speak loud and clear

[@alexmarkovic5871]

Great video. Having the same issues as others...too much latency in rcvr response. Reduced delay value to 10ms, but still having issue. Also would be nice to turn both wheels when direction change is activated.

[@tubeDude48]

This proved to be very useful. Thanks Bill!

[@ToorGS]

Sir, your workshop is very well organized. I like so much

[@NickCornaglia]

Another interesting video. I need to pickup some RF modules to experiment as Arduino and Radio Communication is something I'd like to investigate. Thanks again!

[@Dronebotworkshop]

You're welcome Nick, glad I could inspire you. Be sure to let us know if you build something interesting with your RF modules.

[@tehosdevs1727]

@@Dronebotworkshop Hey I love your videos! I was wondering if I could get an idea of the difficulty of making my own antenna? Transmitter & receiver.

[@darlingtononwuemebolam767]

Thanks a lot for this well explained video and concept. Indeed u make technology look very easy and practical to grasp.. but I have a challenge yet unsolved, when experimenting with the reliableDataServer / Client alongside with sensor(joystick), the transmitter is cable of sending data(joystick values) but at the order end(Receiver) , it shows *init failed* on the serial monitor… I have tried troubleshooting to no avail. Pls I need help…Thanks

[@naboulsikhalid7763]

what can I say, Thank you very much. You become my mentor, and I am proud

[@joriskingma]

Indeed a lot of detail, perfect! Many details i already know and understand. Some details though are crucial for me to properly understand the stuff I need to understand. The detailed explanation is a good thing in this case. Thank you for te great video!

[@cosmikodes]

I ve made it two times, but it works like a charm

[@mav29]

that was thorough, very calm and very clear. thanks sir

[@takumu.h8769]

Thank you so much! This video saved my lunar rover project.

[@bruce12000]

Thank you so much for all the great videos and the teaching you do on KZbin for us Respect!👍

[@treverbelmont8393]

can you show us how to use these to control multiple servos, because i have looked up alot of tutorials on youtube and all of them dont explain it very well

[@mrafayshams3089]

Sir can you please work with the SIM800L GSM module? please? I have searched the entire internet but have not found a good and simple tutorial. You do an amazing job explaining everything in detail. Sir please make a SIM800L GSM module tutorial video. It will do wonders.

[@jrareas]

This was awesome. i made my own using arduino nano and a shield. Thanks Bill.

[@markgilding6500]

Another great video Bill. Hope you are keeping well.

[@DiscoveryNewsNow]

if you are using a mega you will also need to add the following code RH_NRF24 driver(8, 53) in the datagram sketches and RH_NRF24 RadioDriver(8, 53); for the joystick sketch as well as change the pin out if you do not make this change to the code it will not work. Great videos thank you

[@Rexan]

U are explaining everything soo good. Thank youu. :) I learned almost everything for arduino here on this channel. Thanks. :)

[@jlucasound]

Great tutorials, Sir! @33:00 you picked up a wicked echo. :-) I am sure you know. Remember "Test for Echo"? Not my favorite Rush album but I love Rush as I am sure you do, also. 2112 and Permanent Waves and Signals. Pretty much everything up to Signals are my favorites. RIP Neil.

[@MaxImagination]

Hi, well made and explained video, I'm trying to hook up the same kind of car with my homemade Arduino transmitter and receiver. How would I make it so I can use 2 joysticks instead of 1, so I can control forwards/backwards with the left joystick and turning left/right with the right joystick, what would I have to change in the code if I were to make such change? Please reply as soon as you can, thanks in advance! Cheers, Max from the KZbin channel "Max Imagination"

[@Vip3rNZL]

Really enjoy your videos, had to pause the video just to let you know! :) please whatever you do, don't stop making them! :)

[@isaacstitely1679]

Please help. I have triple checked my wiring and code but I can’t get this to work. The serial monitor is showing the joystick sketch as working and transmitting. However, the car sketch only shows “obit failed.” What am I missing...?

[@semihk09]

Did you program the receiver and transmitter circuit on a single computer? How can I open two different serial monitors on the same computer?

[@ThomasPalowitchSr]

Thank you for the excellent video - very professional. You provided a very thorough and detailed method to follow. I can't wait to get started on my own project.

[@davidbock5148]

Many thanks, I´m always referring to your videos as its clear instruction for Arduino. I built a few of these over the holiday including my own spin on the HW using a really nice Arduino Nano and shield. I hope its ok I put a reference to you in my Thingiverse build as my bias is more HW. I managed to squeeze in all your sensors on a easy to print version. Dave

[@michaelgad4187]

Your videos are super! I cannot thank you enough!

[@gjdanco4260]

Hi. I am having no success at all with my setup. I tried the first client and server sketches and nothing. I moved on and loaded the nrf24 reliable datagram server on my windows 10 laptop and all I get on the serial monitor is "init failed". I uploaded the nrf24 reliable datagram client to my linux mint laptop, and I get "Sending to nrf24_reliable_datagram_server sendtoWait failed" over and over. I reversed the sketches so linux laptop is server and windows laptop is client...same issues. I would like to troubleshoot the nRF24L01 modules and the adapters but I have no way to determine if one or more are causing this issue. Is there any troubleshooting advice you can give me? I am at a complete loss here. Looking forward to a reply...thanks again.

[@umairraza7542]

Superb Video... i Have learned so many things its great.. i will be highly grateful if u will upload any tutorial on 2-way communication using these NRF24L01 modules..

[@Taran72]

thank you for the video! the Radiohead library with the reliable datagram code is the only one that's working for the NRF24L01 modules I got. I also like your code because it's simple and efficient. Yes, it's better to figure out the joystick position at the transmitter and then send just one enable command vs sending the joystick encoded value to the receiver. I will use this code to complete my RC tank project. :)

[@MattyEngland]

Thanks for all your hard work doing these videos.

[@mohdfarezsamin1493]

Hi, I followed exactly as described but somehow the receiving end seems to be the problem i.e not receiving the data. I swapped the arduino uno & the RF24L01 with the transmitter and yet face the same problem; i.e transmitting but not receiving. I have used other examples available in the internet and the result is the same. Not sure where I went wrong.

[@mykeruiz2129]

I've done it. The problem I encountered is the loose connections of wires. Next project I'll try to use MPU6050.

[@warrenscorner]

Haha, glad I watched until the very end to see the bloopers!

[@atdforgebc4605]

How to change cn and ce pin in the setting. Pls I really need know. My pins are already occupied. I only have 10 and 2 and my board is already set.

[@fieroboom]

Holy camera switching Batman!! 😂🤣 Great tutorial!!

[@bigsteve6729]

Love it when he does the camera switch always makes me chuckle 😁

[@willytwo53072]

Great job as usual. Really enjoy your shows!

[@mykeruiz2129]

This is a great video. I am trying this robot car. Though I encounter some problems on the transmitter side it says "init failed" on the receiver side it says "sendtoWait failed" and there are values given by x and y axis. Is there a problem using a clone arduino UNO as receiver and original arduino UNO as transmitter?

[@rockfan7959]

You are a super kind teacher. Thx!

[@Subrara.]

A great and outstanding project.Thaks

[@basantsinghtomar3354]

I m trying to connect many times but receiver code is not working please let me know what is the problem in receiver code.

[@jordanmisseos7813]

Is there any reason why my nrf24l01 isn't initialising properly. It wont let me use the Arduino to send the data

[@duncanwalduck7715]

The Radiohead library - helps ensure that there are No Alarms and No Surprises (please). Ok, Computer. Haha. (When I can't discipline myself to sit and watch a long video like this I might well swot up a bit of music instead!)

[@jbflores01]

excellent tutorial! thanks for the detained instructions and reasoning...

[@Jair04forever]

Amigo,deseo que la vida te de mucha salud y bienestar,para que nos sigas compartiendo tus conocimientos,tus proyectos son excelentes y nos permiten aprender,ojala otros tuvieran las mismas intenciones y no solamente por un numero de visitas.Gracias. Friend, I hope that life gives you a lot of health and well-being, so that you continue sharing your knowledge, your projects are excellent and allow us to learn, hopefully others had the same intentions and not only for a number of views. Thank you.

[@jupiterpaintingllc1431]

Teacher, excellent video and explanation, I'am learning a lot. thank You

[@diyaaldeen1097]

What a good thing to say in a video like this 0:18.

[@bigdavid3319]

Thanks for the information it was of great help

[@rgonzalez5804]

excellent video. A long one, indeed, with a lot of information to process. It'll keep me busy for a few days!

[@rgonzalez5804]

15:09 Radiohead ... not to be confused with the band that wrote the "ok computer" album ... LOL

[@Dronebotworkshop]

Yes it's the longest one so far, but I didn't want to leave anything out. Check out the article if you haven't already, it's quite long too!

[@coryknipe5471]

I am wondering if you can do a video with proximity sensors and beeper. I have a Harley trike that I am going to experiment with and can not tell how close I am to things when backing up or to the sides of the widest points at the rear. Thought this would be a neat project and very inexpensive. Thanks and keep up the great videos.

[@tancelik]

how can i do this project with 4 engines and 2 l298n? would be glad for your answer

[@nigeriarc3743]

I think a single l298n would do the job,just connect two motors in parallel

[@thanhtunghoang924]

Thank you friends 😍

[@Dronebotworkshop]

You are most welcome.

[@thanhtunghoang924]

I subscribed to your channel, it's a really good video

[@dominickcivitano2717]

Hi there! really solid video but I need some help. For some reason it says init failed. I've triple checked the circuit, replaced almost every single part and have gotten no results. any way you could help me?

[@kevinbass8851]

@10:25 when you say "input and output pins" are you referring to MO and MI as labeled on the adapter???

[@barmakkhodajan3770]

You really got magnetic personality

[@plebaniaurydzyka8356]

DroneBot Workshop , can I use this device with AtMega328 which you showed in one of your videos? I am using that device and I have problem because every time I use it I see "init failed" on the Serial monitor.

[@deepeshkumarpandey5469]

Hi there , you have a wonderful content i have been following you for a couple of months thanks for your detailed videos My question is , is it possible to use lora and nrf module together?

[@grahamvernon3963]

Great programes & as a 78yrs old I am trying to find witch two wires you are suggesting That were swap around (Input & output) as I am new to wireless controls With the nRF24LO1?

[@TheRealFrankWizza]

I'm using 3 computers. One for the video as well.

[@chethangowda2919]

The receiver Uno board is showing init failed can someone please help me regarding this?

[@burakozsahin2624]

Hi Sir, Thanks for the video and guide. But I have some several issues that I'm facing right now. I copied and pasted code for both tx and rx side. According to your video I also double-checked each pin which are connected to ardunios. Unfortunately, my setup is not working as yours. I cannot move the car with any of command which is coming from joystick. I figured out that even if communication is established between two ardunios the car doesn't move. Most of the times communication cannot be established. I'm using all components that you're using in the video please help me.

[@xrphobby1341]

I used shift register 74HC165 to increase my push button switches, and 3 pins of Shift register (Load in Pin1, Clock in Pin2 and Serial out Pin9) are connected to arduino with wires and it's working ok. How is it possible to connect wirelessly 3 pins of Shift register to 3 or more arduino boards and achieve the same result with the use of NRF24L01? THANK YOU.

[@panwarhappy9368]

Your workshop is nice

[@MagicSmoke11]

Where could be that Labeling issue on that adapter board you mentioned ? My adapter board also having issues in configuring. Where could be that labelling to check for ?

[@karthickkumar9821]

Thankyou So Much for the Video Explanations.... Very Easy in Understanding..Intresting too. !!!

[@vk4865]

A truly awesome, very informative and flawless video. Surely will try one day.

[@Dronebotworkshop]

Thank you, I hope it does inspire you to build something with the nRF24L01 soon.

[@vk4865]

Yes, Sure Sir.

[@andrewrowe7301]

what if i have multiple l298n on one arduino uno using rf24 to connect to another uno used as a controll board

[@treverbelmont8393]

can you show us how to use these to control multiple servo motors

[@kavishchhajer7579]

Thanks a Lot Sir

[@MrMully03]

I'm confused with your if statements in the steering section, wouldn't your if statements for >255 and

[@aerospaceengineer8484]

Hi can you make a video on how to control it with the X box controller

[@nesar93]

Hi! I used 2 nRF with integrated antennae and hooked them up to Arduino Uno and Nano. Wiring is as mentioned in the video. Adapter is not used in either of the nodules nor have I used decoupling capacitors. Only client program is running (serial monitor shows.."no reply, is server running?"). To be sure, I exchanged the codes on the two arduinos. Turns out that there is no issue with the hardware and even the voltage is on the recommended 3.3v. Server sketch doesn't seem to be running. Serial monitor shows "init failed" Any diagnosis on what might be going wrong? Thanks in advance!

[@mickthebass6086]

Hi Nesar, your not alone on this issue, I have the same problem. I can get a temporary response from the server by touching the terminals on the RF24. Like you, I have no issues with hardware and I have tried other code examples, swapped CE and CSN (radio) to other pins, used with and without adapters and various capacitors across the power supply. All to no avail. If you find an answer, could you let me know please, I,ll get back to you if I find a solution.

[@SuperSkullz27]

gotta love the smooth side turn at 3:18 XD

[@henkoegema6390]

Excellent explained!