You nailed it! Perfect timing because I had a headache working with this modules last weak.

Hi, I want to thank you for your excellent video. After implementing your suggestions I managed to get the modules working just as I was about to throw them out! I have several students whose projects suffered as they could not get them to communicate. They are now about to become successful. Thank you again

I had the same issues until I learned from your previous videos. Now you have all the info in one place! I greatly appreciate your effort!

thank you so much for this video! I thought I bought a bad module with a weak antenna, until i realized that it was the MISO/MOSI connection, who was responsible 70% of the transmissions failing. The trick with the ground wire twisting around mosi/miso cables did the job and now all my transmission suceed with 0% loss!

Andrei, I love this new video. Several years back I watched your video "Which radio module? NRF24, LoRa, CC1101, HC12, 433MHz, HC05" and thought it was a wonderful overview video of the common different radio modules to choose from. Ever since then any time someone asked about radio communications in the Arduino Facebook groups I'm a member of I recommend they come watch that video. My take-away from that video at the time had been to use an HC-12 module because of the troubles you mentioned with an NRF24 module and because I didn't think at the time that I had enough pins to use the NRF24 with my 6-axis robotic arm project. I've used the HC-12 module in several projects since then. I've generally made it work. But it is difficult because of the slower speed. I've started doing several projects using ESP32 Node MCUs using the built-in WiFi capability (no need for the internet - just using the WiFi hardware - this was before I heard about ESPNOW). Recently I came across a video "Arduino 10 Channels Wireless Transmitter Receiver | nrf24l01+| DIY" by the "hash include electronics" UKposts channel which convinced me I could give the NRF24 a try. So, I bought some. It's on my to-experiment list (haven't tried them yet). Seeing this video gives me an even better understanding of the tricks of working with this module. I am very appreciative. Thank you for releasing this video of your experiences.

The power regulator and short wire with ground twisting solved my issue. Thank you so much.

Thanks, struggled for four hours then saw your video. Really helped me Thanks

I used several pairs of these in an escape room. Most of my problems went away when I put caps directly on the board's power and ground pins. I got away with "hanging" the radio boards off of harnesses several inches long, with no apparent SPI problems, though I was likely just lucky there. These can be extremely frustrating, but once you get it all figured out, they're pretty reliable.

The problem with your noise errors is most likely because you are not using a good ground reference. So the signal couples with the power or other signal trace because that is the closest return path. If you grab your existing design make it 4 layers and add two ground planes on layer 2 and 3 so the SPI has a solid reference a lot of your issues will vanish. Also if you switch layers with a digital signal put a ground via close to where you change layers (near the signal via). Otherwise the signal loses its reference when you switch layers. Basically you want your reference plane to be the closest thing to any signal so that plane acts as the return path and not some other signal or power trace. Also its a good idea to include some RC filter on digital signals (33 Ohm and 330pF is usually fine for SPI stuff) . Best case is you dont need them and you can add a 0 Ohm resistor or a blob of solder. But if you have noise problems the RC filter can smooth out the edges.

Wow, a treasure trove of experience! Thanks!

I too have run into all those problems, ESPECIALLY the "noise" issue! Even with short wires! But I did resolve that, mostly for my testing process. What I did is to use a special cable that has 6 wires with double shielding! I know that this sounds "thick" but it's actually not. It is a bit stiff, however, but not enough to become a problem. As these are pretty short, I use a drill to twist the wires inside the sheath. I could have used a shielded CAT6A cable, but I didn't have any of that on hand. So we make due with what we have. LOL I put connectors on the end for the nRF24 module and pins on the other end to connect to the Arduino, which now, I use an special adapter for. The Nano plugs into this adapter and all the pins are now easy to connect to via screw terminals. At each end of the cable is a snap on Ferrite Core RFI EMI noise filter suppressor. Since doing this, my connections have been solid. Before that, even though I used short wires and ASSUMED this would be fine, I couldn't get consistent connections. I know that some people know how to use these radios without libraries as they use direct access calls, however, I don't. So the other thing I discovered, is that NOT ALL LIBRARIES ARE GOOD!!! In a project that I'm working on, I will have multiple transmitters. I was using a good library that didn't suck up a lot of memory and using a method of cycling through channel numbers. This works. But then, I though, I'll try a library that implements "Network" methods. All I can say is WOW, is that slow and sucks up so much memory on the arduino. I went back to my method that works fast and less overhead. These modules are great when they work. It's getting them to work consistently that is the challenge.

Another recommendation for spi board layout is to make sure you keep an uninterrupted ground pour on another layer, always be aware of return currents.

Boy you make high quality learning content.these informations can be very useful

Thanks a lot for the video you saved me a lot of time, I can't express how grateful I'm

Very well explained in a short time, thanks.

Thanks for this vid. I always had problems with it.

As I say: Electronoobs has many great tutorial. Thanks

Thanks a lot for sharing another great tutorial and awesome information

You are amazing... I wish u the success u deserve bro... Love from India ♥

I like these troubleshooting/tips videos

Thank you dear i have been waiting for a long time

I was struggling with these modules, the integrated antenna version, and their own, proper, power supply modules. I wasn't getting any connection or communication. Finally, I managed to get things working by wiring the nrf24l01 directly to the arduino and removing the power supply modules completely.

I can say this is the best video I've seen today

I had the same problem but only with the separate antenna version. Set the software transmission power moderately lower, I have it on midium that works better. Make 1 central mass on a pcb. Put the battery voltage (+) as close as possible to the transmitter module with a capacitor of 0.1 uf directly from plus to minus. I work with only layers and have large ground surfaces in them. Where possible, also run thin mass tracks between the IC pins in the digital part. For RC control, the reach is more than enough.

Brilliant, thanks

I had my prototype working with two nRF24L01 modules. As you mentioned, they were pretty picky about my power source (USB power bank with a switching regulator to 3.3V) and worked reliably only when I added 470uF cap to the power supply and also 10uF directly onto the pins of the module. Also, I'm using a custom ACK logic in my because the built-in ACK can be unreliable on nRF24L01 clones (it told it received an ACK when it actually did not). Now I needed to miniaturize the transmitter to fit it into the small space of a third-party device. So I replaced my nRF24L01 with an SMD-sized module that I soldered directly onto Arduino Pro Mini. In general, it works but the packet retransmission rate (due to missing ACKs) is a lot higher causing bad latency. It seems the nRF24L01 does not like its antenna being so close to the Arduino's CPU. I'll have to experiment with the antenna or just ditch the idea of using the SMD.

Good points!

Amazing tips !

Wow i serio8usly needed this info super a lot thx so much

Amazing 🤩

Very good. Nice info 👌

Helpful video 👍

Nice work

спасибо. полезная информация.

Great video, thanks

Huh, here's my story. I was fixing it and fixing it, and Was unable to get it to work, not even the basic transmission, and kept trying everything, everyone's code, everyone's library, all lead to failure. I was stubborn and didn't want to give up on them. And then I finally decided to try and replace one of the modules with the 3RD one I had lying around, and wola! it worked. -I was struggling so hard, and didn't want to test the other module because I was kinda lazy and kept thinking that there is some interference in the wires, or that my Arduino 3.3V was insufficient so I ordered 3.3V linear stabilizers and the outcome was the same, then I tried wrapping the ground wire around the Miso, still nothing, not working.. and then for the last resort I swapped one of the modules, and luckily enough I swapped the broken one on the first try and the Transmission began, So let everyone know, if you're unable to get it to work, not even any transmission,and you checked everything, then perhaps you really have a faulty module, and it isn't the bypass capacitor nor the insufficient arduino 3.3 power supply.

Very nice video, thank you very much sir

Great video!

this vid came in the right time i entered youtube to find if anybody had the same probleme as mine. basically i am trying to get it to work for more than 2m but it seems i can't, whenever i get further i lose the connection. by the way i did a cool drone controler using arduino mega and an LCD 480*320 module if you want i can send you the code maybe you can take a look into it and tell me if my problem is software not hardware.

Very nice

Top demais , sou muito leigo , e aprendi demais.

guessed what i needed

Thank you

great video I like it, it is easy to understand

How are you following my search history....? Yersterday I searched dronebot video for this module and today you are back with NRF24 video... I also watched your video but it was comparison between different wireless modules...

I have been fly radio controlled planes for 45 years. In the days of 72. MHz, we twisted the wire going to the reciver 5 twists per inch to avoide noise.

Buenisimo el video

3:50 SPI is very fast and sensible, lol. Thanks for the video!

very interesting !!!!

Hello I loved your project that you used NRF with stm32 ,

Nice informative video. However you did not mention that transmission fails if trying to send a big payload and the transmitted packets exxeeds 32 bytes. Solution is to divide the payloads on several packets.

Don’t completely agree with your top3 here but it might help some people. So wrong about the 3.1V problem though! These work fine down to 2V - datasheet even says 1.8V but the clones need more. As long as the voltage is stable. However the power decoupling needs more than 0.1uF near the module. For many years I’ve used a combination of a MIC5504-3.3YM5 (300mA LDO) with 1uF in/out and a 10uF ceramic 0805 near the module and never had an issue. Relatively expensive for 10uF caps though but some bulk near the module is important - an electrolytic is fine if you have the space. 10uF will also let you use it with a CR2032 coin cell. Besides power, 9 out of 10 problems I’ve seen are misconfigurations. Always make sure both sides have identical data rate, payload length, autoack etc. on both modules and some clones have issues with DPL. Always make sure your SPI connection is ok by reading from the module. Third problem I’ve noticed is compatibility between clones - yes the solder blobs are usually incompatible - but you might also find issues between other clones. I certainly prefer a module where the chip says SI24R1 than one where it says NRF24L01+ but the price tells you it’s not genuine. Make sure you use two of the same clone.

Good twisted cables can be disassembled from LAN cables i.e. CAT4 5 6 cables, already twisted pairs.

4:58 that saved my day, thanks

Thanks! Can you made the same video about Lora EBYTE UART modules?

First of all, thanks for the Video! This would have helped me a lot when I started with the NRF and it explained some of the Errors I was getting. But there is still one Problem I never managed to figure out. I got everything running with the Module with a integrated Antenna. Everything was stable and I got about 200 Meters out of it with minimal to no failed transmitions. But when I exchanged the SMD Antenna Chip it for the Chip with an external Antenna, It would compeately fail. I tryed 5 different boards from different manufacturers and all Failed. It should have had enough Power. I tried running it from my Lab bench Power supply directly and it still would not respond. Not even to SPI. It wouldent even initialize. At the time I could not find much on this issue online, but I think it might be interesting to know why this might happen

Bro can this module give unrequred operatins due to other radio wave like fm or other this types radio remotes

🤝🏻

Yo he dejado de usar estos módulos desde que descubrí que los esp32 tienen integrada la tecnología RF con la tecnología Espnow y los puedes conectar sencillamente. Yo ya no pierdo más tiempo con los Rf24

Another tip for noise reduction: don't leave any sensitive wires or connections next to USB data lines or even a USB cable. For whatever reason, USB is very noisy (it can be picked up if it is very close to an AM radio), and I have had several issues where USB was the culprit for noise (although not with mrf24).

after long time of useless videos ,this video today is useful like your old days, keep on like this....thanx

I had a ton of problems with this module until someone pointed out that you can drop the data rate on them. I'm using the arduino RF24 lib, and by going from the default ( #define RF24_SPI_SPEED 10000000) to half that, everything just magically started working for me.

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I've lost many hours of my life to these modules...

Not using a breadboard is the biggest difference. I finally have mine working after weeks

may be you will share the small PCB of the receiver which you showed one year ago ... in the STM32 Radio Controller

For getting long range what dat speed rate should I keep

Have you tried to apply a pull-up on the MISO and MOSI lines?

Do you have video that teach Bi-Directional communication for NRF24?

Hi. Sorry my english... I have a NRF version with IPX antenna connector. I have tested with onboard antenna and work well. My question is: I read in one Ali vendor this about especific IPX model: "The module uses the onboard PCB antenna by default. The chip inductor is soldered to 1, 2 as shown in the figure. If you need to use the ipx carrier to pull out the external antenna, you can put the chip inductor to 1,3 as shown." Is necessary, if use a external antenna, change the solder in base of antenna pcb ? Thanks

One tip is to use CE=10, CSN=9. This is the only way to get the integrated Nano3 boards to work. This caused me endless frustration because all the examples have them the wrong way around.

Thanks for all pro what's up my friends❤❤❤

Hi I have a question about nrf module with Ipex connector, do we need to desolder anything and solder it to another place to activate the antenna or the Ipex antenna is active by default alongside PCB an

NRF24 module: s.click.aliexpress.com/e/_9z5uOv My Tools: bit.ly/3uv8bc3 Help me on Patreon: www.patreon.com/ELECTRONOOBS

when I was new to arduino I bought some of those chips to have some fun, and like those comments I got no luck. I think now it's time to reuse those chips. fortunately I didn't throw them away lol

May i know why some antenna is not working same spec only length oft spec will xaris

I tried several times to get it working. Finally found solution: Solder 10 micro farad capacitor across VCC and GND

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Great tips! Can you recommend a decent supplier of this module?

Watch out, with Teensy microcontrollers, you might have to change the SPI transmission speed directly in the SPI.h library

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My number 1 fix is just noise reduction on the power line.... my NRFs work near perfect once the power lines are filtered. Even if the power line is clean, i find adding a cap reduces latency in the Tx time

5:10 - Twisted pair cabling. This is how STP cables (commonly ethernet) does it.

Hi, Sony smartwatch somehow could not communicate with Arduino IDE. If it won't be a problem for you, can you explain how you did it with a video? How the drivers are installed, I could not do it. Thank you.

Is it useful to add those capacitors even between pins of a larger NRF24 module with that big shielding on the PCB? Thank you

Nice video , is the data transfer fast enough to carry voice communication ?

Hey, where did you get your lipo batteries (especially the blue one 7.4 volts)

Most of my problems with the NRF24 were solved by someone on the net (sorry, can't remember who) having great pages on why NEVER to POLL the STATUS during Tx/Rx. The transitions from the SPI really mess the signal quality. Instead, use the IRQ pin.

Is uart , sensibale as spi ? I am doing firmware dumping project !

Awesome video, as usual. I'm amazed by the range (31Km) you were able to get out in the open field. The antenna you're using is a directional antenna. So how do you keep track of your drone when it's moving sideways ? If it gets out of the line of sight and Fresnel zone, you'll loose the signal very fast. How do you cope with that ?

I tried to make a connection between my nRF24L01 modules. When I pressed the tactile switch on the transmitter side, the LED on the receiver side instantly turned on but when I released the switch the LED did not turned off at all (it turned off sometimes but it delayed by 5 seconds after I released the switch). What can I do?

Please talk about how to add a barometric sensor to an Arduino drone please 🙏🙏🙏🙏

Thanks. I have used nrf in a project but after 3 to 4 months it starts to loose its connectivity and I am forced to replace it with a new one. why this happens? Is the life span of the modules so low? or Is it me only who encountered this problem.

please making nrf24l01 module for telemetry drone & convort spi to ttl serial

James Bruton seems to also like this modules quite a bit. Would you also trust a multi-thousand dollar device to the stability of these modules? (For example, a full-size R2-D2)

Please make videos with using HC-12 modules

mine even burned out my 3 nanos, the last one bricked success accepting sample radio transmission but ended up the rx led keep on and cannot be communicate with IDE anymore

Excelente vídeo, vai ajudar muito pois estou panejando fazer um rádio com esse módulo, obrigado pelo vídeo, este canal está entre os melhores que existe. (Excelente video, me ayudara mucho porque estoy planeando hacer una radio con este modulo, gracias por el video, este canal es de los mejores que hay.)

So a step down power supply is not recommended to reduce to 3.3v?