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Questions tagged [nrf24l01+]

An ultra low-power transceiver for radio communication in the 2.4GHz ISM band (Industrial, Scientific, and Medical). Commonly used by tinkerers because of its low cost and its easy to use SPI interface.

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1answer
226 views

Nrf24l01 sending multiple signals [closed]

I have 2 arduino nano and have setup them as a transmitter and reciever. I press a button on the transmitter and the reciever lights up the individual addressable LED sequence as programmed. The ...
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1answer
146 views

Using mills() in place of delay() on relays not getting solid switch over

I know I should post some code that maybe cleaner but really I am just in need of a answer to a problem I seem to run into a lot when using mills() in place of delay(), whilst making a Christmas light ...
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1answer
406 views

How to connect NRF24 receiver and Micro SD Card Module to Arduino UNO

I would like to know how to connect a NRF24 receiver and Micro SD card module to Arduino board. I have already connected the NRF24 module to the arduino board but now i can't connect the Micro SD card ...
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3answers
851 views

How to integrate nRF24L01 to esp8266 nodeMCU? [closed]

I can't seem to integrate an nRF module to my nodeMCU. I just want to verify my code but an error message keeps popping up Below is the sketch: #include <SPI_Class.h> #include <nRF24L01.h&...
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3answers
176 views

3.3 V Arduino Pro Mini and nRF24L01 issues

I have a 3.3 V Pro Mini connected to nRF24l01 as xmtr. The nRF24L01 does not respond to the Pro Mini. Any help will be appreciated. I have attached the print detail output: Transmitter 2 Started ...
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1answer
98 views

nrf24l01+ contradicting itself?

I have recently bought a few of these chips on boards along with some "adapter boards" which supposedly regulates the 5v to propper 3.3v with the required capacitors. So power supply shouldn't be a ...
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1answer
77 views

Can you use a RF remote with nRF24L01 and Arduino?

I recently bought a 10 pack of RF transceivers (nRF24L01). I wanted to know if its possible to pair one with an RC drone controller. I can't seem to find any ways to do this through google. If this ...
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2answers
1k views

How to automatically reset the nrf24l01+ with code?

I have two separate nrf24l01+ connected to two different Arduino UNOs, one as TX and the other as RX. The problem is the connection stops after a while between them. On the Arduino COM screen I have ...
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1answer
203 views

NRF24L01+ - After stopListening, can't write data

Okay so this is the code for my receiver. This is quite confusing so let's dub Receiver = DEVICE 1 and Transmitter = DEVICE 2 DEVICE 1: NRF24L01+, HC-05 (Bluetooth) DEVICE 2: NRF24L01+ So DEVICE ...
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3answers
145 views

nrf24l01 fried when supplying 6.5V to VIN?

I have two Arduino Unos (One clone, one genuine) and I'm trying to make a remote and a base station. Got everything working flawlessly, (Using RF24 library) and the last piece of the wiring was to get ...
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2answers
202 views

Arduino and RF24 library: communication stops after short amount of time

I am using two Arduino Unos, NRF24L01+ transceivers, and a few components as per this site on which I am following the second tutorial on this page: Arduino Wireless Communication – NRF24L01 Tutorial. ...
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1k views

NRF24L01 writing fail

My arduino uno with the NRF24L01 combination gives failed messages on writing. Using the basic example code 'getting started' literally copied from: http://tmrh20.github.io/RF24/GettingStarted_8ino-...
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75 views

One shift delay in receiving the response messages when using two nRF24L01 to communicate with each other

When I send "a" from the Serial Monitor of the slave, on the master slave window it will show "car1_place_2_go = a" then it should show on the slave Serial Monitor "a" but it doesn't show up in the ...
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2answers
381 views

how to know the channel i receive information from when i use nRF24L01 to connect between 3 of them

i am using nRF24L01 to connect between 3 of them ( 1 is master and the others are slaves) and i am using nRF24 library , my problem is that when the master receive something from the other slaves and ...
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1answer
401 views

Wireless Communication with NRF24L01+

I have decided to use NRF24L01+’s for my Arduino project for wireless communication. I am using the RF24 library by TMRh20 to talk back and forth. Github Link: https://github.com/nRF24/RF24 I want ...
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1answer
208 views

Problem while connecting two arduino with NRF24L01

I am a beginner in Arduino programming so that program is also little bit lengthy sorry for inconvenience. I have make a program for wire less controlling of a servo motor and LED(7 Nos.) using ...
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78 views

Set up mesh network with RF Transceivers

I would like to set up a mesh network of Arduinos with the following features/capabilities: No master node Arduinos capable of bootloading other Arduinos through RFs Capable of communicating over TCP/...
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1answer
460 views

Trouble with NRF24L01

I've been trying on and off to try and get my nrf24l01's working for some time and they never seem to work. Right now i'm just trying to turn a led on and off over the radio and it isn't working. ...
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1answer
548 views

Printing transmission data from nRF24L01+

I have a beginner's problem. I have 2 nRF24L01+ devices. They are communicating with each other great, and I can talk with the nRF via SPI. The problem is I want to display, on the serial monitor, ...
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2answers
264 views

Arduino + nRF24L01 + ESP8266 mod

I was wondering if it is possible to connecting two Arduino boards with each other (Uno + Nano) using an ESP8266 mod on one of them and an nRF24L01 on the other board? I have seen lots of details of ...
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1answer
92 views

Adadfruit Trinket software not running on ATtiny85

I have an application that uses a pair of nRF24L01+ as a simple RF link between a camera PC sync output and a set of LED flashes. The important factors are power and low latency - hence the 2.4GHz. I ...
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604 views

NRF24l01+ works only when touching its antenna

I have two simple NRF24l01+ (with range of 200m) and two NRF24l01+ with range of 1km.and two socket adapter. or what I have and I have two good library with names RF24 and RF24-master . problem ...
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394 views

NRF24L01 one tx many rx

Pipes and Channels...I realize this type of question has been asked to death but I have not yet found a clear answer...the project has 3 or more transmitters each capable of sending to any of the same ...
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2answers
2k views

Powering an Arduino Mini Pro using a CR2032 battery as a remote control

I'm looking into making my own remote control using an Arduino Mini Pro and some RF transceivers. The receiving end won't be a problem, but the remote will. I want to make it as small as possible and ...
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1answer
492 views

Having trouble passing data through RF24

I have three RF24, all of them are connected to one arduino-uno each. The first one has sensors that sends data to the second one then the second one passes it to the third one. The first pass from ...
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244 views

Problem communicating between Uno's with nRF24L01 modules

I am trying to get 2 Arduino Uno boards to talk to one another using 2 nRF24L01 transceiver modules. I confirmed the wiring was correct and the modules indeed worked by uploading the GettingStarted ...
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1answer
300 views

Need help with nRF24L01 and Arduino decoding and receiving [closed]

A month ago I bought a Chinese drone, remotely controlled by: SM-217-BKT v5 controller, which uses 2.4GCOB-1A transmitter. My idea was to drive a drone with its "memory", I mean: Start the drone and ...
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0answers
2k views

Using signal strength feature of nRF24L01 module

This is a walkie-talkie project and this circuit really worked, voice can be transmitted from one nRF module to another nRF. Additionally, I want to observe how well the signal strength is, by ...
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0answers
123 views

Combining mysensors with SD card (on an Ethernet Shield v2)

I'm trying to combine a MySensors network with the usage of a SD card. Currently I'm working with the SD card reader on the EthernetShield v2. The NRF24L01+ chip I'm using is also using SPI but we ...
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117 views

R24 Incompatibility with TimerOne on Nano

I am attempting to build a sketch on a Nano which receives a regular pulsed signal from an NRF24L01+ board and uses the time-interval between pulses to generate a regular pulsed output generated by an ...
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1answer
309 views

Error using nRF24L01+ with ATmega328P-PU. Works fine on Uno

I am trying to use a nRF24L01+PA with an ATmega328P minimal breadboard system. I first connected the module to my Uno and verified it with the "scanner" example sketch from the rf24 library, which ...
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1answer
1k views

Sending data by nRF24L01 with Arduino

Can I send data using nRF24L01 with Arduino through multiple pipes? As by using the RF24 library, I can send data through just one pipe and receive on the 6 pipes that nRF24L01 has.
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1answer
2k views

RadioHead library nrf24 sending and receiving struct data problem

I am using RadioHead library for the communication between nrf24l01. I am sharing the snippet of my code below because the code is too huge. The problem i am facing here is on the receiver side i am ...
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2answers
464 views

Arduino with nRF24L01

I am using nRF24L01 with Arduino Nano and Mini. I feel they are very useful when we want to connect multiple Arduinos together. In market we can buy Arduino with WiFi and Bluetooth, why don't they ...
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2answers
1k views

nRF24L01 not communicating

I have been using two nRF24L01 to communicate with each other using a simple Arduino Uno Board. It worked for 5 days and now all of a sudden it is now working. I tried to change the modules and the ...
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2answers
1k views

NRF24L01 receiving even if no data sent

I am using nRF24L01 to communicate between two micro controllers. Both are Arduino Uno. The question i have here is , even if i do not send any data from sender to receiver , the receiver device is ...
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1answer
1k views

Using Raspberry Pi to Receive Float from Arduino using NRF24L01

Good day. I've been learning on how to transfer data from Arduino to Raspberry Pi wirelessly using NRF24L01 based on the following reference: Raspberry Pi 3 Tutorial 14 – Wireless Pi to Arduino ...
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0answers
1k views

CRC usage when ack disabled in nRF24L01

In the documentation of the nRF24L01 library I use (library), the CRC state (on/off) and length can be set or get. It seems to be used for auto ack, but when I switch auto ack off, what is the use of ...
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1answer
235 views

Multiple SPIs on one Arduino [SOLVED]

Setup I have 2 Arduinos... each has two 2.4 GHz nRF24L01+ transceivers (so in total 4). Per Arduino, one is only for transmitting, while the other is for receiving (to prevent the need for switching ...
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1answer
119 views

More missed messages with longer cables with nRF24L01+?

I am using nRF24L01+ 2.4 GHz transceiver. When I connect them directly (with SPI pins 10..13 from Arduino) to the adapter board for the nRF24L01 I get occasionally errors (meaning the receiver does ...
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1answer
164 views

Two nRF24L01 radios per Arduino

Due to the results of my previous post (Slower nRF24L01 round trip delay than expected) I found out that it will be quite difficult to reach my latency requirements. I am thinking about using my own ...
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0answers
2k views

Slower nRF24L01 round trip delay than expected

Short/summary I expected that the round trip delay of a nRF24L01+ would be less than 1 ms. In practice I see around 3 to 5 ms and other sources have similar values. Does anybody know why this round ...
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1answer
874 views

Modified Mesh networking using nrf24l01

I am trying to make a mesh network of three nrf24l01 nodes in which all three are transceivers, such that all three are in a line. The modification I want to make is that if two end nodes are not able ...
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1answer
500 views

Tracking one Nrf24l01 by another [closed]

I am working on an Asset locator using Arduino and nrf24l01. I want one of the nrf24l01 to track another which is attached to an object. How can it be done?
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1answer
2k views

Void value not ignored as it ought to be

im trying to build an rc plane using arduino nano and nrf24l01 as receiver but im having some issues in the code it has error on the line done = radio.read(joystick,sizeof(joystick)); which says ...
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1answer
272 views

Incorrect data being received on RX of NRF24L01P

I am running a setup of two NRF24L01P's on homemade code where the TX sends an analog signal fed through a standard pot, and the RX simply prints out the signal. But the RX seems to be getting ...
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2answers
728 views

Unable to compare char from radio (RF24)

The code below is receiver code using nRF24L01. In the loop section I'm comparing the char that was being sent from the Arduino transmitter. In this case the char array says "I'm off" just like the ...
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1answer
437 views

How can I use the NRF24L01 modules without a library?

The datasheet is too intimidating for me, and I dont want to use the libraries available. Hence, I am looking for some clarity on this matter.
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1answer
2k views

Problem with using multi-node nRF24l01+ with Arduinos

I have 3 nodes in my system. One centralNode and two sensor nodes (right and left). Sensor nodes transmit data to the centralNode and receive from it. centralNode may transmit to both nodes and ...
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2answers
388 views

nrfl2041, WIFI, bluetooth, xbee, zwave, other wireless communications [closed]

Have a project using up to 200 sensors. communication method needs to be wireless. Sensors need to communicate data to the cloud or to a local storage device. Data is transmitted 6 to 24 times per day ...