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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18 views

Arduino camera for drone with nRF24 or LoRa [closed]

I want to fit a camera to a drone with Arduino. The radio system was available with nRF24 and LoRa. I need to find a way to transmit the camera feed/pictures to an receiver, and display it on a screen,...
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1answer
231 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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10 views

RF24 mesh with arduino 328p with 100 nodes [migrated]

I have explored RF24Ethernet library and I have tested same with 10 devices and Raspberry as my gateway. All seems to work fine. My question is if I go with 100 sensor nodes with a single RPi, would ...
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29 views

nRF24L01 : transmission fail when receiver is connected in Serial

I have two Arduino Nano communication with radio. One is a transmitter and send simple message : #include <nRF24L01.h> #include <RF24.h> #include <printf.h> #include <...
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1answer
444 views

RF24Mesh master-base node communication delay

I'm trying to build a mesh network using 4 nRF24L01 modules directly connected with Arduino Uno where 1 module is master node and the rest are base nodes. The workflow is exactly as follows I'm ...
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28 views

RF24 code not working:

I watched this video and used his transmitter code and receiver code. However, it's not working. There's no response from the receiver. The transmitter stuck at the loop: if (!radio.write( &data,...
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1answer
98 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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1answer
21 views

RF24 library commands, channel, and address

I'm trying to use the RF24 library for wireless communication. However, it appeared that this library does not have "help" option. There was a keywords file but it did not explain what it does. I ...
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1answer
100 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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38 views

NRF24L01 based project freezes for no good reason

I have built and coded a low power NRF24L01 transmitter and receiver, for purposes of transmitting the temperature of the transmitter's environment. I have used an Atmega328P chip for the project. The ...
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2answers
134 views

nRF24L01 - leaves out end characters during transmission

This is my Master's code. #include <nRF24L01.h> #include <RF24.h> #include <RF24_config.h> #include <SPI.h> RF24 radio(7, 8); const byte address[6] = "00001"; char text[20] =...
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Having problems compiling this code for NRF24l01 on stm8s103f3p6

It said it has mutiple libraries were found for "nRF24L01.h" but i check the Ardurino libraries I can only found one. And it work fine if I compile it to Arduino uno. //Include Libraries #include <...
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2answers
43 views

Why NRF24L01+ pipe has 5 byte address

I am studying NRF24L01+ module. I see, that only 6 receivers can be connected with the transmitter, via their unique pipes. What I can’t get is why the pipe id (address) has 5 long bytes. As to me,1 ...
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1answer
71 views

nRF24L01 with antenna transmitter and receiver

I am trying to use nRF24L01 with antenna in my project, but when I do test with getting start from rf24 master is showing a serial monitor like in the picture abov e. What is the problem here?
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61 views

NRF24l01 receiving only zeros

I want to transmit and receive data with the help of NRF24l01 modules. I tried to deliver joystick values from UNO to UNO but I have trouble about it. In receiver side I have only zeros. I have been ...
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1answer
19 views

I can't receive string that I have sent through nrf correctly

I'm using arduino uno and nrf24l01. to monitor sensor data. But this is the message that master receives: ⸮ this is my slave code. void monitoring() { delay(10); radio.stopListening(); ...
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1answer
2k views

nRF24L01 module using Mirf library was working and then stopped

I have two nRF24L01 modules, they are both attached to a sensor shield that has special ports for this type of module, on Arduino Unos. I have this code on the Arduino that is sending the signal: #...
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16 views

I am not receiveing what i am sending using NRF24L01

I am trying to transmit and receive the value using NRF24L01. I am sending 5 but receiving 0. The code i am using at the receiver's end is #include <SPI.h> #include <nRF24L01.h> #include &...
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1answer
206 views

nRF24L01 using sender as receiver and vice versa with RF24 library

I have two nRF24L01 modules (I tried 2 with antenna and 2 without antenna) paired with their power base module and connected to two different Arduino Mega 2560 boards. I'm able to send from one ...
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1answer
6k views

How to connect NodeMCU to NRF24L01

I need to connect NodeMCU and NRF24L01. where I'm receiving data from another NRF24L01 Transmission. I managed to connect to a WiFi network but the data receiving is not taking place as expected. Here ...
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3answers
984 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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1answer
543 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
38 views

Everything is ready for project . I have one doubt! I am using transmitter + Arduino *Uno*..and receiver + arduino *nano* will it work?

Everything is ready for project except hardware! I have one doubt! I am planning to use transmitter of Arduino Uno and receiver of Arduino Nano. Will it work? Both Uno and Nano obey for same ...
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1answer
60 views

NRF24L01+ changing configuration after startListening

I have been trying to get two Arduino UNO talk to each other via NRF24L01's with TMRH20's NRF24 library. I tried many tutorials and examples and none of them worked. Most of them prints some error ...
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1answer
22 views

In Nrf24lO1 pa+Lna,is there any indication led light?

How do I know that my **Nrf24lO1 pa+Lna ** is working or not? For that any separate led is there for on ?
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1answer
256 views

how to use AckPayload correctly

i'm trying to send String from an Arduino(Uno) using the Serial. to an another Arduino(Uno). using nRF24l01+. and I'm using the library RF24.h the String is sended correctly but I have some problems ...
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65 views

Using MOSI and MISO pins for multiple devices

For the device I am creating, I am hooking up an apa102 led strip to pins 11 and 13 to control each LED. But I would also like to hookup my NRF receiver to the arduino, but I also use pins 11 and 13. ...
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1answer
36 views

Is the code correct? Nrf24l01

I'm am a beginner, so I'm sorry I have written this wrong. Is this piece of code correct? If not where? Transmitter: #include <SPI.h> #include "RF24.h" int* Msg, mSg, msG; RF24 radio(9, 10);...
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100 views

Sending Simultaneous Data from 2 NRF24L01 Transmitters to 1 NRF24L01 Receiver

I'm using three NRF24L01 transceivers, each connected to one Arduino Nano. One of the NRF24L01's is configured as a receiver, while the other two NRF24L01's are set as transmitters. Firstly, I'm aware ...
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1answer
74 views

expected initializer before 'RF24'

The code i make is this */ #include <SPI.h> #include <nRF24L01.h> #include <RF24.h> #include <Servo.h> #define CE_PIN 9 #define CSN_PIN 10 const uint64_t pipe = ...
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3answers
196 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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15 views

Printing inputs in Serial Monitor from Two Different Transmitters [duplicate]

I'm using 3 NRF24L01 transceivers, each attached to its own Arduino Nano. Two of those transceivers are set as transmitters while the third is set as a receiver, and is connected to the computer via ...
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0answers
1k views

Arduino stops working after some receivings from RF

I made a sketch that receives an rgb code from a remote Arduino using nrf24l01 and while it works for the first receivings then it stops working. I placed a testing Serial.println in the loop to test ...
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1answer
188 views

NRF24L01+ Getting Started Acknowledge Failed

I have followed numerous guides and tutorials for getting the NRF24L01+ modules working with an Arduino Uno. I have swapped to a genuine Arduino and tried 4 different NRF modules. All without luck. I ...
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29 views

send data scanner via RF24

I have arduino uno+usb shield+barcode sacnner+RF24 for transmitter and arduino uno+RF24 for receiver. i want to send scanner data to receiver. This is my code //**********************************NRF*...
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0answers
94 views

STM32 Nucleo-L432KC can't send data to Arduino Uno via nRF24L01 module

Hello everyone. First of all, I know you're going to tell me to send my question on the stm32duino forum. But I tried to enter the stm32duino forum and I didn't succeed (I think their forum is closed)...
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1answer
69 views

Serial communication PC to Arduino using C and send via NRF

I'm trying to communicate my PC with an Arduino Mega via serial and after send the message via NRF to another Arduino. But I don't know if the message is send correctly or if it even send the message....
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1answer
54 views

Arduino digital pin status not transmitting via NRF24L01 where as analog pin status is getting transmitted ,Why?

I am currently working with a project using NRF24L01 which I integrated with my Joystick so that I can make it wireless.While transmitting the information in my Joystick to the receiver only analog ...
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0answers
1k views

RF24 - Split data in payloads at sender and then rebuild on receiving end

I'm trying to send some data using nRF24L01+ transceivers, but I need to use 8 byte payloads for reliability. The data I'm sending is much bigger than that, so I need to split it into 8 byte packets ...
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1answer
297 views

How do I feed NRF24L01 from Arduino Pro Mini?

I wanted to control speed of my four coreless DC motors using Arduino Nano. Then I realised my 3.7V 380mAh 25C and 720mAh (110mAh on picture is just to hold my battery's place) 25C LiPo batteries won'...
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2answers
293 views

How to automatically reset the NRF24L01 module

For my home-automation project I'm using several arduino nano's with each a NRF24L01+ module. Each module is able to both receive and transmit with one another. Everything seemed to be flawless for a ...
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4answers
3k views

How to send sensor data from Arduino through NRF24L01 to Raspberry Pi

I am able to send text from the Arduino wirelessly to RPi. I am now trying to send the sensor data I'm measuring to the Pi. This is what I have below: int moisture = A0; int temp = 3; //Skipping ...
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1answer
76 views

NRF24l01 with Atmega 32u4 and internal clock

Will the nrf24l01 work with the Atmega 32u4 if I am using the 32u4's internal clock, or must I have an external clock source?
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126 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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0answers
228 views

Encrypting data between NRF24L01 using AES

I am trying to send encrypted data using AES via a pair of NRF24L01 and two Arduino Uno boards. I have made two sketches but can not get it working. The used library for AES: enter link description ...
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2answers
194 views

NRF24 CE and CSN connections without I/O pins easily accessible

I want 2 Arduinos communicating to each other, but only in one direction. Arduino A = tx and Arduino B = rx. I have this working fine connecting CE and CSN on each NRF24 to pins 4 and 5 on each ...
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71 views

Arduino Sensor Values to Raspberry Pi using NRF24

Im trying to send temperature sensor data through NRF24L01 to Raspberry Pi and read it in Raspberry Pi using python. But the temperature sensor data comes to the Raspberry Pi as letters, which I found ...
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0answers
262 views

Basic communication with nrf24l01 between nodemcu and arduino nano

I spent the last two days to find a way to set up a basic communication between a nodemcu amica and an arduino nano with a nrf24l01 module; all of this without success.. Here the code uploaded on my ...
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1answer
177 views

NRF24L01+ (TMRH20 library): Receiver gets blank data

I am working on sample Arduino project for communication over NRF24L01+ (TMRH20 library), everything is working fine with my example except one issue my Receiver gets message but that message is blank....
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108 views

Can't use MEGA as Transmitter and UNO as Receiver nRF24L01

I have a project with 7 May Deadline, i really need help on this. Here is the problem, I need to use my Arduino MEGA 2560 as transmitter and Ardino UNO(CH340G) as receiver. I can use uno as ...