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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problem with Arduino robotic hand, nrf2401 red light

I'm making a robotic hand and I upload code to both the transmitter and receiver, however when I bend the flex sensor the servos don't move but instead the nrf2401 just has a singular red light on ...
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31 views

nRF24L01 only getting 10 meters range!

I am making a project where I need to communicate between two devices that are about 300-500 meters apart and might experience a lot of RF interference and obstacles. So I thought for initial testing ...
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15 views

Sending Strings from NRF24L01 to app

I want to send pushbutton status from the nrf24l01 module to the app named nrfConnect. I could only find libraries that allow me to send float values. How could I send String values to the app? Thank ...
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24 views

How to fix power overload when nRF24L01 connected for voice+gyro based headmouse?

For my head mouse project which is based on the voice recognition module V3.1 for left click, double click, right-click operations, I am facing a problem. I am using 433Mhz Radio Frequency one-way ...
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25 views

nRF24L01+ radio not transmitting anything but says it is

I have a nRF24L01+ radio that was working like a charm for many months now, and a few days back, I was trying to send something and then receive it. The transmitter initialized properly and said it ...
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37 views

nRF24L01 - Measuring distance using time elapsed

For school usage, my team and I are working on a wristband that will alert the user if they are too close to another wristband (for social distancing). The problem is measuring distance using radio ...
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74 views

NRF24L01 Transmission Problems between Arduino UNO and Arduino Nano

I'm a beginner in using NRF24L01 tranceiver module. I tried sending a simple "Hello world" using Arduino Nano and a Arduino UNO with the use of two NRF24L01 modules. I don't get any output ...
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22 views

Motor noise on my arduino RC?

So I wanted to make a rc car based on two arduino nanos, two nrf24l01 (rx and tx), and a pololu brushed motor driver (this one) and it worked, more or less. Sometimes it worked very well and ...
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29 views

Arduino Nano-combo NRF2401

I am using two nano-combo for a RC car and when the remote emitter battery is too down if the car was running and battery finally empty the car was still running...is there any way by programming to ...
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22 views

Trouble with basic communication between two NRF24L01 modules

Introduction I am trying to setup a radio communication using the NRF24L01 module because I want to use it to control a tank. The first thing I did when I got the modules was watching some basic ...
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43 views

NRF24L01 +pa +lna modules do not communicate

I am building an rc airplane and I want the controller and the plane to communicate using 2 NRF24L01 +pa +lna modules. I am using an Arduino UNO and a Mega. I hooked them up corresponding to this ...
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57 views

i build quadcopter using USB HOST SHIELD + NRF24L01 but the data transmit is wrong

I am building mini Arduino quadcopter project. I am using USB host shield for joystick support and nrf24l01 to transmit the data. Unfortunately, I got wrong data transmitted at the receiver and tried ...
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34 views

nrf24L01 with/without antenna

the function write in nrf24LO1 (without antenna) works perfectly but in nrf24LO1 (with antenna) not works. why?! the code #include <SPI.h> #include <nRF24L01.h> #include <RF24.h> #...
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49 views

nRF24L01 not sending and receiving

I used a simple example of sending and receiving between nRF24L01 (GettingStarted in RF24 library and nrf24_server/client in RadioHead library) but the two examples are not working, I used the ...
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24 views

NRF2401 doesn't receive data [duplicate]

i have bought a module for transmitting data threw radio but with the NRF24 and the exemple code of the RF24 libary by doing exemple/RF24/GettingStarted i think to have something weird, i don't thing ...
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51 views

NRF24I01 with antenna Communication Delay

I am doing my senior design project which is due in a week, I am currently using the NRF24I01 with antennas for both the transmitter and the receiver. I am building a robot that is suppose to climb a ...
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29 views

Arduino with NRF24L01. Getting correct data from unkown transmitter

I want to use my Arduino with this: VAC8010F measure unit. It communicates with NRF24L01. The problem is I simply don't know which band or information it is receiving. Can somebody help me with this? ...
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Project concerning wireless communication between raspberry pi (transmitter) and arduino uno(receiver) using nrf24l01. Receiver not working

We are trying to send a message using NRF24L01, raspberry pi as transmitter and arduino uno as receiver. Our concern is, the receiver arduino might not be working because we are not getting the proper ...
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19 views

Help with Receiver / Transmitter (nRF24L01+)

Dear fellow Arduino users, My two friends and I are having trouble on an Arduino project we are working on. We are using two Arduino Uno's and trying to have one of them send a signal to another one ...
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28 views

Sending command through nRF24 with mixed data type

I need to send mixed data through nRF24 with the usual nRF24.h library, in the form like "E"(a char), 123(int), 123(int) "G"(a char), 123(float), 123(float) "X"(a char), 123(int) I thought about ...
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67 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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41 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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31 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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137 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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111 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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176 views

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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53 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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70 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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22 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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24 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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109 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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25 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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48 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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181 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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43 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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143 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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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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218 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
96 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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161 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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80 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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2answers
546 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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116 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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518 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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128 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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386 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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499 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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1answer
448 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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1answer
422 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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143 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 ...

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