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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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Rf receiver for simple use case [closed]

First of all I'd like to say that I'm new to Arduino, so I figured a simple project like "remote control button pusher" was a good place to start. I found out my phone has an IR blaser so I ...
Sai Dharshun's user avatar
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87 views

nRF24L01 simple bidirectional issue [closed]

I'm making a simple project with an Arduino and a nRF24L01 module. I want two identical circuit, lets say project_A and project_B. Both of them should be on 'Receiving' mode when idle. If project_A ...
Kokachi's user avatar
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Error: void value not ignored as it ought to be done = radio.read(&Irms, sizeof(float));

Good morning everyone, I had this sketch that worked now when loading the program gives me an error: #include <Wire.h> #include <SPI.h> #include <nRF24L01.h> #include <RF24.h> ...
ksalva's user avatar
  • 9
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0 answers
24 views

nrf24 does not show all characters in the receiver

I am using Arduin mega (with RTC and DH22) and I wanna receive this values in receiver (UNO R4). The main problem is that in the receiver serial monitor does show all characters. When I increase the ...
saeid mohammadzadeh's user avatar
0 votes
0 answers
149 views

Arduino + NRF24L01 mesh network implementation

TL;DR I want to produce a large self configuring wireless mesh network using Arduinos and NRF24L01s transceivers. These have been chosen because they are capable of achieving the requirement and the ...
Russell McMahon's user avatar
2 votes
1 answer
234 views

ESP32: nRF24L01 receives no data

Using two, nRF24L01 with two, ESP32 DEVKIT V1. Trying to setup RF24 Library example, "Getting Started". Able to transmit on both nodes, however, there is no payload received when switching ...
William's user avatar
  • 85
1 vote
2 answers
274 views

How to connect nRF24L01+ with Arduino Giga R1?

I have bought 2 Arduino Giga R1, 2 nRF24L01+ modules and 2 nRF24L01+ adapters. I am using the Arduino SPI in order to connect it with nRF24L01+. And I am using the following code with this change in ...
greg's user avatar
  • 127
-3 votes
1 answer
96 views

RF24 if statements are not reading properly, even if an "if" value is wrong, it still follows the associated code [closed]

My code is taking values from a remote and transmitting the state of it. Right now the states are just 1 and 0, on or off, and is writing over the serial monitor on the transmitting Arduino. On the ...
Bradbut's user avatar
2 votes
2 answers
224 views

Changing SPI ports on an Arduino

My end goal is to read information from an nRF24l01 module connected to my Arduino UNO R3, and generate an interrupt whenever a message is sent to the Arduino. Now, I have read that for Hardware ...
insipidintegrator's user avatar
4 votes
1 answer
228 views

Connecting nRF24L01 to ATmega328PU with external 8 MHz crystal problem

I am trying to fix the problem of communicating between two nRF24L01+ together, one connected to an Arduino Uno and another connected to an ATmega328PU with an 8 MHz external crystal. The bootloader ...
Jon depoy's user avatar
2 votes
1 answer
394 views

NRF24L01 PA+LNA With Arduino

I am using the NRF module for remote communucation.I have been many research about nrf but my nrf module is not working This is my tranmistter code: #include <SPI.h> #include <nRF24L01.h> #...
koraysonal's user avatar
3 votes
1 answer
417 views

How do I use a transmitter and receiver to send string messages conditionally to a receiver?

I'm working on a project to build a plant monitor that works from the outside with Arduino that picks up light and water values from it's environment then uses a nRF24L01 with an antenna and I've come ...
Mario Ronci's user avatar
2 votes
1 answer
704 views

How to connect a NRF24L01 to a Wemos D1 R2

I have troubles to connect a NRF24L01 transceiver to a Wemos D1 R2 board. I succeeded on an Arduino Uno. Does anyone know the pinout? I used (same as with Uno): D13 - SCK D12 - MI D11 - MO D8 and D9 ...
FredV's user avatar
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3 votes
0 answers
227 views

Raspberry pi pico (Arduino core) not initialising SPI correctly for NRF24l01

I'm working on a project where i have a Raspberry pi Pico connected to a NRF24l01+ to send some data. However i'm not recieving any data on the reciever and i think that its because the SPI bus is not ...
Earthbound Ruben's user avatar
3 votes
1 answer
367 views

Arduino hangs / freezes - can't figure out why

I am building a remote controlled boat. My remote project freezes after an arbitrary amount of time. The serial stops output, the OLED doesn't update anymore and instructions are not send / received ...
user2863494's user avatar
1 vote
0 answers
201 views

Is my nrf24l01 radio module broken?

I was trying to use two Arduino Nano connected to two RF24 modules to build a remote control boat. I self-assembled both the remote and the receiver circuit following the skematic suggested in that ...
Dario De Salvador's user avatar
1 vote
2 answers
236 views

Will many nrf24L01 radio modules running at the same time cause interference?

I am working on a battle bot type of project where their will be 4 transmitters communicating with 4 receivers attached to the robots in the 4 foot x 4 foot playing field. Are their any complications ...
Rishikesh Anand's user avatar
1 vote
0 answers
135 views

NRF24L01 modules fail to stay connected. Work intermittently

I am trying to get the NRF24 Modules to work but all I get is short lived moments of when it works. I am using the transmitter to send signals to the receiver, which in turn sends a signal to the ...
Alen Ramic's user avatar
1 vote
0 answers
116 views

Read State from Variable

I am attempting to use radio modules to receive a value from a sensor, either 1 or 0, and complete an action. The only problem is that I would like the action to only complete once per state change, ...
Noah's user avatar
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2 votes
0 answers
257 views

RF24 Network. More than one payload

I am using Nrf24Lo1 to communicate a payload of button commands resulting in leds being lit on second. This is working OK. My aim is to have one as Tx and more than one as RX, I can find several that ...
RogerA's user avatar
  • 21
-1 votes
1 answer
67 views

Cubecell AB01 with nRF24L01

I have been trying to connect a nRF24L01 to a Cubecell AB01 without much luck. Most of the time, the radio.available() function always returns true resulting in a bunch of garbage. I have figured out ...
Joris Gravesteijn's user avatar
1 vote
1 answer
105 views

how to detect when a transmitter is turned off?

Using the nrf24l01 wireless module I want to control a led with the sketch below. The transmitter automatically sends data at intervals of one second continuously and when the receiver counter reaches ...
Sabri73's user avatar
  • 51
6 votes
0 answers
660 views

nRF24L01 continuously reading closed pipe

I am testing communication between two nRF24L01 modules. The receiver is getting the transmitted message but is also continuously reading (null) data from a closed pipe? I am using the RF24 by TMRh20 ...
PyNZ's user avatar
  • 121
0 votes
1 answer
198 views

nRF24L01 programming issue

I'm new to nrf24l01 . I have a two nrf24l01 they both works very well ,I tested them with a simple LED blinking program. Now I write a program for both transmitter and receiver to just send message ...
nskaran's user avatar
1 vote
0 answers
105 views

No communication between two stations that include Arduino Nano and nRF24L01

I'm struggling to establish a link between two Arduino Nano using nRF24L01 (the module that contains PA and LNA). I assume I made a coding mistake (May be in the setup method?), and I need help in ...
user1511360's user avatar
1 vote
0 answers
339 views

NRF24L01 receiver flooded with data packets

Following this tutorial I attempted making an NRF transmitter and receiver using an Arduino Nano. On the transmitter side I used the following code: // SimpleTx - the master or the transmitter #...
Ranjit Pal's user avatar
3 votes
1 answer
2k views

NRF24 and Arduino Nano Every usage

Im building an RC car project and using 2 NRF24's for communication. I own an Arduino Uno, Nano and Nano Every. The NRF's work great with the Uno and Nano in any combinations but using a Nano Every ...
Sumemerboy's user avatar
0 votes
1 answer
3k views

RaspberryPi Pico SPI and nrf24l01

I am programming a RaspberryPi Pico with the Arduino IDE. Works pretty well, but now I try to control an nrf24l01 module. My code compiles but I do not know on which pins the SPI bus has to be hocked ...
qubit's user avatar
  • 360
9 votes
5 answers
2k views

Same structure taking different memory space on Uno and NodeMCU ESP8266, leading to data corruption when transferring via nRF24L01+

I'm trying to transfer data between a Arduino Uno board to a NodeMCU ESP8266 board, using nRF24L01+ transceivers module and RF24 library on both side. The data I'm transferring are stored in a struct ...
Vincent's user avatar
  • 232
2 votes
1 answer
163 views

SPI.begin doesn't work after tristate

I am working on a ultra-low power project using an ATMEGA328P, a nRF24L01 and a 0.47F super-capacitor to measure various sensors akin to Gammon's solar power project. I have been having problems with ...
jhorv's user avatar
  • 41
1 vote
0 answers
861 views

Using BLE via NRF24L01 to communicate with Android phone

I have been going through a tutorial about this, based on the example code for the "BTLE" Arduino Library. This is my program: #include <SPI.h> #include <RF24.h> #include <...
Thomas Hirsch's user avatar
1 vote
0 answers
37 views

How can I send 2 orders using nRF24L01

My project is to control a servo with a joystick using nRF24L01. I have this code working well, but the problem is that I want to add a lamp in the receiver side, and a switch in the transmitter side. ...
wael's user avatar
  • 11
1 vote
1 answer
628 views

Message is sent multiple times from one arduino to another, using nRF24L01

I am trying to build a bidirectional communication channel, using nRF24L01 and two arduinos. The message is introduced using a button (but) in Morse code, decoded and then sent when another button (...
MarryPoppins's user avatar
1 vote
0 answers
145 views

Communication code between nrf24l01's suddenly not working. Hardware is fine

I specifically had saved code for the purpose of checking the connection, but it doesn't seem to work anymore. All the examples from this simple tutorial work, so it can't be a hardware issue. Maybe ...
Maksiss's user avatar
  • 11
0 votes
1 answer
63 views

Add nRF24L01 to a project

I Have a Liquid Level Project that Currently uses an Oled display. I have just discovered the existence of the nRF24L01 wireless communication module; and it is exactly what I need to make my project ...
SV Savannah's user avatar
2 votes
0 answers
33 views

Arduino NRF24LO1

I have a problem with transmiter (Arduino uno) and receiver (Arduino nao). When I am trsmiting that I receive that: An this is my code for receiver #include <SPI.h> #include <nRF24L01.h> #...
jaqb's user avatar
  • 21
1 vote
0 answers
615 views

Interfacing Arduino nano ,adxl335 ,nrf24l01

I'm trying to make a project with this conection diagram but I don't think it's correct , and my adxl sensor died . Can you help me with a modified one ?
Geo's user avatar
  • 11
3 votes
1 answer
237 views

Nrf24l01 smd pcb placement tips

I am working on pcb design with nrf24l01 smd. I have read somewhere that nrf24l01 module has problem while communication when it is placed with its antenna within the pcb. I want my module to be ...
Anmol Kumar's user avatar
2 votes
0 answers
145 views

nRF24L01 +pa +lna link does not communicate

I’m trying to create a link between two nRF24L01 units. Each nRF24L01+-based module (purchased) is connected to Arduino Nano on a custom-designed PCB. The printed wiring is per the hardware ...
user1511360's user avatar
1 vote
0 answers
163 views

NRF24L01+PA+LNA communication problem

I'm trying to communicate between two NRF24L01+PA+LNA modules. I know that NRF24L01+PA+LNA modules are consuming a lot of power and here is my 3.3V power circuit. The LM317 datasheet says it can ...
Alatriste's user avatar
  • 111
1 vote
0 answers
827 views

Power down NRF24 to conserve battery life using MOSFET

I'm using a Pro-Micro to send messages using NRF24 module from a remote location, using batteries (later on, will be recharged using solar panel). To conserve power, Pro-Micro wakes up every 30 ...
guyd's user avatar
  • 1,049
1 vote
0 answers
125 views

Problem communicating Using Nrf24l01+pa+lna, I am receiving 00 Hex

I am trying to build a wireless switch. At one end, I have Arduino Uno connected to Nrf24l01+pa+lna module. While at the other end there is Arduino Nano connected to Nrf24l01+pa+lna and a relay. I ...
usmanarif's user avatar
1 vote
0 answers
147 views

Getting Nrf24l01 modules to work!

I am at my wit's end with these Nrf24l01s. A bit of history: I have ordered about 25 of these, tried the adapter board, read every article, tried every sketch (including Robin's tutorial), powered the ...
Rick E's user avatar
  • 11
1 vote
0 answers
94 views

Communication between two nrf24l01

i can't figure this out, i have a task to get data from RX module that led has turned on. The Idea. I press push button on TX part, and led diode turn on, on RX part. Then RX send's data to TX that ...
Jānis's user avatar
  • 59
3 votes
0 answers
495 views

nRF24L01+ problem with receiving response

I'm sending currently data from a Raspberry to an Arduino, but I have a problem with receiving response from the Arduino back to the Raspberry: Sent the message: ['H', 'i', '.', '.', 'A', 'r', 'd', '...
NezumiRyu's user avatar
0 votes
1 answer
936 views

nRF24l01+ Problems. Data is being recieved as 0

I am trying to transmit the values of three potentiometers via the nRF24L01+ (w/antenna). I am using the regulator designed for the nRF24L01+, so I don't think I need to add a decoupling capacitor. I ...
Robert Spiers's user avatar
1 vote
2 answers
873 views

NRF24 and usb digispark

I want to connect NRf24 module with digispark and use USB capabilities at same time. currently, i use this conexion diagram: NC PB5 1|o |8 Vcc --- nRF24L01 VCC, pin2 --- LED --...
Robotechnic's user avatar
-1 votes
1 answer
1k views

RF24- Splitting and sending a longer than 32 byte payload

In order to send a long payload I've created the following function: void splitMSG(const char *msg, const int arraySize, const int len) { Serial.print("Array size: "); Serial.println(...
guyd's user avatar
  • 1,049
2 votes
0 answers
50 views

How to connect two arduinos with smartphone wirelessly

I'm working on a project that have two separate setups for Arduino, each Arduino read sensors and send data to smartphone. how to connect two Arduino then send all data to smartphone over Bluetooth?
Danish's user avatar
  • 21
1 vote
1 answer
8k views

NRF24l01 Channel switching

I have a NRF24L01 radio module. The description indicates that it can work in the ISM frequency range of 2.400 ... 2.525 GHz. The channel step is 1 MHz, and there are 125 channels in total. The ...
Антон's user avatar

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