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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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: https://www....
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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 ...
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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 ...
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Connecting nRf24L01 to Atmega328PU with external 8Mhz Crystal problem
I am trying to fix the problem of communicating between two nRf24l01+ together, one connected to Arduino Uno and another connected to Atmega328PU with 8Mhz external crystal.
The bootloader on ...
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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>
#...
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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 ...
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How to connect NRF24L01 to Wemos D1 R2
I have troubles to connect a NRF24L01 to a Wemos D1 R2 board. I succeeded on an Arduino Uno. Does anyone knows the pinout?
I used (same as with Uno):
D13 - SCK
D12 - MI
D11 - MO
D8 and D9 for CE and ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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
#...
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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 ...
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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 ...
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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 ...
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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 ...
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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 <...
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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. ...
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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 (...
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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 ...
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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 ...
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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>
#...
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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 ?
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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', '...
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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 ...
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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 --...
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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(...
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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?
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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 ...
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Combining an NRF24L01 transmitter/receiver with an Adafruit Motor Shield V1?
I'm making a vehicle project as a way to learn Arduino. I've set up motor control for a number of DC-motors plus a servo via an Adafruit Motor Shield V1 that I picked up.
Everything works fine, but ...
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RFMesh (NRF24) for STM32F1
I wanted to know the RFMesh library available for Arduino Uno can be used for STM32F1? Will it work? Or they have seperate set of library for STM32
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Understanding NRF24L01 specifications
I was reading this tutorial about the NRF24L01 and came across a few terms which I did not clearly understand.
It uses the 2.4 GHz band
Does this refer to the frequency of the EM waves that the ...
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Bluetooth module vs wireless module Arduino
My main question is, what is the main difference between HC-05 Bluetooth module and NRF24L0 wireless module?
Which should I buy?
Which makes these 2 modules different than each other?
Which one should ...
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What NRF24L01 module is this?
I received my NRF24L01 Module today but I'm having a hard time finding any resources about this particular combination of modules!
https://i.stack.imgur.com/Tiwyj.jpg
I tried searching up the v200 ...
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Sending data struct with 2 int fields from Arduino to Raspberry via NRF24L01
I'm trying to do wireless thermometer on max31865 arduino and nrf24l01 but I'm having problem sending whole data struct I can send int or char arrays but when I try to send whole struct I got output ...
