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
197 views

NRF24L01 integrated antenna exposed out of the box

I'm going to try my hand at making a few sensors that are to report status to a central server. To make them wireless, I'm going with nRF24L01 modules. I intend to enclose the sensors (Arduino Mini ...
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1answer
858 views

Multiple arduino Wireless communication

I would like to know what device and model to use for an application where I will have 1 arduino as a master micro controller waiting to receive data from 5 slave arduino microcontrollers. The Master ...
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1answer
453 views

NRF24L01+ Issues antenna

I have 2x NRF24L01+ communicating but they are unreliable. It doesn't matter if they are right night to each other or 100ft away. For some odd reason when I place my hand on the antenna it work ...
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1answer
493 views

Is it possible to connect NRF24L01 to localhost in laptop without wifi router?

I want to send data from arduino to my localhost port:8080(with ipython notebook) via modul NRF24L01 without WiFi router. Is it possible? If it possible, how to do that? Thank you...
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1answer
1k views

NRF24L01 only receiving zeros

I'm attempting to transmit very simple data across some NRF24l01 modules for testing purposes, and I've been following a YouTube guide. Here is my code: Trasmitter: #include "RF24.h" #include <...
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2answers
81 views

Library using another library

I'm writing library for smart home arduino DIY project. i want to use another library(not written by me). here is the code: boiler.cpp #include "Boiler.h" Boiler::Boiler(int pin) { _pin = pin;...
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1answer
922 views

Not sure I'm understanding pipes for NRF24

I've started working with the NRF24 library for some fun little side projects. I have only gotten through some basic tests but I'm starting to look at ways to tinker with the code. I have more ...
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1answer
850 views

How can I store the received data from nRF24l01+ module in an array (code in description)?

This is my sample RX code for 4 Tx and 1 Rx nRF24l01+ modules. I want to store all the data received from 4 pipes into an array (recArray). #include <SPI.h> #include <nRF24L01.h> #include ...
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3answers
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Can I compile a sketch for my attiny85 without an arduino board?

I have a lot of Raspberry Pi's laying around, so I want to use those to program my attiny85 chips. The problem is that most of the code examples, libraries, and documentation out there assume you're ...
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2answers
1k views

Why does this sketch give MPU FIFO overflows?

I'm transmitting this program over an NRF24l01, data from mpu, and I'm getting a FIFO overflow. Im not sure what the problem is but it gives me a lag when I put it on processing so I know the problem ...
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39 views

Interfacing ArduCam with NRF24L01 to Arduino Uno [duplicate]

I am currently finalizing a purchasing order to get several of the ArduCam CMOS OV7670 cameras. I am purchasing them because they have the capability to return an array of the RGB565/555/444 which ...
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2k views

Issue with nRF24L01 - Module sends a message when it ought to send another

I'm going to explain better: I'm new to Arduino and was experimenting with nRF24L01 in order to make an RC controller. I have 2 circuits, one is the sender and the other one is the receiver (...
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233 views

arduino + mpu6050 + nrf24l01 >>>>>>>>>>>>nrf24l01 + arduino ( Not running fluently)

this is my setup: I have an arduino uno + mpu-6050 + nrf24l01 all attached together and am transmitting data from that mpu-6050 to another arduino with an nrf24l01 attached to it. I got the arduinos ...
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29 views

fob_init(void) code for interfacing the arduino with nrf24l01+

I found this code . I do not understand the fob_init(void) part of the code It will be great if anyone could explain the entire code, if not at least the fob_init(void) part. I am a novice at ...
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2answers
424 views

Powering Arduino Mega 2560 from a Raspberry Pi Usb

I have a Raspberry Pi B+ running 7x24. I have to connect an Arduino Mega 2560 to its USB. The Arduino has only one nRF24L01-PA-LNA powered from its 3V3. Can I power the Arduino from the Pi's USB?
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4answers
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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
5k views

Arduino Nano nRF24L01+ DFPlayer Mini SPI Problem

I'm working with an Arduino Nano board clone (CH340) on wireless control of DFPlayer Mini, transceiver sending a Struct variable with MachinePrefix (just in case), sound type (I have more folders by ...
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0answers
82 views

Communication between 2 nRF24l01s and 2 Arduino unos

I am having a logical error that I can not figure out with the communication. I am communicating fine with the two boards such that I can send and receive data. Code to my Transmitter and Receiver. ...
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1answer
1k views

Microcontrollers with built in HID support

I am trying to build a wireless gamepad for which i am using NRF24l01 module for my wireless need and for Sending data to computer i need an mcu which support to act as hid device. So far, i got ...
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1answer
427 views

RF24 Network and Payload

i struggle to figure out the max payload for the RF24 Network library without payload fragmentation. It uses a NetworkHeader with the Attributes from_node, to_node, id, type and reserved. This must be ...
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1answer
361 views

What is the principle of scanner

I find a 2.4GHz scanner in this web . I want to do same thing in 433 Mhz with SI4463. But I fail to understand it's principle. Who can explain it ? Thanks.
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1answer
432 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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1answer
384 views

RF24 communication between Leonardo and Micro not responding

I have Arduino Leonardo and Micro. I can't manage them to communicate via nRF24L01. I made a receiver and sender sketch to test it and can't see any respond. I tested the same code on two arduino nano ...
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1answer
593 views

MPU-6050 + Arduino Micro + nRF24L01 FIFO overflow!

So I have an Arduino Micro, nRF24L01, and MPU-6050 all attached together and its transmitting information to another nRF24L01 on an Arduino Uno. The problem is that I keep getting FIFO overflow on the ...
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1answer
3k views

Connection between ATTiny85 and RaspberryPi3 with nRF24L01+

I'm hoping someone can help me since I've been struggling with this all weekend. I've got 2 nRF24L01+ breakout cards and I'm trying to send data from a ATTiny85 to a Raspberry Pi 3. My setup is (the ...
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0answers
319 views

Having trouble connect nrf24l01 to arduino micro and arduino uno!

I'm trying to connect a nRF24L01 with my Arduino Micro and Arduino Uno. The Arduino Uno works fine, but it doesn't talk with the Arduino Micro. CE is on pin 7 and CSN on pin 8. I posted the code down ...
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1answer
650 views

Having problems compiling this code for NRF24l01 on arduino uno and arduino micro

I have the library RF24 and everything in my arduino library but for some reason it's not compiling. I don't know why. I posted the code and also the error message that the arduin IDE keeps showing. ...
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3answers
1k views

how to communicate MPU-6050 ( on arduino micro) wirelessly using nrf24l01 to arduino uno? [closed]

I have an Arduino Micro and MPU-6050. I'm trying to transfer the data obtained from the MPU-6050 wirelessly to my computer using an Arduino Uno at the other end. I'm not sure how to make this happen. ...
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1answer
417 views

NRF24L01+ unable to receive data

I have 2 Arduino UNO R3 nodes communicating using NRF24L01+ transceivers with the TMRh20 library. Setup I have original as well as cheaper but 'compatible' arduinos. One of the nodes uses an original ...
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1answer
2k views

How to program an nRFL01 RF module that is connected to a pc via a USB to UART/TTL adapter?

In a few of my previous questions I was told that the nRF24L01 RF Module can be connected to a pc using a USB to UART/TTL adapter. After a bit of research I understand that one way to use it is to ...
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1answer
539 views

Can the EWRF 3022 module be directly connected to the pc totransmit data from the pc wirelessly? [duplicate]

In my project I want to connect my pc to an RF transmitter. The receiver will be connected to an arduino on my robot. However most of the RF modules I looked up couldn't be directly connected to my ...
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1answer
771 views

How to connect an RF module directly to a PC without using an arduino? [closed]

I know that in xbees i can connect the xbee module directly to my pc using the USB explorer. But I'm using the nRF24L01 RF modules. I want to transmit from my pc, via the RF transmitter to my RF ...
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2answers
79 views

What options do I have to wirelessly connect my computer to an arduino?

For my project I have an arduino Uno connected to my robot. I need to control it wirelessly. I have thought of using a bluetooth module , but I need a larger range. Then I thought of using an RF-...
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1answer
2k views

Trouble connecting Arduino Pro Mini (Atmega328, 3.3V) to nRF24L01 over SPI, receiving all 0 values when I use radio.printDetails();

I am trying to connect my Arduino Pro Mini 3.3V to an nRF24L01 transceiver and cannot see what I am doing wrong. I've checked my wiring a million times because the problem hints there is an invalid or ...
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0answers
720 views

Arduino UNO with NRF24l01 + touch screen [closed]

I have an Arduino UNO, a NRF24L01 as receiver (receive data from elsewhere), and this touch screen from Adafruit for display and control. The Adafruit TFT is a shield so it fits the UNO perfectly. ...
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1answer
367 views

Connecting Saleae Logic 8 to MISO (pin 12) on Uno 3 w/ NRF24L01+ halts program

I have an NRF24L01+ with the base module (regulates voltage) connected to an Arduino Uno 3. I'm using the tmrh20 NRF24 library and am running one of the example programs. I'm trying to sniff the SPI ...
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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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2answers
1k views

Multiple transmitters and problem with ref

There are three Arduinos on a model. Each of them has a DS18B20 Dallas temperature sensor and an nRF24L01 antenna wireless communication. There is also an independent device consisting of an Arduino ...
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0answers
63 views

Inexpensive way of connecting a lot of modules on a distance

I need to connect a lot (~100) of modules with a computer (Raspberry pi). The modules are based on Arduino micro and are very simple. They will be spread around, but for the two adjacent the distance ...
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1answer
1k views

nRF24L01+ packet loss caused by Arduino reading and communicating with sensors

I have 2 Arduinos communicating with each other. My problem is that one sends packets every 1.5-2 seconds but the other Arduino does sensor reading and data uploading with a Wifi module, which may ...
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3answers
6k views

Converting char array to int

I'm trying to use nRF24L01 module to send a messages between 2 arduinos Transmiter code: const char text[] = "Hello World"; radio.write(&text, sizeof(text)); delay(1000); Reciver code: ...
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4answers
666 views

Reduce 5v Trinket Pro to 3.3v?

Apparently these nRF24L01+ modules need 3.3v, but I've only got 5v Trinket Pros that I'm using. How can I reduce the voltage to the RF transmitter? Would a voltage regulator work? Specifically ...
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1answer
325 views

nRF24L01+ module fried?

I have 2 nRF24L01+ modules that were working fine then...stopped. I'm wondering if I accidentally fried one of the modules. When I run the RF24 library GettingStarted example, this is the output of ...
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0answers
132 views

trying to discover other nrf24 modules

Today I started messing with the idea of getting an arduino uno to autoconnect with another arduino uno using the nrf24l01 breakouts. I dont have a particular goal in mind per se but was just wanting ...
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2answers
125 views

Difference between Arduino IDE giving me headaches

For some time now I've been playing around with the latest version of Arduino IDE and my UNO and ATTiny with simple 433 RF links with the Manchester Library. It all worked fine, but for my next ...
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1answer
3k views

Reading a .csv file element wise

I'm fairly new to arduino programming and C/C++. I would like to read a .csv file element wise, and send each element via. a nRF24L01 tranceiver to a raspberry pi. Right now I'm able to read the .csv ...
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0answers
226 views

Attiny cores with SPI support?

It's been done, but the the tutorials I find seems incomplete. What I'm trying to do is make the ATTiny84 talk to the 2.4 GHz NRF24L01+ radio. I understand that in order to do that I need the MCU to ...
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0answers
460 views

How do I use the NRF24L01? [closed]

I am a high school student and I need to build a remote controlled car for a school project and I have to use arduino. I am fairly new to arduino, but I understand the basics. Also I'm kind of ...
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1answer
209 views

NRF24L0 wireless modules

I have two arduinos (one uno and another nano) with NRF24L0 modules attached to both and they are communicating between each other. All good. However, I have a load of different ones and have ...
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2answers
1k views

Air data rate nRF24L01

I'm using two nRF24L01 to communicate with each other. I did the right setup and they worked fine, however I wanted to change the air data rate to a lower value, for more stability, as the datasheet ...