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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0answers
2k views

Slower nRF24L01 round trip delay than expected

Short/summary I expected that the round trip delay of a nRF24L01+ would be less than 1 ms. In practice I see around 3 to 5 ms and other sources have similar values. Does anybody know why this round ...
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1answer
890 views

Modified Mesh networking using nrf24l01

I am trying to make a mesh network of three nrf24l01 nodes in which all three are transceivers, such that all three are in a line. The modification I want to make is that if two end nodes are not able ...
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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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2k views

Void value not ignored as it ought to be

im trying to build an rc plane using arduino nano and nrf24l01 as receiver but im having some issues in the code it has error on the line done = radio.read(joystick,sizeof(joystick)); which says ...
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1answer
290 views

Incorrect data being received on RX of NRF24L01P

I am running a setup of two NRF24L01P's on homemade code where the TX sends an analog signal fed through a standard pot, and the RX simply prints out the signal. But the RX seems to be getting ...
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2answers
783 views

Unable to compare char from radio (RF24)

The code below is receiver code using nRF24L01. In the loop section I'm comparing the char that was being sent from the Arduino transmitter. In this case the char array says "I'm off" just like the ...
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1answer
461 views

How can I use the NRF24L01 modules without a library?

The datasheet is too intimidating for me, and I dont want to use the libraries available. Hence, I am looking for some clarity on this matter.
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1answer
2k views

Problem with using multi-node nRF24l01+ with Arduinos

I have 3 nodes in my system. One centralNode and two sensor nodes (right and left). Sensor nodes transmit data to the centralNode and receive from it. centralNode may transmit to both nodes and ...
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2answers
405 views

nrfl2041, WIFI, bluetooth, xbee, zwave, other wireless communications [closed]

Have a project using up to 200 sensors. communication method needs to be wireless. Sensors need to communicate data to the cloud or to a local storage device. Data is transmitted 6 to 24 times per day ...
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1answer
1k views

Use SPI and I2C in the same circuit (ATtiny85/84)

There is a previous question about this same topic here, but it does not answer my question. I want to use a generic I2C OLED 128x64 px display and an SPI RF24 radio in the same sketch. I know that ...
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0answers
894 views

nRF24l01+ Outputting Garbage Values

I just purchased a set of 10 nRF24l01+ modules with a breakout board that looks like this: Note: This is the nRF24l01+ chip, not a clone Si24Ri. Also, I'm using an Arduino Mega. I'm following the ...
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1answer
208 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
887 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
466 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
508 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
84 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
1k 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
899 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
2k views

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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0answers
47 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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0answers
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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245 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
449 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
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
6k 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
2k 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
452 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
374 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
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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1answer
416 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
626 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
326 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
715 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
433 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
553 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
826 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
3k 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 ...
4
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0answers
776 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. ...
2
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1answer
393 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 ...
2
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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
69 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 ...