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.
271
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3
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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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2
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0
answers
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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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0
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1
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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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0
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3
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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 ...
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1
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Nrf24L01 with Arduino [closed]
When I wanted to test my Nrf24L01 I wanted to be sure of it working fine, so I used this code for an Arduino Uno:
#include <SPI.h>
#include <RF24.h>
#include "printf.h"
#define RF_CS 9
#...
- 17
0
votes
1
answer
496
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RF24L01+ VER01 with 10 pins
How can I connect this little ship to my Arduino? I can find alot of tutorials how to do it so, but all I find is 8 pins, mine includes 10 pins, and from what I could of understand from searching me ...
- 17
0
votes
4
answers
649
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Using ESP8266 core for Arduino
I am working on a wireless sensor network project, in which data is collected at a central node using nRF24 modules and the RFNetwork.h library.
I want to post that to the internet using the famous ...
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1
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1
answer
1k
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nrf24l01 (8pin) + adapter board (10pin) oops?
I just got my first arduino boards and have been learning the basics (so I know very little). I got the 2.4GHz NRF24L01+ (this one: NRF24L01+) and along with it a breakout board (this one: NRF24L01+ ...
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3
votes
1
answer
284
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rf24 change order of data
I'm using two Arduinos with the rf24 modules.
I want to control a process with those, but for now I'm just checking the connection.
This is the code of the master:
#include <SPI.h>
#include "...
2
votes
2
answers
736
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Why is the nRF24L01 not working with Arduino Esplora?
I am working on a remote control car from an Arduino Esplora board and the Mega 2650 Board. My problem lies with the Esplora board as the nRF does not transmit like it is supposed to or does not even ...
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1
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1
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What are ideal delay times between commands for RF24 lib
Am working on a WiFi based irrigation system that utilises the RF24 lib for comms.
Have got prototype of remote sensor up and running which has a standby current of 0.036mA and transmits data every ...
2
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1
answer
1k
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nrf24l01+ with antenna problem
I just got 4 nrf24l01+ modules with the external antennas, but I'm not able to make them work.
I'm using arduino nanos and MySensors to create a gateway and a sensor.
The funny thing is that when ...
1
vote
1
answer
572
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RF24 + High speed pwd
I'm using the arduino to generate a 100kHz pwd using timer 1
void setup() {
// put your setup code here, to run once:
// Timer 1 Fast PWM mode *toggling* OC1A at 50kHz with *two* OCR1A counts
...
1
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2
answers
2k
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Arduino Mega with nRF24L01+ module
I am having trouble getting this module to work using the tmrh20 lib. I am using these modules with two arduino mega and a 3.3V external power supply. I also placed 10 uF in parallel with the modules ...
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1
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1
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How to remote control Arduino using an old 2.4Ghz toy remote controller?
I have been wondering how to remote control my arduino robot using an old 2.4ghz car toy transmitter which has 4 buttons, up down left and right.
I have the nRF24L01(+) 2.4GHz transceiver to use it ...
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0
votes
1
answer
1k
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How to set string in the structure part of NRF24?
Can anyone help me on how to correct my program ? I want to transmit value in string form.
I put this to TX code
struct payload_t
{
String sensor1;
};
..................
At the loop part I put ...
- 23
2
votes
1
answer
1k
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Dereferencing char into a struct
I am sending some data over an NRF24 link, using the RF24Network library. So far I have only sent numbers, now I also want to send a string, so I have set up my payload struct as
struct payload_t { ...
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3
votes
2
answers
2k
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SPI with a level converter in the other end of connection
I have an Arduino MEGA hooked up with a NRF24L01, and working nicely, talking with another Arduino Uno. It works as described, power supply to 3.3V, and SPI lines (MISO,MOSI,CLK) connected directly to ...
- 31
1
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1
answer
739
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Pin Mapping of nRF2401L01+ using Adafruit's nRF24L01+ library
I have an Arduino Uno and one of these nRF24L01+ from china (see image)
To use the module i wanted to use the library provided by Adafruit (http://playground.arduino.cc/InterfacingWithHardware/...
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0
votes
1
answer
408
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Arduino Yun & nRF24L01+ -> Linino crashing
I'm trying to hook up a nRF24L01+ wireless transmitter to an Arduino Yun Mini on SPI, but I'm having a hard time. After a few minutes Linino crashes and becomes completetly inaccessible - until I ...
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1
vote
2
answers
950
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RF24 Stalls Arduino Program with powerDown
I have an ATtiny85 and an Arduino Uno both using NRF24L01 chips to communicate with one another. The ATtiny85 is powered by a CR2032 coin cell. I am using tmrh20's fork of the RF24 library which can ...
- 309
1
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1
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3k
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connection between Arduino Uno with nRF24L01 and notebook with wireless card
My project intend to command an Arduino UNO by my notebook without cable. I thought to use a RF Nordic nRF24L01 cabled on an Arduino UNO, and to use the wireless card of my notebook to send command to ...
- 113
1
vote
1
answer
955
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NRF24L01 Connection Not Working
I have an ATTiny85 connected to an NRF24L01+ module using this wiring diagram: diagram. The ATTiny85 periodically goes in and out of sleep to send some value to a receiver, an Arduino Uno. If the ...
- 309
2
votes
1
answer
428
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Module and library for self healing large sensor network
I have to build a wireless sensor network with arduinos on my project. It does not need to be a mesh network, but it needs to have self healing capabilities.
I would like to use something cheaper ...
2
votes
1
answer
2k
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RF24 tranceivers: trouble with two way communication
I am using RF24 modules with my two Arduinos Leonardo with the RF24 library. My goal is to be able to press a button on the first Arduino which will light up an LED on the second Arduino, and be able ...
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-1
votes
1
answer
881
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Reading SPI between an MCU and NRF24L01
I have a remote control that has an STM32 MCU and sends data via NRF24L01. What I would like to do is clone the data sent when buttons are pressed by reading what is being sent to the RF24 and then ...
- 103
1
vote
2
answers
882
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nRF24L01 Problem
I'm trying to code a simple transmitter - Receiver program with nRF24L01
Very simple code. Compiles. But when I try to test it using serial monitor. But only the first character is printed on the ...
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3
votes
2
answers
12k
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Using ATtiny85, NRF24L01+, DHT2: can't get data from DHT22
I am trying to make a sensor that gets temperature and humidity values from a DHT22 and send it through NRF24L01+ to a Raspberry Pi 2 Model B.
To connect NRF24L01+ to ATtiny85 and to free two pins ...
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2
votes
1
answer
295
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Run code via NRF24L01+ command "dynamically"?
I'm trying to make a home automation setup but I'm having a bit of trouble.
I want to be able to send commands of varying sizes to my arduino, separated by "|" and after receiving it completely it ...
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2
votes
1
answer
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How to choose SPI type used by RF24 library from application?
I am developing a device with Ethernet shield (with Wiznet W5100) and NRF24L01+. I need to use Soft SPI due to a bug in the Wiznet chip. Next I am developing a different device with NRF24L01+ only. I ...
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1
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871
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NRF24L01+ how much supply ripple is acceptable?
I'm trying to get a simple TX/RX pair to work. I've got identical Nanos and I'm using the example from:
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
I followed the advice about adding a ...
- 49
0
votes
3
answers
202
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Arduino wire can't send char
Hi I have problem with school project. I have 3 Arduino - 1 Transmiter with NRF; 2,3 - NRF receiver and wire slave receiver.
I can't send data via "Wire" library (in code char "datar") to receiver ...
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1
answer
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NRF24 Mixing with/without antenna
Is it possible to have the NRF24 module on an Arduino Mini transmitting to an NRF24 with SMA antenna on a Mega? In that case, would the antenna on the Mega help pickup the signal of the transmitting ...
- 185
0
votes
1
answer
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Remote Wireless Tripwire
I've had an idea for an Arduino project, but I'm not sure where to start. My idea is this: have an Arduino Nano connected to an HC-SR04 ultrasonic sensor, as well as an nRF24L01+ radio. This will be ...
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2
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2
answers
797
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Need help understanding how RF communication works with 2 arduinos
I have two arduinos (uno) and I would like to send the results of a key press on a 5X4 matrix pad to the other arduino. The matrix keypad works great. I can identify which key was pressed with a ...
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2
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NRF24L01+ PA not working with Arduino Mega (works with Nano)
Full disclosure: I'm a newbie.
I've got an Arduino Nano and a Mega, and a pair of NRF24L01+ PA modules (exactly these: http://www.elektrotedarik.com/Images/Urun/11122013173429.jpeg)
I'm trying to ...
2
votes
1
answer
3k
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nRF24L01 module using Mirf library was working and then stopped
I have two nRF24L01 modules, they are both attached to a sensor shield that has special ports for this type of module, on Arduino Unos.
I have this code on the Arduino that is sending the signal:
#...
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0
votes
1
answer
185
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nRF2401 communication (extended vs normal)
Communicating to the antenna-less version from an extended range nRF2401 seems to produce some strange results...
At a distance, the receiver seems to receive a number of values instead of one. For ...
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vote
2
answers
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Using nrf24l01 with mpu 6050 unstable
I am trying to connect the wireless module nrf24l01 with the gyro mpu-6050. Each works perfectly on its own. However, when connecting both to a single atmega328 (in order to send over wireless the ...
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4
answers
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Choosing wireless tech for lowest possible lag
I am drafting a pub quiz project, where the Referee gives a signal and multiple players push their buttons. The first to push wins the right to give an answer.
I want all buttons (referee's + X ...
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0
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1
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Arduino can't see any library I have installed for nrf905?
nrf905\
nRF905-All-In-One-Shield\
RadioHead-master\
RadioHead\
None any of them are compiled with their examples without getting errors.
Error message:
nRF905_RX.ino:4:20: fatal error: NRF905.h: ...
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2
answers
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w5100 and nrf24l01 - SoftSPI - Radio not starting
I had posted some questions about this project earlier this week. Arduino uno + w5100 ethernet shield + nrf24l01 transeiver.
The w5100 is running a webserver to accept GET requests and parse out the ...
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2
votes
0
answers
2k
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Arduino stops working after some receivings from RF
I made a sketch that receives an rgb code from a remote Arduino using nrf24l01 and while it works for the first receivings then it stops working. I placed a testing Serial.println in the loop to test ...
- 354
0
votes
1
answer
133
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Arduino resets when I call network.begin()
I have included the RF24Network library in my project. I tried to use the Simple Transmit/Receive example from here but when it calls the network.begin() my arduino restarts. I placed some Serial....
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0
votes
1
answer
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What is the type parameter on the NRF24NetworkHeader member
Link of the member
What is the character parameter in the above member of the class NRF24Network
I cannot understand the use of it.
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0
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2
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bi-directional nrf24 communication
The central arduino
The 1st node
The 2nd node
I want the central to send to the first node the rgb code like a string on the loop
"rgb: 255000255"
but when it detects something to PIR to send a ...
- 354
0
votes
1
answer
542
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Pressing button stops listening on nrf24l01
I have been tinkering for 2 days to manage send and receive between 2 arduinos. My code is bellow:
Arduino 1:
#include <SPI.h>
#include <RF24.h>
#include "printf.h"
#define LED 2
#define ...
- 354
1
vote
1
answer
2k
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Cannot receive and transmit at the same time
I have 2 arduinos I made some code and I managed to send from the first to the second and from the second to the first with two different pairs of code. What I want to do is to send from the first to ...
- 354
2
votes
1
answer
4k
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Multiple nodes with the same receiving and transmitting address
I want to make a network with arduinos and nrf24l01 chips. The network will be like this:
1 master arduino
multiple (no specific number) slave nodes
I want all nodes to have the same receiving and ...
- 354
3
votes
2
answers
15k
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Not able to make my NrF24L01 work
I have been trying to make my two Nrf24L01 wireless model work for few days now, to do so I follow the tutorial in the following link.
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
I ...
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