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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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5
votes
5answers
7k views

nRF24L01+ RF24 library - can send but can't receive

I'm prototyping out a board with temperature, humidity, windspeed sensors, and using an NRF2401+ board to send values to a Raspberry Pi base station that will record the data. Using a Leonardo clone ...
-1
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1answer
692 views

Serial Monitor breaks normal behaviour of Nano + NRF24l01

Couldn't find any other post that mentions Serial Monitor crippling the normal workflow of the NRF24l01, so here it goes. I have two Arduino Nano, both with NRF24l01 attached, and an RF24 library ...
1
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2answers
395 views

Portable power for an UNO with a nrf24l01+ attached?

Okay so I have an UNO that has an nrf24l01+ attached. I want it to be completely wireless so free of the 5v USB power and the 12V wall plug. In this case what can I use? I do not wish to plug the ...
0
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3answers
2k views

nrf24l01+ does not work with a battery, or very unreliably

For a project in progress, I have an Arduino UNO sending a message when a condition occurs, and a Raspberry Pi that listens to it. Both are fitted with NRF24L01+ modules with antennas. It works ...
0
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3answers
1k views

Pair of nRF24L01s ping/pong example sketch works, but using my own code fails after first successful transmit

I have a pair of nRF24L01s connected to a pair of Arduino Unos and I'm using the RF24 library from here: RF24 library. When I run the pingpair example sketch, the radios transmit and receive back and ...
1
vote
0answers
594 views

Mirf not sending reply

I am trying to create a server - node connection with NRF24L01+ chip and Mirf library with interrupts. It seem to work, but server does not seem to get reply from node. If I put it in the loop it ...
5
votes
2answers
8k views

Sending large structs via nrf24l01 leads to cliping of some structs members

I started with building of the wireless temp/hygro/other values probes. I use 2 arduinos, both with nf24l01+ wireless transceivers, library used is rf24.h (https://github.com/maniacbug/RF24). ...
7
votes
1answer
9k views

Increasing payload size above 32 bytes using nRF24L01+

I tried to modify the example in the following page, by replacing the given string with a 56 bytes one after making all the suitable changes to read(), write() and max_payload_size(increased to 64 ...
0
votes
4answers
3k views

Arduino RF24 library Delay after write function causes no byte availability

It's about the RF24 library you can find here. http://maniacbug.github.io/RF24/index.html I transmit data from one Arduino to another using NRF24L01 radios. When I use the write-function on the ...
0
votes
1answer
618 views

Throughput and BER test with nRF24L01+ radio and Teensy microcontroller

I am trying to modify the example given in the this page to a basic throughput and BER test with two nRF24L01+ and Teensy 3.0 modules. I want to modify the nrf24l01_send_string example in a way that ...
1
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3answers
6k views

Delay on multiple NRF24L01+ (RF24.h) and Arduino nodes

I have set up a system using 4 arduino clones, each wired to an NRF24L01+ radio. I am using the RF24 library by maniacbug (https://github.com/maniacbug/RF24) and have set-up the nodes with 1 base node ...
1
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2answers
12k views

NRF24L01+ scanning and connecting to wifi hotspots or creating one

I've seen this video so I think I can connect it through my wifi router to any device. How can I scan for and discover wifi hotspots and then connect to it? Or is there a way to create wifi hotspot of ...
1
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3answers
683 views

NRF24L01 Direct Communication Library Logics

Actually I'm using the RF24 Library mantained by TMRh20 (https://github.com/TMRh20/RF24). I'm trying to get some type of direct communication between multiple modules working, but I don't want to use ...
1
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1answer
758 views

Arduino NRF24L01+ arduino to netmf transmit issue

I want to communicate between Arduino Mini Pro (china import) and a stm32f4 running netmf runtime. At the moment I'm able to communicate between SPI1 and SPI2 on the stm32 board. After that I ...
0
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2answers
4k views

RF Remote Clone using NRF905

I have come across the various blogs which talks about cloning RF remote using cheap 434 MHz Tx/Rx and RCSwitch library. I tried using RF 434 MHz ASK (https://www.sparkfun.com/products/10532) module ...
1
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1answer
4k views

Can the nRF24L01+ CE and CSN pins be attached to Arduino pins A0 and A1?

This documentation states that the CE and CSN pins can be specified. Can I specify A0 and A1 as these pins?
1
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0answers
2k views

Setting EN_AA (auto ACK) to 0x01 or 0x02 makes nRF24L01+ stop sending/receiving

Test case: 2 arduino nodes with nRF24L01+ transceivers. Using maniacbug's RF24 library. Using pipes 0 and 1. (Auto-ACK is ON for all pipes by default) When I set Auto-ACK ON for all pipes rf24....
2
votes
2answers
1k views

Motor shield and wireless transceiver compete for same pins

I would like to use these 2 components with an Arduino Uno: Arduino Motor Shield R3 nRF24L01 2.4GHz Wireless Transceiver I use Stepper for the motor shield, and SPI + RF24 for the wireless ...
0
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3answers
3k views

“Hello World” program for nRF24L01+?

Where is a simple program that demonstrates unidirectional data transmission over a pair of nRF24L01+ radios? It should have adequate output so that a beginner can determine that the transmission is ...
9
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3answers
23k views

nRF24L01 pipe question

I am looking through the example code found here. I know there are 6 pipes that the nRF24L01 module can use but I've been searching the internet for the address designations and have been able to find ...