Questions tagged [nrf24l01]

An Ultra low power 2.4GHz RF Transceiver IC

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23 views

STM32f103 NRF24L01 Communication Problem

I am trying to apply communication between two stm32f103c8t6 with NRF24L01 modules. And using uart with usb to ttl module to reach putty terminal. I am using KEIL and for generating code CUBEMX. Here ...
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1answer
51 views

Wireless RGB led controller circuit with motion sensing - design feedback

Beginner hobbyist here. I would appreciate some design feedback. Purpose of this circuit: It controls an RGB LED strip (5 Meters, SMD 5050) via an IR remote and also automatically powers on/off the ...
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1answer
54 views

Attiny85 for wireless communication

I'm a very beginner in electronics. I'm trying to make a system which transmits a tank chemical level to a distant system. Remote system is an Arduino. For the tank unit I have 4 float switches. ...
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38 views

nRF24L01+ radio module - IRQ problem

I have a problem with IRQ interrupts. After successful transmission, the nRF24L01+ sets the IRQ pin low (about 19 ms), but sometimes doesn't return to high: After every packet transmission (tx ...
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60 views

Wireless Audio Transmission with NRF24L01

:) I have been planning to do a project on transmitting audio through arduino using NRF24L01 RF Modules at the same time sending data commands. I am really a beginner in terms of audio circuits so I ...
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40 views

issue communicating between pi zero w and Arduino nano with nrf24l01

I am trying to communicate between a pi zero w and an arduino nano with the nrf24l01 module. I have got very far and there are no apparent issues, besides no messages not being sent between them. for ...
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3answers
86 views

Extending the NRF24 range / power

I have a NRF24L01 model with an included screw-on antenna and apparently also an integrated RF amplifier (something like this, image sourced from eBay seller top_electronic1980). I have a lot of ...
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1answer
68 views

Atmega328p connected to an NRF24L01+ not working

I've been working on a project for some time right now, I'm trying to make a modular sensor system with atmega's and nrf24 nodes. I've made a custom pcb but it isn't working. I've tried a lot of ...
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1answer
41 views

nrf24l01+ returning incorrect payload value

I have 10 nrf24l01 modules, 5 from the german web shop, 5 from the local finnish offline store. I'm using them in pair, one module sends exactly one byte to another one module with period of ~100ms. ...
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16 views

Problem setting registers (SPI) [NodeMCU fw, nRF24L01+]

I can read registers somewhat fine, but when I try writing to a register in the nRF24L01+, it either crashes and I have to pull it out of the board, or the register becomes all 0s, and I can't reset ...
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1answer
39 views

How many nrf24l01+ can be transfer data between themself in one pipe

My IOT project has ten or more nrf24l01+ modules which They're going to get orders from one nrf24l01+ module and then get back response to that one nrf24l01+. Can i do it in one pipe?
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1answer
180 views

What is the major difference between a WiFi and RF Module? [closed]

In an interview recently, someone asked me what is the major hardware level difference between a WiFi module (ESP8266) and RF module (nRF24L01+) that I had used in my projects. I mentioned that both ...
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52 views

IoT wireless solenoid circuit

I am a Newbie and I do not have a lot of expirience. The circuit has been put together from pieces I have found on the internet. My goal is to develop a reliable wireless solenoid circuit to water my ...
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2answers
92 views

Magnetic Field Interfering with Radio Waves

i am currently building a device that requires a NRF24L01 module to send radio waves to another NRF24L01 to be picked up and interpreted. This is a using an arduino running a code to transmit data via ...
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1answer
45 views

Making an omni anntena for PA+LNA+Antenna

I have several NRF24L01 RF modules that I would like to use to transmit data from a car to a ground station. When testing the modules, I have found that the data transmission is only successful when ...
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1answer
109 views

AVR NRF24L01+ No Communication, No IRQ Activity

I've been scratching my head for a few days over getting the NRF24L01+ modules to work on AVRs (ATMega328/p). I followed Gizmosnack's tutorial, not changing very much at all from his code. I've also ...
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2answers
71 views

Integrating IC transceivers on a pcb

I have a question about the difference between transceiver modules and transceiver ICs. I want to integrate a 2.4GHz transceiver IC - nRF24L01+ onto a PCB instead of using the NRF 24l01+ module. ...
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2answers
171 views

Cause of background buzz in my walkie talkie example? [closed]

I got a simple RF24Audio walkie talkie example working. I'm using the sketch file provided by the RF24Audio getting started example: https://github.com/nRF24/RF24Audio/blob/master/examples/...
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3answers
327 views

How to decrease nrf24l01 transceiver range?

I've just got my Nrf24l01 but then I found out that the working signal range for the module is 100m and above. Our real intention for the module is to let the nrf24l01(Receiver) out of range for about ...
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24 views

Cannot establish a communication between two nRF24L01+ modules

I’m willing to experiment with nRF24L01+, so I have bought a set of modules from China, and I’m trying to establish a communication between an Arduino Nano and a Raspberry Pi 3. At first, I tried to ...
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0answers
72 views

2.4GHz RF design losing signal

First time poster here, please excuse holes in the plot. I have a simple wireless design made of an MCU (atmega328p) and an NRF24L01 module, powered through a 3.3V regulator, talking to a similar ...
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1answer
79 views

How does Wi-Fi deal with multiple frames received at once?

Right now I'm trying to establish a network of 30+ transceivers with NRF24L01 modules - one of them acting as central. However there are big problems, whenever two or more nodes try to send data to ...
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2answers
330 views

Arduino Nano disconnecting from PC on plugging in 3.3v NRF24L01 into PCB

I've built this PCB which includes two I2C port expanders, an Arduino nano, inputs for buttons and encoders, and headers to plug in an NRF24L01 board. Currently, I just have code running to read two ...
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3answers
97 views

Non-Electrical-Engineer-Here: Can I use a 5v 2A power supply with any 3.3V regulator?

I have a 5V 2A DC power supply I plan to power a custom arduino with. However, I'm also using a NRF24l01+, which requires 3.3V. So, I'm in the market for a 3.3V regulator, but I'm unsure of which one ...
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2answers
77 views

Antenna Design for Omnidirectional transmission

I have been working on a custom drone for quite some time now. One thing I have found an issue with is the remote control antenna orientation in relation to the drone. In some directions I will get ...
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1answer
195 views

Inside of 2.4 GHz Dipole Antenna

I bought the following dipole antenna: Now I want to add some extra simple reflector and directors next to this dipole to construct a Yagi-Uda antenna. For this aim, I need to know where is its ...
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1answer
94 views

Replacing Antennas for Wireless Communication

I have been working with NRF modules for some time now. I have been using the 100m rang version as shown here. They are working great but I want to increase the range, so I have bought the PA + LNA ...
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1answer
464 views

Unable to flush TX FIFO queue of NRF24L01+

I am writing code for an ESP32 to send data using a NRF24L01+ module to another NRF24L01+ module connected to an Arduino Pro Mini. The Arduino can successfully send data to the ESP32. So everything is ...
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0answers
394 views

How to develop for the NRF24LE1? [closed]

I found about the nRF24LE1 chips a while ago and they seem perfect for really small applications that require RF since they are the same as the well-known nRF 24L01 but include an 8051 MCU and memory. ...
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205 views

nRF24L01+ mezzanined over microcontroller

I'm designing a hobby project to fit in a certain form factor using a mini nRF24L01+ module and an ATtiny441 microcontroller. To save space I'd like to mezzanine the nRF module -- i.e. solder it to a ...
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1answer
154 views

Do NRF24L01 modules have to use the same SCK-Frequency to work together?

I have two Atmega 328p Microcontrollers connected to NRF24l01 modules. The first one uses a SCK-Frequency of 2Mhz and the second one a SCK-Frequency of 4Mhz. Sadly the Connection doesn't seem to be ...
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1answer
816 views

NRF24L01+ not communication

I have two different types of the NRF24L01+ modules and I'm having difficulties with one of the models. See pictures below for how I have them wired. I'm able to send/receive messages using Model B ...
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1answer
816 views

How to program MCU to work with NRF24L01 module in Bascom language? [closed]

I want to connect several devices together with this RF module. But it's hard for me to understand the Bascom program. Could you please tell what the main idea is or explain in general for me? Do ...
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1answer
441 views

How to put several nRF24L01 adapters (+module) on a breadboard?

I want to use several nRF radios together with an adapter like this: Also, for the device I'm using these for (two nRF's) also I have other components which I put on a breadboard. However, the nRF ...
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1answer
931 views

Transmit and receive data with nrf24l01

I have little bit problem to transmit and receive data with nrf24l01. I use spi communication to communicate my MCU and nrf24l01. My spi communication is working. But i cannot receive any data from ...
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1answer
360 views

Test Transmit Signal for nRF24L01 transreceiver

I have set up a circuit using my joysticks and nRF24L01 transmitter. While I am waiting for another nRF24L01 to use as a receiver, in the meantime I wanted to check whether the nRF24L01 in the ...
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1answer
562 views

Which nRF24L001+PA+LNA should I get? [closed]

I ordered 5 nRF24L01+ chips for 2.4 GHz RF. I have not done tests with them, but doing tests with my current 433 MHz results in a low speed, few meters maximum range. So I expect with my 2.4 GHz RF's ...
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2answers
759 views

Difference between 2.4Ghz ISM and IEEE 802.11 frequency bands?

It may be a silly question to ask the difference between a frequency band and a standard protocol which is represented by IEEE. But, I've been reading the wikipedia page of the IEEE 802.11 and it says ...
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1answer
159 views

Question about 3/~5 output select pin of a boost IC?

I want to power up Arduino nano and nRF24l01+ 's Vcc from MAX756 step-up DC-DC convertor (datasheet). I'm using a single AA battery (1.5V) There is a 3/5(bar) pin to select whether the output ...
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1answer
755 views

NRF24L01+ Longer wires or add antenna cable?

I am using a network of simple 2.4 ghz Nordic NRF24L01 radios (with the stubby SMA antennas) together with pro mini Arduinos. I have to place one radio and sensor inside a metal tube about 6 to 9 ...
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0answers
220 views

Trouble getting attiny85 to drive nRF24l01+

I'm attempting to make an nRF24l01+ send out a simple identifying code when a button is pressed. I'm trying to keep the solution as small as possible, so I want to use the attiny85 to drive it. Her'...
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1answer
236 views

porting code from P18F45K22 to 18f2550 problem

I'm trying to use the nRF24L01 with a pic18f2550 using microc compiler, I started from an example code provided by Nordic for 18F45K22 (which can be found here example code). I've changed pin ...
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1answer
608 views

Is it fine to use 2.4 GHz nRF24l01 modules in commercial products under FCC rules? [closed]

I want to use nRF24l01 modules commercially. But, at the same time, I am aware of some of the FCC rules. I am just curious if someone knows about the regulation and could help me in this. I found this ...
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1answer
129 views

How to verify if power supply is enough to handle power consumption spike?

I am looking to find out how to analyze what will happen to a power supply if my load suddenly draws more current. On my current example ( but that also happen to me with different components ) For ...
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1answer
148 views

nrf24l01 transceiver on altera board de2-115 [closed]

I'm trying to use the nrf24l01 transceiver on altera board de2-115. I would like to send a signal from the altera board using this spi module to another spi module and use the spi module on the ...
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1answer
147 views

Can closed metal box work as a wave-guide for wireless transmitter?

I am using NRF24L01 and ZigBee modules for wireless communication. I kept the modules in the tapered closed aluminum cylinder for sensor data transmission. The signal was being received when the ...
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1answer
219 views

Why NRF24L01+ modules set RPD bit when detecting a signal above -64 dBm on the channel?

Why the value -64dBm? Is it because anything above this value and the receiver is unable to decode any valid packet on the channel? Does this have anything to do with receiver sensitivity? Can ...
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2answers
325 views

2.4 ghz RF radio and antenna - nrf24 underneath a 7-segment display

I have this tiny nrf24 module that I want to use underneath a 7-segment display. How much will this affect the range and the quality of the radio signal? I have done a lot of research and testing on ...
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2answers
491 views

nRF24L01+ not working by software SPI

I want to send and receive data on the air using a pair of nRF24L01+ modules. I am using PIC16F684 as the micro-controller and working with software SPI. I put data to MOSI line before raising the SCK ...
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3answers
2k views

Powering an Arduino Pro Mini 5V and a 3.3V nRF24L01+ Transceiver from One Small Battery

I'm trying to power an Arduino Pro Mini 328 5V/16MHz with a single battery, preferably a LiFePO4 for safety purposes (it doesn't need to be more than around 300 mAh). However, I'm connecting a ...