Questions tagged [nrf24l01]

An Ultra low power 2.4GHz RF Transceiver IC

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Power issue with NRF24LO1 and ATtiny44

I am super frustrated with my NRF24LO1 module and ATtiny44. The thing is when it is connected to an Arduino board it works perfectly, but when I try powering up using battery the entire system halts. ...
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Unreliable wireless comunication between 2 arduino boards

I am facing a strange and very frustrating issue while realizing a basic radio comunication between 2 arduino boards, one Arduino Nano and one Arduino Uno. For such a purpose, I am using the NRF24L01 ...
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Need help understanding nRF24L01+

The summary of my issue is that I'm struggling to see how to connect two nRF modules together through PIC microcontrollers, and my main issue lies in understanding how to set up these modules. The ...
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nRF24L01+ Doesn't Receive Packets

I am trying to send data from one MSP430 to another MSP430 using Nordic Semiconductor nRF24L01+ radios, but I am unable to receive transmitted packets. I am able to read from and write to the radio ...
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Strip Antenna Impedance Control

I'm integrating an nRF24L01+ chip into a PCB I'm designing, but I'm a little confused about the best PCB antenna design. I would like to make design a pcb stripline antenna, I have found the correct ...
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problem with receiving structure with nrf24l01 using stm32

I am sending a structure that contains three float values and a uint64_t using stm32f103RE and nrf24l01 and receiving it via an stm32f103C8. the problem that I have is that the uint64_t is received ...
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How long does it take to charge up a capacitor

I am using Esp32 to control a NRF24L01 with antenna To power the solution I am using a HLK-PM03 which provides a 3.3V Output. I was thinking of using 470uF capacitor (other suggestions are appreciated)...
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How to identify a 2.4Ghz RF chip from LED panel remote (Albrillo)

I am attempting to identify two chips used in a remote control that enables the use of LED panels. I am trying to automate the turn on/turn off without using the remote by emitting the same RF message ...
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Can RF-Nano communicates with NRF24L01 mini?

I would like to know if a RF-Nano based on the chip nrf24l01+ can communicate with nrf24l01 mini. I am guessing yes since both are using same IC but i need a pro advise about it. RF-Nano : https://fr....
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Making USB device wireless

I need to convert my USB device to a wireless one. The idea is to create something like USB dongle that connects to the PC and communicates with its counterpart by radio. At the opposite side there ...
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Cant get Communication to Happen Between two nRF24L01 Modules

I've been trying to get communication to work between two nRF24L01 modules, as seen in this image, and I have been having nothing but trouble. I simply want to get simplex communication to happen ...
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Can I directly connect a wifi-antenna to an NRF24L01 chip without SMA-connector?

I have an NRF24L01 wireless communication chip with an onboard, copper trace antenna. I saw a guide on soldering a wire to the end of the copper trace in order to extend the signal/reception. I happen ...
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SPI sensor wireless transmission using nrf24l01+ but without microcontroller

I have a tiny sensor which has SPI signal. The sensor has only two lines (other than power and ground) and it takes clcok signal from a board and sends the SPI signal back to the board. I want to take ...
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Connecting Attiny85 to nRF24IO1: How can I get 2 free IO pins in attiny85

I am trying to connect an Attiny85 to an nRF24L01. I tried the library NRFlite from the Arduino IDE libraries and it works fine. The problem is that I end up with only 1 free analog pin (pin 4) in ...
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Shielding an RF module from noise

I feel like a fool. As seen in the image below, the nRF module is right next to the VIN terminal. When I powered this up, I was able to communicate with the nrf module via SPI but it wouldn't receive ...
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One Channel Relay Board with NRF24 / WiFi connectivity with built in power supply

I have been looking out for a board which has a one channel relay along with some wireless connectivity such as a NRF24 module or a Wemos D1 Mini attached to it aong with a built in power supply. Is ...
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Can I use a Zener diode in place of a 3.3V voltage regulator to power an nRF24L01?

The nRF24L01 operates at a voltage range of 1.9 – 3.6V. I have a power supply of 6V. I need to regulate to 3.3V. I used an LD33V (3.3V regulator), but I need other solution, so I decided to use a 3.3V ...
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How to reduce power in barebone setup of atmega328p?

For every 15 minutes once ultrasonic sensor data will be send to the receiver using nRF24L01. I'm using atmega328P with battery power using AAA*3 battery and it should operate at least 15 days. Can ...
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Strange A3941 motor driver behavior

I'm driving a 12V brushed DC motor using an A3941 full bridge mosfet driver. The setup is controlled using an STM32F407. Since the A3941's logic inputs need 5V, I'm using a MC74VHCT125A buffer between ...
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5X5 button matrix with 433Mhz rf module or NRF module

I have interfaced 433Mhz rf module and custom 5x5 button matrix with arduino. Keeping Keypad matrix at transmitter side and an LED on the reciever side as long as i hold down the button the led should ...
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nRF24 PCB Antenna Choices

I am trying to create RF module using the nRF24L01P. I am trying to maximize the range while still using a trace antenna. My plan is to combine the simple trace antenna design with the long range ...
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PCB Design for an RF application

I am designing a PCB that will have a wireless RF IC on it. It uses the NRF24L01+ (datasheet) and an RF Front End RFX2401C (datasheet). I know that the PCB layout is very important for RF applications,...
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Can't seem to send more than 3 bytes from the NRF24L01+ TX to RX module

So I'm sending multiple payloads of the same width from the transmitter to a receiver and I see it sends only sends 3 times after which TX_FULL bit is set in the ...
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Can't seem to write to the status register of nRFL2401+

So I've been playing around with nRF2401+ radio module lately but been having a few issues. One of them (which could be the cause of the second one) is not being able to properly set the ...
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No longer getting the expected default values from nrfl2401 radio module

So I've been playing around with nrfl2401 and I see I am no longer getting the expected default value when I read the configuration register. The default value is ...
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Understanding the OVERRUN error for a duplex SPI communication with nrf24l01 radio module

So I am using an HAL library for SPI to talk with the radio module. I configured the SPI to be bidirectional or full-duplex so the master receives the data from the MISO line as it sends out on the ...
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ATTINY85 and NRF24L01+ only works with longer vcc/gnd lines on PCB

So I've been banging my head for a couple weeks on this, but I need some help. I'm trying to build something small and battery powered. I have a handful of ATTiny85's and NRF24L01+'s. I have ...
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Can I replace the 433mhz modules on my homemade remote controller with a nrf24 transreciever

I built a simple 4 channel 433mhz transmitter and reciever because I can't afford a remote controller, the range is limited to 3 feet and nrf24 transreciever have longer range, so my question is can I ...
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Streaming video over NRF24L01P

Consider that we have compressed camera output video by JPEG using a Cortex-M4 MCU (Like STM32F407xxx that has a DCMI unit). I want to know, Is it possible to ...
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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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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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105 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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422 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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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