Questions tagged [nrf24l01]
An Ultra low power 2.4GHz RF Transceiver IC
124 questions
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Authorization for non-commercial use of nRF24L01P in custom PCB (university project)
For a university project (non commercial) I am designing a PCB that uses a nRF24L01P.
I read a number of forum threads (such as FCC certification for nrf24l01+) where the need of an FCC approval is ...
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Load cell value becomes negative when above certain force
I have a 100 gram load cell with the hx711 amplifier board. I have it wired up to an arduino nano with an NRF24L01 module to send the raw value to another arduino nano.
The problem is that when I aply ...
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Do radios need a minimum range to function properly?
I'm going to use some well-known radios (nRF24L01+) to wirelessly read some voltage/current sensor data over little distances on a quad-copter since the drone is quite populated and we don't want to ...
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RF receiver frizzes when start brushless motor
I'm trying to build a quadcopter with and Arduino, and I'm facing a problem, that is the RF receiver of the quadcopter freezes (not the Arduino) when I turn on the brushless motor.
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What is the best way to understand if nRF24L01+ still works properly?
I continuously transmit some data from one nRF24L01+ (nRF) to another one. After a long transmission time, I often experience that the transmitter stops its transmission at a random time for no reason....
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How to use nRF24L01 on ATTiny85 and together with serial TX?
I am using ATTiny85 + nRF24L01 to receive radio messages.
After connecting nRF24L01 to ATTiny85 I don't have much PINs left, as I use all pins except PB5=RST:
...
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Can I use the NRF24L01 in a vacuum?
Can I use the NRF24L01 module in a vacuum chamber?
I want to put sensors in the chamber, connect them to an Arduino with an NRF24L01 module, and transmit data. Will the module work in metal and glass ...
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Review of PCB RF Design
I designed a 4 layer RF board with the NRF24L01+. When I got the boards in to test I was not able to establish a radio link with some other NRF24L01+ modules. I have attached my schematic and board ...
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Problem switching nRF24L01 module with MOSFET
I am trying to switch nRF24L01 module with MOSFET to reduce power consumption as low power mode for nRF24L01 is not working.
My setup includes STM32G030F6P6TR without external crystal. So, when I put ...
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How can I change SPI ports on an Arduino?
My end goal is to read information from an nRF24l01 module connected to my Arduino UNO R3 and generate an interrupt while doing that.
I have read that for hardware interrupts, only pins D2 and D3 can ...
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The receiver sends correct but too much information to the keyboard with STM32 nRF24
I have a problem with keyboard hid. I did remote control with STM32 transceiver nRF24. My problems that receiver true receiving incoming data but too much text. Problems that:
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how to convert a uint32_t array data buffer to an uint8_t array in C?
I'm making a STM32F4 RC transmitter using the NRF24L01, but this device only support a uint8_t buffer array to transmit. I'm using in the ADC (DMA mode) in my STM32 board but the ADC read output is in ...
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Can I transmit audio sampled with I2S driver from ESP32 using Si24R1 (Chinese clone of nRF24L01)?
I'm trying to transmit audio via nRF24 with an ESP32 development board using a driver library from nopnop2002. I'm using the i2s-adc esp-idf lib functions to get data from an analog microphone and I ...
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I want to get a NRF24L01 transceiver to use as a switch to wake up a toy, but is it possible to use it without a separate controller attached?
To give more detail, the toy I'm trying to modify has a reset pin that I would like to tap remotely, as it goes to sleep after a few minutes and hitting that reset pin wakes it up. As such, while I do ...
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Using An nRF24L01 Module With A 2.5GHz 5dBi Antenna?
I have a basic knowledge about Communications and Antennas, so i was wondering what will happen if i used a 2.5GHz 5dBi antenna instead of a 2.5 GHz 3dBi one?![Images Are Listed Below].
To be specific,...
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Is the output power of nRF24L01+ dependant on power supply level?
I'm making a low power sensor node using a nRF24L01+ module in always-TX mode, powered by 2xAAA batteries. Considering the minimum voltage of 2v when batteries are depleted, the device would still ...
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NRF24L01: SPI communication only writes zeros to registers
I am trying to write simple code for transmitting with the NRF24L01 wireless chip, but the SPI communication is not going very well.
Using the code below I can read any register on the NRF24L01, ...
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588
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How can I connect those pins to jumper wires? [closed]
I have an nRF24L01 and I want to connect these pins with jumper wires to my Arduino but the module covers the right side of the pins and I can't connect jumper wires to them. How can I connect those ...
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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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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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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 work with longer Vcc/GND lines on PCB
I'm trying to build something small and battery powered. I have a handful of ATtiny85s and nRF24L01+s.
I have breadboarded it using the 3-pin method described on Instructables and it works (I have a ...
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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. I am using a UART with USB to TTL module to reach a PuTTY terminal. I am using KEIL and CUBEMX for generating code. ...
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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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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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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 ...
