Questions tagged [rf]
Radio Frequency. Typically used to refer to the radio portion of the electromagnetic spectrum which is used for wireless communication. Strictly speaking though, RF can refer to any oscillation (electrical or otherwise) at the associated frequency.
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Arduino NANO RF reciever and Digispark Attiny 85 transmitter issues
I am trying to send RF signal from Digispark Attiny 85 (this one) and receive the signal with Arduino NANO V3.0 ATmega328 (this one). Transmitter and receiver are STX882 and SRX882 (these). Library ...
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Rc switch library display received values only one times using serial monitor
I use Rc switch library to transmit and receive data. It works fine.
The part that sends the data is as follows :
#include <Arduino.h>
#include <RCSwitch.h>
RCSwitch transmitter = ...
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Antenna for ESP32-pico-d4
I am currently playing a bit around with the esp32-pico-4d, it does not have an onboard antenna, so an external antenna is needed, tho I don't know a lot about it so a little help would be appreciated....
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How to communicate pt2262 and pt2272 modul
There is a library called Virtual wire. I used it, but without success. I couldn't quite understand its pins. Can you explain? How can I use it?First picture receiver(pc2272) second picture tranmitter(...
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Choosing a good RF library for transmissions
I am trying to send information from an Attiny85 to an ESP32, through RF.
I am using the most popular 433mhz transmitter on the market.
I know various existing libraries to send and receive data ...
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Decoding 2.4G RF remote controller?
There is tons of information on how IR remote controls work and how to use an Arduino to decode those signals and use any IR remote to suit your project. But I couldn't find much info about 2.4G RF ...
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nRF24L01+ packet loss caused by Arduino reading and communicating with sensors
I have 2 Arduinos communicating with each other. My problem is that one sends packets every 1.5-2 seconds but the other Arduino does sensor reading and data uploading with a Wifi module, which may ...
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1MHZ Attiny85 RF with MANCHESTER library
I'm trying to set up a transmitter made by the following components :
Attiny85 (I need 1MHZ speed)
Cheap 433mhz transmitter (FS1000A)
The library I am using is the Manchester library GitHub.
The ...
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Unable to use RF M4 Receiver with servo motor
I am trying to control a servo motor with the following code:
#include <Servo.h>
Servo servo;
int const inputPin = 3;
void setup() {
Serial.begin(9600);
servo.attach(9);
pinMode(...
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How to make a pairing and mode button on a remote control receiver
I'm working on a remote control project and have come across many different RF receiver/transmitter modules. Many have a pairing/mode button on the receiver that serves to pair the receiver and ...
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READ 433mhz DEVICES
I have an issue with 433mhz reading. I have two cheap transmitter and receiver boards, the most known ones :
I followed several tutorials, and I'm using the rc switch library.
I'm trying to read the ...
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The RF 433MHz receiver code is working only when I reset the Arduino
I'm working on RF modules using Arduino but I observed the if statement is only running once and I need to reset the receiver every time to make it work with real-time changes in the transmitter.
I ...
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I am trying to control a continuous servo (MG996R) with an RF remote but it's not working
I am trying to control a continuous servo (MG996R) with an RF remote, but it's not working; the servo just spins in one direction.
I am new to Arduino so I don't really know if the code is correct.
...
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How to control continuous rotation servo via HC-12 rf module
I am working on a project to wirelessly control a continuous rotation servo...something like a wireless vending machine.
The problem I am having is controlling how many revolutions the servo is ...
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Noise in RF 434 transmitter and receiver
I'm working on RF transmitter and receiver modules using two Arduino UNOs. I'm getting an additional noise on the receiver side in serial.println.
To be more clear about the question. Hre is my ...
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How can I get an Arduino Uno run the Feather9x_RX example?
How do I get this example to run on using an Arduino Uno. I've updated RFM95_RST, RFM95_CS & RFM95_INT to the relevant pins (2,4 & 3 respectively).
This is the output on the Serial Monitor ...
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Can't get 433 RF to work
I am trying to have two Arduino's to communicate to each other via 433Mhz units. My project is a bit more complex, but I since it was notworking I reduced it to most basic form in order to exclude the ...
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RF Keyfob single button code
I'm making a project where a 2 channel RF keyfob (433Mhz) controls an led using arduino nano. As for the hardware everything works and I have tested it with the example decoder code and it works fine. ...
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RFM69 Sending Failure
Hi I'm trying to get the RFM69 rf module to work on an arduino uno.
Here is my code:
#include <SPI.h>
// Addresses for this node. CHANGE THESE FOR EACH NODE!
#define NETWORKID 0 // Must be ...
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Can I just use one Arduino in a receiver/transmitter circuit?
I am trying to build a system to control lights remotely, but I am a student and am operating on a tight budget. Is there any way I can have just one Arduino along with a receiver and transmitter (I ...
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Select pin to connect RF receiver
I use the RCSwitch library receive signals with a RF receiver. I really need to change the pin the receiver is connected to on my Arduino Uno.
What should I change in my sketch?
What pins can I ...
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Decode rf remote signals with ESP32 or node MCU?
I'm trying to decide my rf remote signals using ESP32 or node MCU. I have tried with Arduino and was successful but for some reason it is not working on either ESP32 or node MCU even using the same ...
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Node MCU not functioning correctly
i have a node mcu and i uploaded one example code to test it for rf signal decoding it worked. so after that i have written a code based on that and when i uploaded the code my node MCU suddenly isn't ...
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How would one send radio signals from Arduino at a non-standard frequency
TL;DR: How would one send a fixed radio signal at 447,54MHz with Arduino?
Background: I recently purchased a (receive only) SDR and recorded my garage door fob. I found it sends a fixed signal at the ...
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Directly synthesising an OOK modulated LF signal using a CSV file
I'm looking to transmit some data (CSV files) from a measurement instrument underground to a receiver on the surface. I've learned that in order to penetrate the limestone, low frequencies have to be ...
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RF sniffer with Arduino
Hello programmers out in the world.
I am doing a capstone project for an RF sniffer to capture RF signals from Key fobs within an OEM manufacturing plant. I want to be able to decode this RF signal to ...
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Shift between the carrier frequency of the signal transmitted with arduino and my garage door RC (433 mhz)
I have this 433 mhz transmitter and receiver for arduino.
I want to replay my garage door remote control with this transmitter so I reversed the RC (remote control) signal with RTL-SDR/sdrsharp and ...
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How to Fix mouse cursor lag on voice & movement based head mouse in wireless setting?
For my head mouse project which is based on the voice recognition module V3.1 for left click, double click, right-click operations, I am facing a problem. I am using 433Mhz Radio Frequency one-way ...
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ATTINY85 - RF Transmitter (RH ASK)
I am working on a small RF sensor powered by a battery.
I used the code from Mr K. (https://arduino.stackexchange.com/a/55516/65870) as base and adapted it to the RH Ask protocol:
#define F_CPU ...
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Arduino UNO/Nano communication with SP1ML-868 module
Good evening, I'm trying to establish serial communication between an Arduino UNO/Nano (ATMega328P) and a SP1ML-868 RF radio module (http://www.st.com/en/wireless-connectivity/sp1ml.html). I can talk ...
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RadioHead library change the state when a new message is received
I would like to control a toy car from the server. I use RadioHead library for communication and it works fine.
The application running on the server side is as follows.
#include <...
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Looking for information and/or how to connect the RF433Mhz module (WL101-341/WL102-341)
I'm trying to find information about this 433MHz RF module: QIACHIP
Apparently it can be connected to an Arduino with the RadioHead library, but I don't have diagrams of how to connect them togheter ...
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How can I interface, received HC-12 data and transmit the received data using sx-1278 RF-module in arduino-UNO?
I am currently working on a project, where I need to send data from first unit to the second unit which is a few km apart, so I decided to go with hc-12 RF module as it covers upto 5km. Then the data ...
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esp-01 with rf receiver keeps crashing
SOLVED:
after may hours of testing i have solved the problem.
it turned out to not be a software issue. the power supply i was using did not have a flyback diode and thus caused large voltage spikes ...
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legality of streaming data on 868 or 915 Mhz in EU/US
From what I read about duty cycles in the EU there is a 10% limitation (even less in some sub bands).
The modules I found have a max. rate of 300 kbps. Even if you max out the duty cycle that would ...
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Arduino respond to input from HT12D data output
Is there a way to connect a data output pin from an HT12D to an Arduino or ESP8266-12e input pin, then sense when the data pin is activated so I can have the Arduino or ESP8266-12e do something like ...
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RFID-RC522 not working properly?
So I'm working with an arduino uno and I want to read the UID from one card and write it to another with the code of Miguel Balboa but the RC522 doesn't appear to read anything on the serial monitor. ...
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Most Efficient & Cost Effective Home Automation Setup
I managed to build a system using Wemos D1 R1 connected to my website to retrieve data to power on or off a 5V relay. Now I would like to expand the project to control all my house outlet. Assuming I ...
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What NRF24L01 module is this?
I received my NRF24L01 Module today but I'm having a hard time finding any resources about this particular combination of modules!
https://i.stack.imgur.com/Tiwyj.jpg
I tried searching up the v200 ...
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Battery depleting on second prototype
I am working on a project which uses two 18650 3400ma batteries to power some sensors, an Arduino Mini Pro, an 433mhz RF transmitter and an ESP8266-01. Most of the time the Arduino is in sleep mode ...
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RF433MhZ - PWM with a motor driver freezes the code
LE: I'm almost certain that the problem is noise from the DC motor. I tried with a spare motor laying around and it had no problem, even if it had no capacitor on it's leads. So I tried adding all ...
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RF remote control using VirtualWire on ATtiny85 running at 8MHz on internal oscillator
I'm trying to make an RF remote control using ATtiny85 running at 8MHz on internal oscillator, this cheap RF 434MHz transmitter module (like the one below), and VirtualWire lib, but had no success so ...
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Can I check if a message has been sent successfully using Radiohead_ASK?
I'm new to Arduino programming and I'm trying to get a simple 433 MHz transmitter and receiver module working on an Arduino Uno board. Unsurprisingly, it's not working as expected and I'm trying to ...
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Setting up 433 MHz Transmitter and Receiver in the same Arduino sketch using Radiohead
I have set up a 433 MHz transmitter and receiver pair on one Arduino Uno board. Using the RCSwitch library, I could successfully send and receive signals. Using the Radiohead library however, I could ...
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Start VL53l0X measurement failed
The initialization of the ToF fails with this code. I'm trying to frankenstein it with Radiohead RFM69, so far no luck.
// rf69_reliable_datagram_client.pde
// -*- mode: C++ -*-
// Example sketch ...
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SD Card and Lora module arduino uno
Background: When working on the 2 modules separately they were working perfectly.
Problem: In the code attached we tried integrating them but Lora wouldn't receive any data unless we commented out ...
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SIM800C, CPIN: NOT READY (ERROR CODE : +CME ERROR: 10)
I'm using a SIM800C module, and usually it works fine, but lately it has started giving the error "+CPIN: NOT READY" with ERROR CODE : +CME ERROR: 10(SIM NOT INSERTED). As soon as I get this message, ...
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Arduino encrypted Radio communication
Is there any way or library to communicate two Arduino devices with encrypted connection using modules NRF24L01 or "433Mhz RF" ? Similar encryption like CCMP in Wi-Fi network.
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How to use get_properties to get RSSI in RF24?
As picture below, how to use get_properties ? I fail to understand AN625, how to use get_properties to get RSSI ?
Adding source code based on RH_RF24 functions.
#include <SPI.h>
#include <...
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Wemos D1 Mini using RF with RCSwitch
I’ve bought a RF transmitter and receiver on eBay and I’m trying to get my garage door codes with my Wemos D1 Mini.
I’ve downloaded the RCSwitch library, hooked up the receiver to ground, 5v and ...
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