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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What module can I use for receiving 433.42 MHz transmissions with ASK/OOK modulation?
I am looking for a module that would be able to receive communication in the 433.42 (ch01) range with ASK/OOK modulation. Can someone recommend anything that would work and not be an expensive general ...
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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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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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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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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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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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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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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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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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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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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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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 <...
user53266
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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 = ...
user53266
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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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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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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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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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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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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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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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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.
user62180
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Radio receiver: deep sleep when no byte arrives, and wake up when a byte arrives?
This code works to listen for bytes via radio (with a 433 Mhz receiver module) with the Manchester library and Manchester code, and do an action when certain bytes are received:
#include "Manchester....
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Can I use an RF Receiver to any pin on an Arduino?
I have a project that uses a nodemcu and it includes an rf receiver, I created the pcb board already etc etc... so I've already chosen D7 (GPI013) before reading on connecting the rf receiver and ...
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Is it possible to transmit radio signal with cheap 433Mhz transmitter as strings and receive it with an RTL-SDR
I have these Arduino transmitters and receivers.
They are very common. I am just trying to transmit a "Hello" Message using this code.
#include <RH_ASK.h>
#ifdef RH_HAVE_HARDWARE_SPI
#include &...
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