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  1. RF 433MHz Transmitter/Receiver Module With …

    • In this section, we’ll build a simple example that sends a message from an Arduino to another Arduino board using 433 MHz. An Arduino board will be connected to a 433 MHz transmitter and will se… さらに表示

    Description

    Throughout this tutorial we’ll be using the FS1000A transmitter and corresponding receiver, but the instructions provided also work with other 433MHz transmitter/receiver modules that work in a similar fashion. These RF modules are very popular among the Arduino tinkerers and are used on a wide variety of applications that require wireless control....

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    Wrapping Up

    You need to have some realistic expectations when using this module. They work very well when the receiver and transmitter are close to each other. If you separate them too far apart you’ll lose the communication. The communication range will vary. It depends on how much voltage you’re supplying to your transmitter module, RF noise in your environm...

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  1. Wireless communication between Arduino boards can be achieved using 433MHz RF transmitter and receiver modules. These modules are inexpensive and can be interfaced with Arduino for wireless data transfer. The 433MHz frequency is commonly used for short-range communication, with the modules operating on Amplitude Shift Keying (ASK) for signal modulation.

    Code Example for Transmitter

    To set up a wireless transmitter using an Arduino and a 433MHz module, you can use the RadioHead library, which simplifies the process of sending data wirelessly. Here's a basic example of how to send a message from a transmitter Arduino:

    #include <RH_ASK.h>
    #include <SPI.h> // Not actually used but needed to compile

    RH_ASK driver;

    void setup() {
    if (!driver.init())
    Serial.println("init failed");
    }

    void loop() {
    const char *msg = "Hello World";
    driver.send((uint8_t *)msg, strlen(msg));
    driver.waitPacketSent();
    delay(1000);
    }
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