315Mhz RF Link Kit

By NilsB
@ January 11, 2012

• Component category: Wireless, Remote Control, RC Interface, Radio Frequency & Wireless > Data Transmission

Simple kit for wireless data transmission via 315mhz band.

Frequency: 315Mhz.

Modulation: ASK

Receiver Data Output: High - 1/2 Vcc, Low - 0.7v

Transmitter Input Voltage: 3-12V (Higher Voltage = Higher Transmissionpower)

Preassembled. No soldering.

Kit Content:

1x Receiver board

1x Transmitter board

Vendor:

http://shop.boxtec.ch/product_info.php/cPath/59_60/products_id/40260

Arduino Library:

VirtualWire: http://www.open.com.au/mikem/arduino/

Transmitter-Code:

// transmitter.pde
//
// Simple example of how to use VirtualWire to transmit messages
// Implements a simplex (one-way) transmitter with an TX-C1 module
//
// See VirtualWire.h for detailed API docs
// Author: Mike McCauley
// Copyright (C) 2008 Mike McCauley
// $Id: transmitter.pde,v 1.3 2009/03/30 00:07:24 mikem Exp $

#include 
#undef int
#undef abs
#undef double
#undef float
#undef round
void setup()
{
    Serial.begin(9600);	  // Debugging only
    Serial.println("setup");

    // Initialise the IO and ISR
    vw_set_ptt_inverted(true); // Required for DR3100
    vw_setup(2000);	 // Bits per sec
}

void loop()
{
    const char *msg = "LMR;
    digitalWrite(13, true); // Flash a light to show transmitting
    delay(150);
    vw_send((uint8_t *)msg, strlen(msg));
    vw_wait_tx(); // Wait until the whole message is gone
    digitalWrite(13, false);
    delay(1000);
}

Receiver Code:

// receiver.pde
//
// Simple example of how to use VirtualWire to receive messages
// Implements a simplex (one-way) receiver with an Rx-B1 module
//
// See VirtualWire.h for detailed API docs
// Author: Mike McCauley
// Copyright (C) 2008 Mike McCauley
// $Id: receiver.pde,v 1.3 2009/03/30 00:07:24 mikem Exp $

#include 
#undef int
#undef abs
#undef double
#undef float
#undef round
void setup()
{
    Serial.begin(9600);	// Debugging only
    Serial.println("setup");

    // Initialise the IO and ISR
    vw_set_ptt_inverted(true); // Required for DR3100
    vw_setup(2000);	 // Bits per sec

    vw_rx_start();       // Start the receiver PLL running
}

void loop()
{
    uint8_t buf[VW_MAX_MESSAGE_LEN];
    uint8_t buflen = VW_MAX_MESSAGE_LEN;

    if (vw_get_message(buf, &buflen)) // Non-blocking
    {
	int i;

        digitalWrite(13, true); // Flash a light to show received good message
	// Message with a good checksum received, dump it.
	Serial.print("Got: ");
	
	for (i = 0; i < buflen; i++)
	{
	    Serial.print((char)buf[i]);
	    Serial.print(" ");
	}
	Serial.println("");
        digitalWrite(13, false);
    }
}