RF_Shield_315MHz__SKU_TEL0075_-DFRobot

Introduction

Application

Specification

Set Address Code

The RF Shield has 8 three-state address pins, which can support up to 6561 address code.The three state is High,Low and Floating.The level of the pin is set by the jumper.Above the address pin,there is L.Under the address pin,there is H. So,if you jump the L and the address pin,the level of the address pin is Low.In like manner，if jump to H,the level is High. Remove the jumper,the level is Floating. In actual use, address code depends on the remote control. Only the address codes are equal, it is possible to carry out communication. Our remote wireless keynob 315MHz(SKU:FIT0355) default address code is floating, therefore,you must remove all the jumpers. You can also disassemble the remote control, set the short leg to modify the remote address code.

Use the RF Shield
Chip Model SC2272(RF Shield) Transmitter SC2262 SC2260 PT2260 PT2262
Oscillation Resistance Value 620K(Default Values) Matching Resistor Values 4.7M 12M 1.2M 4.7M

We recommand you to use our remote wireless keynob 315MHz(SKU:FIT0355).It is simple and convenient!

  1. According to the address code of the remote wireless telecontroller, set the address code of this shield by pluging or pulling the jumper.Only when the address code of the telecontroller is equal to the address code of the shield, the command transmit by the telecontroller can be received by this shield. The address code of our remote wireless keynob 315MHz(SKU:FIT0355) is floating, so you must remove all the jumpers.(8 jumpers all)

  2. Turn the switch to PROG,upload the sample code to your Arduino. When done, turn the switch to RUN.

  3. Adjust the position of the antenna, which makes it perpendicular to the board. This can increase the receiving distance.

  4. Open the serial monitor, press the button on the telecontroller. You can see the LED will twinkle once when you press the button. This indicates that this shield has received command from the telecontroller. You can also see which button pressed on the serial monitor. The high level 1 is the pressed button.

Sample Code

    /*The following 4 pin definitions,correspond to 4 buttons on the remote control(The telecontroller is Remote Wireless Keynob 315MHz(SKU:FIT0355))*/
    int D1 = 8;    //The digital output pin 1 of decoder chip(SC2272)
    int D2 = 9;    //The digital output pin 2 of decoder chip(SC2272)
    int D3 = 10;   //The digital output pin 3 of decoder chip(SC2272)
    int D4 = 11;   //The digital output pin 4 of decoder chip(SC2272)
    int ledPin = 13;   //Receiving indicator

    volatile int state = LOW;

    void setup()
    {
      Serial.begin(9600);
      /*The four pins order below correspond to the 4 buttons on the remote control.*/
      pinMode(D4, INPUT);  //Initialized to input pin, in order to read the level of the output pins from the decoding chip
      pinMode(D2, INPUT);
      pinMode(D1, INPUT);
      pinMode(D3, INPUT);
      pinMode(ledPin, OUTPUT);
      attachInterrupt(1,blink,RISING); //Digital pin 3,interrupt 1,corresponds to receiving interrupt pin of the decoding chip
      digitalWrite(ledPin, LOW);
    }

    void loop()
    {
      if(state!=LOW)
         {
           state=LOW;
           delay(1);   //delay some time,wait for stable level on the output pin
           digitalWrite(ledPin, HIGH);
           Serial.print(digitalRead(D4));  //Read individually output pins of the decoder chip,and put them on the serial monitor
           Serial.print(digitalRead(D2));
           Serial.print(digitalRead(D1));
           Serial.println(digitalRead(D3));
           delay(300);
           digitalWrite(ledPin, LOW);
         }
    }

    void blink()
    {
     state =! state;
    }

FAQ

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