Project6.Digital IR Receiver
==================================

Description
------------
IR is widely used in remote control. With this IR receiver, Arduino project is 
able to receive command from any IR remoter controllers if you have the right 
decoder. Well, it will be also easy to make your own IR controller using IR 
transmitter.

Specification
--------------
- Power Supply: 5V
- Interface: Digital
- Modulation Frequency: 38Khz
- Module Interface Socket: JST PH2.0
- Size: 30*20mm
- Weight: 4g
 
Connect
--------
.. image:: /img/connect/6_bb.png

Code
-----
.. code-block:: c

    #include <IRremote.h>
    IRsend irsend;
    void setup()
    {}
    void loop() {
    irsend.sendRC5(0x0, 8); //send 0x0 code (8 bits)
        delay(200);
    irsend.sendRC5(0x1, 8); 
        delay(200); }

.. note:: Upload this code to the transmitter

.. code-block:: c

    #include <IRremote.h>
    const int RECV_PIN = 11;
    const int LED_PIN = 13;
    IRrecv irrecv(RECV_PIN);
    decode_results results;
    void setup()
    {Serial.begin(9600);
    irrecv.enableIRIn(); // Start the receiver
    }
    void loop() 
    {if (irrecv.decode(&results)) 
    { if ( results.bits > 0 )
        {

        int state;
        if ( 0x1 == results.value )	
        {		
            state = HIGH;
        }
        else
        {
            state = LOW;
        }
            digitalWrite( LED_PIN, state );			
        }
    irrecv.resume();        // prepare to receive the next value
    }
    }

.. note:: Upload this code to the receiver

When IR Receiver module receives the infrared signal from IR Transmitter, D1 led
on the IR Receiver module will blink. When IR Receiver module receives the 
infrared signal from IR Transmitter, D1 led on the IR Receiver module will blink.

Phenomenon
-----------
.. image:: /img/phenomenon/6.jpg