IR Led Emitter and Receiver Kit 3MM

IR Led Emitter and Receiver Kit 3MM

Pack consisting of an Emitter LED and an IR Receiver LED.

Specifications:

Emitter LED:
• IR emitter LED;
• Diameter: Ø3mm;
• Wavelength: 940nm;
• Number of pins: 2;
• Lens type: Transparent;
• Viewing angle: 15-30º;
• Maximum current: 20mA;
• Working voltage: 1.2V – 1.5V;
• Operating temperature: -25ºC to 80ºC.

LED Receiver:
• IR receiver phototransistor;
• Diameter: Ø3mm;
• Optimal wavelength: 940nm;
• Number of pins: 2;
• Lens type: Black;
• Viewing angle: 15-30º;
• Maximum current: 20mA;
• Working voltage: 1.4V – 1.5V;
• Operating temperature: -25ºC to 80ºC.

Includes:
• 1x Infrared Emitter LED;
• 1x LED Infrared Receiver.

Application example:

Code for arduino:

#include <WProgram.h>" para "#include <Arduino.h>

Código para o Emissor

/*
irSend sketch
this code needs an IR LED connected to pin 3
and 5 switches connected to pins 4 - 8
*/
#include <IRremote.h>
// IR remote control library
const int numberOfKeys = 1;
const int firstKey = 4;
// the first pin of the 5 sequential pins connected to buttons
boolean buttonState[numberOfKeys];
boolean lastButtonState[numberOfKeys];
long irKeyCodes[numberOfKeys] = {
0x18E758A7, //0 key

};
IRsend irsend;
void setup()
{
for (int i = 0; i < numberOfKeys; i++){
buttonState[i]=true;
lastButtonState[i]=true;
int physicalPin=i + firstKey;
pinMode(physicalPin, INPUT);
digitalWrite(physicalPin, HIGH); // turn on pull-ups
}
Serial.begin(9600);
}
void loop() {
for (int keyNumber=0; keyNumber<numberOfKeys; keyNumber++)
{
int physicalPinToRead=keyNumber+4;
buttonState[keyNumber] = digitalRead(physicalPinToRead);
if (buttonState[keyNumber] != lastButtonState[keyNumber])
{
if (buttonState[keyNumber] == LOW)
{
irsend.sendSony(irKeyCodes[keyNumber], 32);
Serial.println("Sending");
}
lastButtonState[keyNumber] = buttonState[keyNumber];
}
}
}

Código para o Recetor:

/*
IR_remote_detector sketch
An IR remote receiver is connected to pin 2.
The LED on pin 13 toggles each time a button on the remote is pressed.
*/
#include <IRremote.h> //adds the library code to the sketch
const int irReceiverPin = 2; //pin the receiver is connected to
const int ledPin = 13; 
IRrecv irrecv(irReceiverPin); //create an IRrecv object
decode_results decodedSignal; //stores results from IR detector

void setup()
{
pinMode(ledPin, OUTPUT);
irrecv.enableIRIn();
}
boolean lightState = false;
unsigned long last = millis();

// Start the receiver object
//keep track of whether the LED is on
//remember when we last received an IR
void loop()
{
if (irrecv.decode(&decodedSignal) == true) //this is true if a message has been received
{
if (millis() - last > 250) {
//has it been 1/4 sec since last message
lightState = !lightState;
//toggle the LED
digitalWrite(ledPin, lightState);
}
last = millis();
irrecv.resume();
// watch out for another message
}
}