ir sensor as a detector alarm

Other Hardware Sensors
1

Just purchased a 2PCS Digital 38KHz Infrared IR Sensor Transmitter Kit for Arduino and would like some help on how I am going to interface it with the arduino and the code . I was able to send a signal but the buzzer would not come on.

Thank :slight_smile:

2

First rule is provide enough information to enable us to know what you have done.

A program and wiring diagram would help.

Weedpharma

3

Transmitter? Presumably there's a receiver too?

4

This is the sensor http://www.ebay.com/itm/2PCS-Digital-38KHz-Infrared-IR-Sensor-Transmitter-Kit-for-Arduino-JT1-/400540617003 I connected the data pins and gave it supply and a signal is send from the photo diode when passing the receiver an led on the receiver go high to tell you it revieved a signal (it is build in)

Now I need some help to with the coding to make a buzzer go high when the receiver receives a signal from the photo diode

5

Well the receiver has a data pin: presumably that goes high when it receives a signal?

So just connect that to an Arduino i/o pin and read it with digitalRead. If it's high, make another pin go high for your buzzer.

(Or if the receiver's logic is inverted, look for a low on its data pin and turn your buzzer on then)

6

I am making this code but still is not working

int LED = 47; // IR Led on this pin
int dtect = 49 ;

void setup(){
pinMode(LED, OUTPUT);
pinMode(dtect, INPUT);
digitalWrite(LED, HIGH);
}

void loop(){

irsensor();
}

void irsensor()
{

if (digitalRead(dtect) == HIGH)
{
digitalWrite(Buzzer,HIGH);
}

7

Well no, it won't compile will it? You have a pin named Buzzer here...

digitalWrite(Buzzer,HIGH);

... but you didn't declare a variable called Buzzer and assign it a pin number..