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This is the second instructable of the series of instructables where I show you how to get started with grove sensors and an Adruino. In the previous instructable I showed you how to get started with a Hall Sensor which is a magnetic field sensor (don't forget to check that out). In this instructable I'm going to show you how to get started with a Grove IR Distance Interrupter.

The Grove IR Distance Interrupter is a proximity sensor just like the ultrasonic senor which I showed you a few days back, but instead of a ultrasonic sound this uses IR (infra red) to project a beam and waits for a reflected beam.

So lets get started....

Step 1: Tools and Components

All that you need to get started is

  • Arduino UNO
  • Grove IR Distance Interrupter
  • BreadBoard LED
  • Jumper wires

The Grove IR Distance Interrupter can be brought form Seeed Studio.

Step 2: Circuit

Now its time to hook up the connections, the connections goes as follows -

  • VCC => Arduino +5v
  • Gnd => Arduino
  • Gnd Sig => Arduino D2

Then upload the code below to check the connections.

void setup()  {
Serial.begin(9600);
pinMode(2,INPUT); } void loop() { while(1) { delay(500); if(digitalRead(2)==LOW) { Serial.println("Something in range"); } else { Serial.println("Nothing in range"); } } }

The above code will output "Something in range" when any object is in its range or will output "Nothing in range" when nothing is in its range.

Step 3: Control and LED

In this step I'm going to show you how to control an LED, such that when you bring a object close to the Sensor the LED will glow.

Connect the anode of the led to digital pin 4 and the cathode to Gnd. After connecting the LED upload the code -

void setup()  {
Serial.begin(9600);
pinMode(2,INPUT); pinMode(2,OUTPUT); } void loop() { while(1) { delay(500); if(digitalRead(2)==LOW) { Serial.println("Magnet in range"); digitalWrite(4,HIGH); } else { Serial.println("Magnet out of range"); digitalWrite(4,LOW); } } }

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