How to work most commonly used IR Infrared sensors with Arduino
Hello, welcome back. In this tutorial, we will learn how the two most commonly used IR Infrared sensors work with Arduino. Also, you can easily understand how these sensors work, as they are explained step by step separately. These sensors can use to detect black, white, and obstacles. Therefore, these are can be used mainly to build line-following robots, obstacle-avoiding robots, and edge detection robots. Keep reading.
Okay, let’s learn how these sensors work step by step. The required components are as follows.
- Arduino Nano board x 1 — Amazon / Our Store
- Sensor type1 — Amazon / Our Store
- Sensor type2 — Amazon / Our Store
- LED x 2 — Amazon / Our Store
- 180ohm resistor x 2 — Amazon / Our Store
- Buzzer x 1 — Amazon / Our Store
- Breadboard x 1 — Amazon / Our Store
- Jumper wires — Amazon / Our Store
Disclosure: These Amazon links are Affiliate links. As an Amazon Associate, I earn from qualifying purchases.
Firstly, identify these components.
The first sensor type
Identifying black and white
Step 1
Firstly, connect these components as follows.
Step 2
Secondly, let’s creates the program for this project. It is as follows.
- The complete program of this project – download
/*IR sensor tutorial
* https://srituhobby.com
*/
#define LED1 2
#define LED2 3
#define Sensor 5
void setup() {
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(Sensor, INPUT);
}
void loop() {
bool value = digitalRead(Sensor);
if (value == 1) {
digitalWrite(LED1, HIGH);
digitalWrite(LED2, LOW);
} else if (value == 0) {
digitalWrite(LED2, HIGH);
digitalWrite(LED1, LOW);
}
}Code explanation
First, the LED, buzzer and sensor PINs are defined.
#define LED1 2
#define LED2 3
#define Sensor 5In the setup function, these PINs are set as Input and Output PINs.
void setup() {
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(Sensor, INPUT);
}In the loop function,
void loop() {
//Gets the sensor values and puts them into the variable
bool value = digitalRead(Sensor);
//These values are checked using IF function. If the value is 1, the LED1 is turns ON.
if (value == 1) {
digitalWrite(LED1, HIGH);
digitalWrite(LED2, LOW);
//If the value is 0, the LED2 is turns OFF.
} else if (value == 0) {
digitalWrite(LED2, HIGH);
digitalWrite(LED1, LOW);
}
}Step 3
Lastly, select board and port. After, upload this code to the Arduino board. Then test this sensor using a black and white surface.
The second sensor type
Identifying black, white and obstacles
Step 1
Firstly, connect this sensor as follows.
Step 2
Secondly, let’s creates the program for this project. It is as follows.
- The complete program of this project – download
/*IR sensor tutorial
* https://srituhobby.com
*/
#define LED1 2
#define LED2 3
#define Buzzer 4
#define SensorD 5
#define SensorA A0
void setup() {
Serial.begin(9600);
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(Buzzer, OUTPUT);
pinMode(SensorD, INPUT);
}
void loop() {
bool value = digitalRead(SensorD);
if (value == 1) {
digitalWrite(LED1, HIGH);
digitalWrite(LED2, LOW);
} else if (value == 0) {
digitalWrite(LED2, HIGH);
digitalWrite(LED1, LOW);
}
int value1 = analogRead(SensorA);
if (value1 <= 50) {
digitalWrite(Buzzer, HIGH);
} else {
digitalWrite(Buzzer, LOW);
}
}Code explanation
Firstly, the LED, buzzer, and sensor pins are defined.
#define LED1 2
#define LED2 3
#define Buzzer 4
#define SensorD 5
#define SensorA A0In the setup function, these pins are set as input and output pins.
void setup() {
Serial.begin(9600);
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(Buzzer, OUTPUT);
pinMode(SensorD, INPUT);
}The loop function includes black, white, and obstacle detection codes. These are described below.
void loop() {
//Black and white detection code
//Gets the digital values through this sensor
bool value = digitalRead(SensorD);
//These values are checked using the IF condition. If the value is 1, the LED1 is turns ON.
if (value == 1) {
digitalWrite(LED1, HIGH);
digitalWrite(LED2, LOW);
//If the value is 0, the LED2 is turns OFF.
} else if (value == 0) {
digitalWrite(LED2, HIGH);
digitalWrite(LED1, LOW);
}
//Obstacle detection code
//Gets the analog values through this sensor
int value1 = analogRead(SensorA);
//These values are checked using the IF condition. If the value is less than or equal to 50, the buzzer is turns ON.
if (value1 <= 50) {
digitalWrite(Buzzer, HIGH);
//Otherwise, the buzzer is turns OFF.
} else {
digitalWrite(Buzzer, LOW);
}
}Step 3
Lastly, select board and port. After, upload this code to the Arduino board.
OK, enjoy this project. The full video guide is given below. So, we will meet in the next tutorial.
How to work most commonly used IR Infrared sensors with Arduino
