IR Obstacle Sensor

Note

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Kit purchase

Looking for parts? Check out our all-in-one kits below — packed with components, beginner-friendly guides, and tons of fun.

Name	Includes Arduino board	PURCHASE LINK
Elite Explorer Kit	Arduino Uno R4 WiFi	BUY
3 in 1 Ultimate Starter Kit	Arduino Uno R4 Minima	BUY

Course Introduction

In this lesson, we will learn how to use the IR Obstacle Sensor with Arduino.

Note

If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.

• 1.1 Install Arduino IDE(Important)

• 1.2 Introduce of Arduino IDE

Required Components

In this project, we need the following components:

SN	COMPONENT INTRODUCTION	QUANTITY	PURCHASE LINK
1	Arduino UNO R4 WIFI	1	BUY
2	USB Type-C cable	1
3	Breadboard	1	BUY
4	Wires	Several	BUY
5	IR Obstacle Avoidance Sensor Module	1	BUY

Wiring

Common Connections:

• IR Obstacle Avoidance Sensor Module

  • OUT: Connect to 2 on the Arduino.

  • GND: Connect to GND on the Arduino.

  • VCC: Connect to 5V on the Arduino.

Writing the Code

Note

• You can copy this code into Arduino IDE.

• Don’t forget to select the board(Arduino UNO R4 Minima/WIFI) and the correct port before clicking the Upload button.

// Define the pin used for the infrared sensor
const int sensorPin = 2;

void setup() {
  pinMode(sensorPin, INPUT);  // Set the sensor pin as input
  Serial.begin(9600);         // Initialize serial communication
}

void loop() {
  // Read and print sensor value
  Serial.println(digitalRead(sensorPin));
  delay(50);
}