Thirai Project - Smart Light

💡 Smart Light using ESP32 + PIR

Project Details

Controller

ESP32

Sensor

PIR Motion Sensor

Output

Relay + Light

Level

Beginner

Overview

This project automatically turns ON a light when motion is detected using a PIR sensor and ESP32. It helps in energy saving and smart automation systems.

Components

• ESP32 Development Board
• PIR Sensor
• Relay Module
• Bulb / Load
• Jumper Wires

Connections

PIR Sensor

Connected to GPIO 14

Relay Module

Connected to GPIO 26

ESP32 Code

ESP32 Arduino Code

#define PIR 14
#define RELAY 26

void setup(){
    pinMode(PIR, INPUT);
    pinMode(RELAY, OUTPUT);
}

void loop(){
    int motion = digitalRead(PIR);
    digitalWrite(RELAY, motion);
}

Output

When motion is detected, the light turns ON automatically. When no motion is detected, the light turns OFF.

Flasher