Children Safety System

Project Overview

To create a system that monitors the distance between a child and the TV using an IR sensor. If the child is too close to the TV, the system will automatically turn off the TV and light up an "OFF" LED. The TV will turn back on and light up an "ON" LED when the child moves to a safe distance.

Components

1. Arduino Uno

2. IR Sensor

3. Relay

4. Jumper Wires

5. Breadboard

Circuit Diagram :

Steps to Build the Project :

Connect the IR Sensor to Arduino:

• VCC → 5V on Arduino Nano

• GND → GND on Arduino Nano

• OUT → Digital Pin D2 on Arduino Nano

Connect the Relay to Arduino:

• VCC to 5V

• GND to GND

• IN to digital pin 8 on the Arduino

Arduino Code :

int irSensor = 2; // IR sensor connected to digital pin D2

int relayPin = 8; // Relay module connected to digital pin D8

int greenLed = 7; // Green LED connected to digital pin D7 (TV ON)

int redLed = 6; // Red LED connected to digital pin D6 (TV OFF)

int sensorValue = 0; // Variable to store IR sensor value

void setup() {

pinMode(irSensor, INPUT);

pinMode(relayPin, OUTPUT);

pinMode(greenLed, OUTPUT);

pinMode(redLed, OUTPUT);

digitalWrite(relayPin, HIGH); // Initially, TV is ON

digitalWrite(greenLed, HIGH); // Green LED ON (TV ON)

digitalWrite(redLed, LOW); // Red LED OFF

Serial.begin(9600); // Initialize serial communication

}

void loop() {

sensorValue = digitalRead(irSensor); // Read IR sensor value

if (sensorValue == HIGH) { // Object detected within unsafe distance

Serial.println("Child too close! Turning off TV...");

digitalWrite(relayPin, LOW); // Turn off the TV

digitalWrite(redLed, HIGH); // Red LED ON (TV OFF)

digitalWrite(greenLed, LOW); // Green LED OFF

} else { // Safe distance

Serial.println("Safe distance. TV is ON.");

digitalWrite(relayPin, HIGH); // Turn on the TV

digitalWrite(greenLed, HIGH); // Green LED ON (TV ON)

digitalWrite(redLed, LOW); // Red LED OFF

}

delay(500); // Small delay to stabilize the sensor reading

}

Code File

Testing the System :

• Connect the IR Sensor, relay module, and LED as per the circuit diagram.

• Upload the code to the Arduino using the Arduino IDE.

***Happy Tinkering***