CURRENT CUT DEVICE

This project uses a device that automatically turns off power to save electricity once a device finishes charging. It’s controlled through a phone app, which makes it easy to use. This helps prevent wasting electricity and ensures safety by stopping unnecessary power flow. By managing energy usage effectively, this setup promotes environmentally-friendly habits and reduces electricity costs. It’s a practical solution for households and schools to adopt smart energy practices and contribute to a sustainable environment.

Components Required:

1. Arduino Uno – 1
2. Bluetooth Module (e.g., HC-05 or HC-06) – 1
3. Servo Motor – 1
4. Switch – 1
5. Battery(9V) – 1
6. Battery – 1
7. Jumper Wires-10-15(M-M)
8. Power Supply for Arduino (USB or External)
9. For controlling Smartphone with Bluetooth and Mobile App

Connections:

Arduino Uno:

• Bluetooth Module (HC-05/HC-06):
  • VCC to 5V on Arduino
  • GND to GND on Arduino
  • TX to RX (pin 8) on Arduino
  • RX to TX (pin 7) on Arduino
• Servo Motor:
  • Signal wire (usually yellow or white) to a PWM pin A0 on Arduino
  • VCC and GND to 5V and GND on Arduino respectively
• Switch:
  • One terminal connected to the battery positive
  • The other terminal connected to the relay module’s normally open (NO) contact
• Battery:
  • Connected to the battery for on the breadboard for taking the common of positive and negative power supply

#include <SoftwareSerial.h>
#include <Servo.h>

// Bluetooth module pins
#define RX 7    // Arduino RX to Bluetooth TX
#define TX 8   // Arduino TX to Bluetooth RX

// Servo motor pin
#define SERVO_PIN A0

// Variables
SoftwareSerial bluetooth(RX, TX);
Servo servo;

void setup() {
  Serial.begin(9600);       // Initialize serial communication for debugging
  bluetooth.begin(9600);    // Initialize Bluetooth communication
  servo.attach(SERVO_PIN);  // Attach servo to SERVO_PIN
  
  pinMode(LED_BUILTIN, OUTPUT);  // Built-in LED as output for status
  
  // Initialize servo to default position (off state)
  servo.write(0);
}

void loop() {
  if (bluetooth.available()) {
    char command = bluetooth.read();
    
    if (command == '1') {
      // Start charging process (simulated)
      digitalWrite(LED_BUILTIN, HIGH);  // Turn on built-in LED for indication
      
      // Simulate charging completion after 10 seconds
      delay(10000);
      
      // Charging complete, activate servo to turn off switch
      servo.write(90);  // Adjust servo position based on mechanical setup
      
      // Send confirmation message to mobile app
      bluetooth.print("Charging complete. Switch turned off.");
    }
  }
}