Morning Wake-up Alarm With Sound And Light Robotic Kit

Function

Project Overview: In this experiment, we build a "Sunlight-Activated Alarm." Instead of setting a fixed time, this alarm relies on environmental sensors. It demonstrates how street lights or automatic brightness systems work in the real world.

Key Features:

  • Automatic Detection: Uses an LDR Sensor to distinguish between Day and Night.

  • Smart Logic: The Arduino constantly reads light levels. If the light value crosses a specific threshold (Morning), it triggers the alarm.

  • Output: A rhythmic Beep (Buzzer) and Blink (LED) pattern indicates morning has arrived
    What You Need for This Project

To build this Automatic Morning Wake-up Alarm With Sound And Light, we used the following parts from the Plzpapa Basic Robotic Kit:

  • Arduino Uno
  • BreadBoard
  • LDR (Light Sensor)
  • Buzzer (For Sound)
  • LED (Koi bhi rang)
  • Resistor Blue (LED ke liye)
  • Jumper Wires 

Wiring (Taarein Jorna)

1. BreadBoard:

  • + Connect with GND
  • - Connect with A0

2. LDR Sensor:

  • LDR Leg 1: Breadboard +.
  • LDR Leg 2: Breadboard -.

3. LED Connections:

  • LED Long Leg (+): Arduino Pin 13
  • LED Short Leg (-): Blue Resistor ki aik side ke sath jorien.
  • Blue Resistor doosri side: Breadboard +

4. Buzzer Wiring

  • Buzzer Long Leg (+): Arduino Pin 10.
    Buzzer Short Leg (-):  Breadboard +

🛒 Buy This Robotic Kit Now

Code

int ldrPin = A0;      // LDR Pin
int buzzerPin = 10;   // Buzzer Pin
int ledPin = 13;      // LED Pin

int lightValue = 0;
// Threshold ko adjust karein.
// Internal Pullup mein: KAM number = ROSHNI, ZYADA number = ANDHERA
int threshold = 300;  

void setup() {
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
 
  // YEH LINE BOHAT ZAROORI HAI (LDR ke liye internal resistor ON karti hai)
  pinMode(ldrPin, INPUT_PULLUP);
 
  Serial.begin(9600);
}

void loop() {
  lightValue = analogRead(ldrPin);
  Serial.print("Sensor Value: ");
  Serial.println(lightValue);

  // Agar Roshni hai (Value 300 se kam hai)
  if (lightValue < threshold) {
    Serial.println("Subah Ho Gayi! Alarm Baj Raha Hai");
   
    // Alarm ON
    digitalWrite(ledPin, HIGH);
    digitalWrite(buzzerPin, HIGH);
    delay(200);
   
    // Alarm OFF (Blink effect)
    digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);
    delay(200);
  }
  else {
    // Andhera hai (Sab band)
    digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);
  }
  delay(100);
}




 


 

        

    
      
        

      
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