README.md

🔔 Arduino Buzzer Control Using Button (Series Connection)

This is a basic Arduino beginner project where a buzzer sounds only when the button is pressed.
No button logic is written in the code — the button is connected in series with the buzzer, so control is handled by hardware.

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🧩 Project Overview

• 🧠 Concept: Hardware-based control (Series connection)
• 🔊 Output Device: Buzzer
• 🔘 Input Device: Push Button
• 💻 Platform: Arduino (Uno / Nano / Mega)

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🔌 Components Required

Component	Quantity
Arduino Board	1
Buzzer	1
Push Button	1
Jumper Wires	As required

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🔗 Simulation Link

👉 Open Simulation

🔌 Circuit Diagram

👉

🔌 Circuit Connection

🔁 Connection Sequence

GND → Buzzer (-) → Buzzer (+) → Button → Arduino Pin 2

📌 Details

• Buzzer negative terminal → GND
• Buzzer positive terminal → Button
• Button other terminal → Arduino Digital Pin 2

⚠️ The buzzer turns ON only when the button is pressed, completing the circuit.

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🧾 Arduino Code

#define buzzer 2  

void setup() {
  pinMode(buzzer, OUTPUT);
}

void loop() {
  digitalWrite(buzzer, HIGH);
}

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⚙️ Working Principle

• Arduino pin D2 is always set to HIGH

• Button is connected in series with the buzzer

• 🔘 Button pressed → circuit completes → 🔊 buzzer ON

• 🔘 Button released → circuit breaks → 🔇 buzzer OFF

• ❌ No digitalRead() or software button logic used

📸 Output Behavior

Button State	Buzzer Status
Pressed	🔊 ON
Released	🔇 OFF

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🎯 Learning Outcomes

• Understanding series circuit connection

• Difference between hardware control vs software control

• Basic use of Arduino digital OUTPUT

• Real-world switch operation

👨‍💻 Author

Bishnupriya