README.md

🔘💡 Arduino LED with Series Button Control

This Arduino project shows how to control an LED using a push button connected in series with the LED and resistor.

The LED turns ON only when the button is pressed because the circuit path is completed.

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🔗 Simulation Link

👉 Open Simulation

🔌 Circuit Diagram

👉

📌 Arduino Code

#define LED 2

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

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

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⚙️ How It Works

• Pin 2 is set as OUTPUT
• Pin is driven HIGH continuously
• LED and button are connected in series to GND
• When button is pressed → circuit completes → LED glows
• When button is released → circuit breaks → LED OFF

No input reading is required because the button is used as a hardware switch.

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🧰 Components Required

• Arduino board
• LED
• Push button
• 220Ω resistor
• Jumper wires
• Breadboard

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🔌 Circuit Connection

Pin 2 → Resistor → LED → Button → GND

Button acts as a series switch.

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▶️ Upload Steps

1. Open Arduino IDE
2. Select board & port
3. Paste code
4. Upload
5. Press button → LED ON

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🎯 Learning Outcome

• Series circuit control
• Using button as hardware switch
• Basic Arduino digital output

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✅ Simple hardware-controlled LED project.

👨‍💻 Author

Bishnupriya