LDR WITH ARDUINO

🔰 Introduction

Learn how to build the classic LED Blink project using Arduino UNO or ESP32. This project helps beginners understand how digital output works on microcontrollers.

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🔧 Components Needed

Component	Quantity	Notes
Arduino UNO or ESP32	1	Any compatible board
LED	1	Any color
Resistor	1	220Ω recommended
Breadboard	1	Optional but helpful
Jumper Wires	3–4

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📷 Circuit Diagram

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🧩 Schematic Diagram

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🛠️ Wiring Instructions

1. Insert the LED into the breadboard.
2. Connect a resistor to the long leg (anode) of the LED.
3. Connect the other end of the resistor to digital pin 13.
4. Connect the short leg (cathode) of the LED to GND.
5. Plug the Arduino or ESP32 into your PC via USB.

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🧾 Arduino Code

arduino-led-blink.ino

void setup() {
  pinMode(13, OUTPUT);
}

void loop() {
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  delay(1000);
}

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