Introduction to Arduino
Let’s start by understanding what Arduino is and what it can do for you as a beginner in electronics.
Installing the Arduino IDE
Before you can start programming Arduino, you need to install the Arduino IDE — the official development environment.
Blink: Your First Arduino Project
Let's build your first real Arduino project — make an LED blink!
Understanding Arduino Code Structure
Learn how Arduino code is structured and how setup() and loop() work together.
Working with Digital Output
Learn how to control components like LEDs, buzzers, and relays using digital pins.
Working with Digital Input
Learn how to use buttons and switches with Arduino and respond to user input.
Working with Analog Input
Learn how to read variable values from sensors using analog pins.
Working with Analog Output (PWM)
Use analogWrite() to control brightness, speed, and more with Pulse Width Modulation.
Final Assessment & Certificate
Take this final quiz to test your knowledge. Score 71% or more to earn your certificate!
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About Lesson
Unlike digital input (which is just ON or OFF), analog input allows Arduino to read a **range of values** — from 0 to 1023.
This is useful for reading:
– Light levels (photoresistor)
– Temperature (NTC sensors)
– Position (potentiometers)
– Sound (microphones)
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🔹 Example:
If you connect a potentiometer to analog pin A0:
int value = analogRead(A0);
This will read a number between:
– 0 → 0 volts (GND)
– 1023 → 5 volts (VCC)
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🧠 Pin Note:
Analog pins are labeled A0, A1, A2, etc.
You must use analogRead() with them — digitalRead() won’t work.
✅ We’ll try reading a potentiometer in the next lesson!
