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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A potentiometer is a variable resistor — turning the knob changes the voltage it sends to the Arduino.
Let’s read the position of the knob using analog pin A0.
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🔧 What You Need:
– 1× Potentiometer
– Jumper wires
– Arduino Uno
– (Optional) Serial Monitor in Arduino IDE
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🔌 Wiring:
– Middle pin of potentiometer → A0
– One side pin → 5V
– Other side pin → GND
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💻 Code Example:
void setup() {
Serial.begin(9600); // Start serial communication
}
void loop() {
int sensorValue = analogRead(A0); // Read analog value (0–1023)
Serial.println(sensorValue); // Print it to Serial Monitor
delay(200); // Wait for a short time
}
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💡 Open the Serial Monitor (🔍 icon in top right of Arduino IDE) to see live readings.
As you turn the knob, the numbers will change from near 0 to 1023.
✅ Congratulations — you’re now working with real analog sensors!
