Learn ARDUINO-C with Real Code Examples
Updated Nov 27, 2025
Learning Path
Understand digital and analog I/O
Learn basic C syntax
Practice with built-in Arduino functions
Explore common libraries
Build small embedded projects
Skill Improvement Plan
Week 1: Blink LED and Serial Monitor
Week 2: Sensors and actuators
Week 3: PWM and motor control
Week 4: Communication modules (I2C, SPI, UART)
Week 5: IoT and multi-board projects
Interview Questions
Explain the difference between digitalRead() and analogRead().
How do setup() and loop() work?
How would you interface an Arduino with a sensor module?
Explain PWM and how to control a motor speed.
How do you handle multiple interrupts in Arduino C?
Cheat Sheet
pinMode(pin, INPUT/OUTPUT);
digitalWrite(pin, HIGH/LOW);
analogRead(pin); analogWrite(pin, value);
delay(ms) and millis() for timing
Serial.begin(baud); Serial.print() for debugging
Books
Getting Started with Arduino
Arduino Cookbook
Exploring Arduino
Arduino Robotics
Arduino Programming in C
Tutorials
Blink LED tutorial
Arduino sensor interfacing
PWM motor control
Arduino IoT projects
Serial communication debugging
Official Docs
Arduino Reference Guide
Arduino Language Reference
Arduino API Documentation
PlatformIO Arduino Integration Guide
Arduino Playground Examples
Community Links
Arduino Forum
Hackster.io Arduino projects
Stack Overflow Arduino tag
Reddit r/arduino
Adafruit learning system
Community Support
Arduino Forum
Stack Overflow Arduino tag
Arduino subreddit
Hackster.io
Adafruit learning system