Arduino Tutorial

By LiterallyTheOne

0: Introduction

Why Arduino?

• Great and easy
• Large supportive community
• Hobbyists
• Industry

Basic examples

• Blink LED project
• Traffic Light controller

Smart Plant Watering system

Automatic Night Lamp

Distance Measurement

Robotics

Home Automation

Weather station

IoT

Wearables

What is Arduino?

• Open-source
• Electronic platform
  • Hardware: Uno, Nano, Mega, etc.
  • Software: Arduino IDE
• Best tool to learn electronics

Arduino Uno

• AVR: Atmega328P
• Arduino framework

GPIO

• Digital: 14 (D0-D13)
• Analog: 6 (A0-A5)

Blinking LED

• Hello World
• LED that blinks

Simple LED

• Outputs/Leds/LED
• Sources/Fixed voltage
• Sources/Ground
• Passive/Resistors/Resistor

Connect LED to Arduino Uno

PlatfromIO project

main.cpp

#include <Arduino.h>

// put function declarations here:
int myFunction(int, int);

void setup() {
  // put your setup code here, to run once:
  int result = myFunction(2, 3);
}

void loop() {
  // put your main code here, to run repeatedly:
}

// put function definitions here:
int myFunction(int x, int y) {
  return x + y;
}

Remove unnecessary lines

#include <Arduino.h>

void setup()
{
}

void loop()
{
}

Explaning functions

• setup:
  • Initialization
  • Runs one time
• loop:
  • Logic
  • While True

Pin Mode

• pinMode: Set the mode of a pin
  • INPUT
  • OUTPUT
• In setup

pinMode(13, OUTPUT);

Blinking

• digitalWrite: Write a digital value on a pin
  • High
  • LOW
• In loop

digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);

Full code

#include <Arduino.h>

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

void loop()
{
  digitalWrite(13, HIGH);
  delay(500);
  digitalWrite(13, LOW);
  delay(500);
}

Build

• Tick button
  • Top right
  • Bottom left
• .pio/build/uno/firmware.hex

Upload firmware

• Right click on Arduino Uno
• mega328: load firmware
• select the path
• Start simulation

Output

Link to the tutorial and materials