Programming Course - Arduino

What is Arduino?

Arduino is an open-source platform used for creating electronic projects. It includes both programmable boards and an integrated development environment (IDE).

Getting Started:

To begin, download and install the Arduino IDE from the official website. Then, connect your Arduino board to your computer via USB and select the correct model and port in the IDE.

void setup() {
    // initialization
    pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
    // main loop
    digitalWrite(LED_BUILTIN, HIGH);
    delay(1000);
    digitalWrite(LED_BUILTIN, LOW);
    delay(1000);
}

Temperature Sensors:

Arduino can be connected to various sensors to read environmental data. For example, a temperature sensor can be used to read ambient temperature.

Example:

#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

void setup() {
    Serial.begin(9600);
    dht.begin();
}

void loop() {
    float h = dht.readHumidity();
    float t = dht.readTemperature();
    
    if (isnan(h) || isnan(t)) {
        Serial.println("Failed to read from sensor!");
        return;
    }
    
    Serial.print("Humidity: ");
    Serial.print(h);
    Serial.print(" %\t");
    Serial.print("Temperature: ");
    Serial.print(t);
    Serial.println(" *C ");
    
    delay(2000);
}

Actuators:

Actuators like motors can be controlled by Arduino to perform physical actions. For example, you can use a servo motor to move a robotic arm.

Example:

#include <Servo.h>

Servo myservo;

void setup() {
    myservo.attach(9);
}

void loop() {
    myservo.write(90);
    delay(1000);
    myservo.write(0);
    delay(1000);
}

Introduction:

Serial communication allows Arduino to communicate with other devices like computers or Bluetooth modules. This communication is typically done via the RX and TX pins or via USB.

Serial Communication Example:

Here's an example code to send data from Arduino to a computer via serial communication.

void setup() {
    Serial.begin(9600);
}

void loop() {
    Serial.println("Hello, World!");
    delay(1000);
}