Arduino Boards

🔧 How to Simulate Arduino in Proteus

Which is better Arduino or ESP32?

It depends on the project: ESP32 is better for IoT (integrated Wi-Fi, more power, lower cost). Arduino Uno is ideal for beginners (easier, better documentation, community). Arduino Mega for projects with many sensors (54 I/O pins).

How to connect a temperature sensor to Arduino?

For DS18B20: VDD pin → 5V, DQ → Digital pin 2, GND → GND. For DHT22: VCC → 3.3V/5V, DATA → Pin 2, GND → GND. Use 4.7kΩ pull-up resistor between DATA and VCC.

Difference between Arduino Uno and Arduino Mega?

Arduino Mega has more memory (256KB vs 32KB Flash), more pins (54 vs 14 digital), more UARTs (4 vs 1), but same ATmega processor (2560 vs 328P). Mega is better for complex projects.

PIR sensor Arduino code?

int pirPin = 7;
int ledPin = 13;

void setup() {
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  if (digitalRead(pirPin) == HIGH) {
    digitalWrite(ledPin, HIGH);
    Serial.println("Movimiento detectado!");
  } else {
    digitalWrite(ledPin, LOW);
  }
  delay(100);
}