How do I connect a temperature sensor to my Arduino?

How do I connect a temperature sensor to my Arduino?

To connect a temperature sensor, like the LM35, you need to connect its VCC to 5V, GND to ground, and the output pin to an analog pin on the Arduino.

What code do I need to read the temperature from the sensor?

You can use the following code:

int sensorPin = A0; // Pin where the sensor is connected
void setup() {
  Serial.begin(9600);
}
void loop() {
  int sensorValue = analogRead(sensorPin);
  float temperature = sensorValue * (5.0 / 1023.0) * 100; // Convert to Celsius
  Serial.println(temperature);
  delay(1000);
}

How can I display the temperature on an LCD?

You can use the LiquidCrystal library. Connect the LCD to the Arduino and modify your code to include:

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 2);
  Serial.begin(9600);
}

void loop() {
  // Read temperature as before
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print(" C");
  delay(1000);
}

What other sensors can I use with Arduino?

You can use various sensors like humidity sensors, motion sensors, light sensors, and gas sensors. Each has its own connection and code requirements.