Temperature+and+Humidity+Sensor

Importance and Utility Temperature and humidity sensors are essential components in various applications, ranging from weather monitoring systems to home automation. These sensors provide accurate measurements of temperature and humidity levels in the environment, allowing for better control and optimization of various systems. By incorporating these sensors into projects, engineers can create smarter and more efficient solutions.

Project: Weather Monitoring System In this example project, we will create a weather monitoring system using an Arduino board and a temperature and humidity sensor. The objective is to measure the temperature and humidity levels in the environment and display them on an LCD screen.

List of Components:

• Arduino Uno: 1x (https://www.arduino.cc/en/Main/ArduinoBoardUno)
• DHT11 Temperature and Humidity Sensor: 1x (https://www.adafruit.com/product/386)
• LCD Display (16x2): 1x (https://www.sparkfun.com/products/255)
• Breadboard: 1x (https://www.sparkfun.com/products/12615)
• Jumper Wires: Assorted (https://www.sparkfun.com/products/12794)

Examples:

1. Setting up the Arduino and DHT11 Sensor:

   
   #include <dht.h>

define DHTPIN 2

dht DHT;

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

void loop() { int chk = DHT.read11(DHTPIN); Serial.print("Temperature: "); Serial.print(DHT.temperature); Serial.print(" °C\t"); Serial.print("Humidity: "); Serial.print(DHT.humidity); Serial.println(" %"); delay(2000); }

Explanation: This code initializes the DHT11 sensor and reads the temperature and humidity values. It then prints these values to the serial monitor every 2 seconds.

2. Displaying Temperature and Humidity on LCD:

include <dht.h>

include <LiquidCrystal.h>

define DHTPIN 2

dht DHT;

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() { lcd.begin(16, 2); lcd.print("Temperature:"); lcd.setCursor(0, 1); lcd.print("Humidity:"); Serial.begin(9600); }

void loop() { int chk = DHT.read11(DHTPIN); lcd.setCursor(12, 0); lcd.print(DHT.temperature); lcd.setCursor(10, 1); lcd.print(DHT.humidity); delay(2000); }

Explanation: This code adds an LCD display to the previous example. It initializes the LCD and displays the temperature and humidity values obtained from the DHT11 sensor.