Question

What is the function for reading humidity from DHT sensor from Arduino?
dht.readHumidity()
dht.readTemperature()
dht.begin()
dht(pin,DHT22)

Answer 1

include <LiquidCrystal.h> // includes the LiquidCrystal Library

#include <dht.h>

#define dataPin 8

LiquidCrystal lcd(1, 2, 4, 5, 6, 7); // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7)

dht DHT;

void setup() {

lcd.begin(16,2); // Initializes the interface to the LCD screen, and specifies the dimensions (width and height) of the display

}

void loop() {

int readData = DHT.read22(dataPin);

float t = DHT.temperature;

float h = DHT.humidity;

lcd.setCursor(0,0); // Sets the location at which subsequent text written to the LCD will be displayed

lcd.print("Temp.: "); // Prints string "Temp." on the LCD

lcd.print(t); // Prints the temperature value from the sensor

lcd.print(" C");

lcd.setCursor(0,1);

lcd.print("Humi.: ");

lcd.print(h);

lcd.print(" %");

delay(2000);

}