Basic Weather Station Using a D1 Mini Pro

//Basic Weather Station Using D1 Mini pro 10/13/19
//https://KM4NMP.com/
//For the I2C LCD library used and installation instructions use link below
//https://randomnerdtutorials.com/esp32-esp8266-i2c-lcd-arduino-ide/
//For the DHTesp Library use link below
//https://github.com/beegee-tokyo/DHTesp/archive/master.zip


#include "DHTesp.h"
#include <LiquidCrystal_I2C.h>


int lcdColumns = 16;
int lcdRows = 2;
bool state=0;
unsigned long previousMillis = 0;
const long interval = 2000;


LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);

DHTesp dht;

void setup() {

  
  
  dht.setup(14, DHTesp::DHT22);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);  
  lcd.print("KM4NMP Weather");
  
}

void loop() {
  unsigned long currentMillis = millis();

  
  
  if (currentMillis - previousMillis >= interval){ //checks time elapsed since last read 
    float h = dht.getHumidity();                   //get humidity
    float t = dht.getTemperature();                //get temperature
    float f = t*9/5+32;                            //change temp to F
    lcd.setCursor(0, 1);
    lcd.print(f);                                  //prints temp
    lcd.print((char)223);                          //charecter for derees
    lcd.print("F   ");
    lcd.print(h);                                  //prints humidity
    lcd.print((char)37);                           //speacial charecter for%
    previousMillis = currentMillis;                // resets time of last read
  }
    
  
}