#include <Adafruit_Sensor.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd1(8, 9, 4, 5, 6, 7);
#include <DHT.h>
#include <DHT_U.h>
#include "U8glib.h"
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE);
#define DHTPIN 2
#define DHTTYPE DHT22
DHT_Unified dht(DHTPIN, DHTTYPE);
char buf[9];
int T,H;
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd2(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  lcd2.init();
  lcd2.backlight();
  Serial.begin(9600);
  dht.begin();
  u8g.setFont(u8g_font_gdr20r);
  lcd1.begin(16, 2);
  }
void loop() {
  show();
  LCD();
  LCDI2C();
  delay(500);
  sensors_event_t event;
  dht. temperature().getEvent(&event);
  if (isnan(event.temperature)) {
    Serial.println(F("Error reading temperature!"));
}else {
  Serial.print(F("Temperature: "));
  Serial.print(event.temperature);
  Serial.println(F("°C"));
  T = event.temperature;
}
dht.humidity().getEvent(&event);
if (isnan(event.relative_humidity)) {
  Serial.println(F("Error reading humidity!"));
}else {
   Serial.print(F("Humidity:"));
   Serial.print(event.relative_humidity);
   Serial.println(F("%"));
   H = event.relative_humidity;
 }
}
//----------------------------
void show(void){
   u8g.firstPage();
do{
  u8g.setFont(u8g_font_gdr20r);
  u8g.drawStr( 10, 20, "T = ");
  u8g.setFont(u8g_font_gdr20r);
  u8g.drawStr( 80, 20, "H = ");
  sprintf (buf,"%d",T);
u8g.drawStr(10,45,buf);
sprintf (buf,"%d",H);
u8g.drawStr(80,45,buf);
}while( u8g.nextPage() );
}
void LCD(void){
  lcd1.setCursor(0 , 0); 
  lcd1.print("T = ");
  lcd1.setCursor(5 , 0); 
  lcd1.print(T);
  lcd1.setCursor(0 , 1); 
  lcd1.print("H = ");
  lcd1.setCursor(5 , 1); 
  lcd1.print(H);
}
void LCDI2C(void){
  lcd2.setCursor(0, 0);
  lcd2.print("T = ");
  lcd2.setCursor(5, 0);
  lcd2.print(T);
  lcd2.setCursor(0, 1);
  lcd2.print("H = ");
  lcd2.setCursor(5, 1);
  lcd2.print(H);
}