// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2018-06-17 오후 3:13:19
// by Ok-Hyun Park
//
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x3F,16,2); // 접근주소: 0x3F or 0x27
int dust_sensor=A0;   // 미세먼지 핀 번호
int rgb_R=5;          // rgb 핀 빨간색 핀
int rgb_G=6;          // rgb핀 녹색 핀
int rgb_B=7;          // rgb핀 파란색 핀
int piezo=3;
float dust_value=0;    // 센서에서 입력 받은 미세먼지 값
float dustDensityug=0; // ug/m^3 값을 계산
int sensor_led=12;     // 미세먼지 센서 안에 있는 적외선 led 핀 번호
int sampling=280;      // 적외선 led를 키고,센서 값을 읽어 들여 미세먼지를 측정하는 샘플링 시간
int waiting=40;
float stop_time=9680;  // 센서를 구동하지 않는 시간
//
void setup(){
  Serial.begin(9600);
  pinMode(sensor_led,OUTPUT);                                          // 미세먼지 적외선 led
  pinMode(rgb_R,OUTPUT); pinMode(rgb_G,OUTPUT); pinMode(rgb_B,OUTPUT); // 3색 LED
  pinMode(piezo,OUTPUT);
  lcd.init(); lcd.backlight();
}
//
void loop(){
  digitalWrite(sensor_led,LOW);       delayMicroseconds(sampling ); // LED 켜기
  dust_value=analogRead(dust_sensor); delayMicroseconds(waiting  ); // 센서 값 읽어오기
  digitalWrite(sensor_led,HIGH);      delayMicroseconds(stop_time); // LED 끄기
  dustDensityug=(0.17*(dust_value*(5.0/1024))-0.1)*1000;            // 미세먼지 값 계산
//
  lcd.setCursor(0,0);  lcd.print(dustDensityug); // 1라인
  //
  if(dustDensityug<=30.0){ // 대기 중 미세먼지가 좋음 일 때 파란색 출력
    analogWrite(rgb_R,0); analogWrite(rgb_G,0); analogWrite(rgb_B,255); lcd.print("blue");
  } else if(30.0<dustDensityug&&dustDensityug<=80.0){ // 보통 녹색 
    analogWrite(rgb_R,0); analogWrite(rgb_G,255); analogWrite(rgb_B,0); lcd.print("green");
  } else if(80.0<dustDensityug&&dustDensityug<=150.0){ // 나쁨 노란색 
    analogWrite(rgb_R,255); analogWrite(rgb_G,155); analogWrite(rgb_B,0); lcd.print("yellow");
    digitalWrite(piezo,HIGH); delay(1000); digitalWrite(piezo,LOW); delay(1000);
  } else{ // 매우 나쁨 빨간색
    analogWrite(rgb_R,255); analogWrite(rgb_G,0); analogWrite(rgb_B,0); lcd.print("red");
    digitalWrite(piezo,HIGH); delay(1000); digitalWrite(piezo,LOW); delay(1000);
  }
  delay(2000);
}
//
여기에 온습도 센서를 달아서 lcd화면에 지금 미세먼지 값이 나오는데 그것을 한줄로 나오게 하고 
그밑에 현재 온도나 현재 습도가 lcd화면에 출려되게 하는 소스좀 도와주세요
 
온습도센서는 무엇을 쓸건가요?
DHT-11?
예제는 구글에서 쉽게 찾을 수 있으니 동작시켜본 후에
DHT-11 예제소스도 첨부해보세요
 
https://www.google.co.kr/search?q=%EC%95%84%EB%91%90%EC%9D%B4%EB%85%B8+DHT-11&oq=%EC%95%84%EB%91%90%EC%9D%B4%EB%85%B8+DHT-11&aqs=chrome..69i57j0l5.2119j0j7&sourceid=chrome&ie=UTF-8