[201801-N-C10] 이노션 - 공기질 측정기

innocean.ino

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
}

void loop() {
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("INNOCEAN");
  lcd.setCursor(0, 1);
  lcd.print("DUST : ");
   
  float value = 0;
  float dustDensity = 0;

  pinMode(2, OUTPUT);

  digitalWrite(2, LOW);
  delayMicroseconds(280);

  value = analogRead(0);

  delayMicroseconds(40);
  digitalWrite(2, HIGH);
  delayMicroseconds(9680);

  dustDensity = 0.17 * value * (5.0 / 1024.0);
  dustDensity = dustDensity * 1000;

  lcd.print(dustDensity);
  delay(1000);
}