수위센서 (A1)
피에조 (13)
만약 수위센서의 일정값이하로 떨어지면 멜로디가 프린터되게 하고 싶은데 어떡하나요??
 
 
#define A0Pin 0

#include <LiquidCrystal.h>
LiquidCrystal lcd(12,11,2,3,4,5);
int sensorVal = 0;
int pump = 9;

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);

  pinMode(pump, OUTPUT);
  for (int i = 2; i < 9; i++) {
    pinMode(i, OUTPUT);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  int FNEVal = 0;
  sensorVal = analogRead(A0Pin);
  Serial.print("Asensor=");
  Serial.println(sensorVal);
  FNEVal = map(sensorVal, 0, 1023, 9, 0);
  lcd.print(FNEVal);
  Serial.print("FND Val=");
  Serial.println(FNEVal);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Dry---------Wet");
  lcd.setCursor(7, 0);
  lcd.print(FNEVal, 1);
  lcd.setCursor(2, 1);

  if (FNEVal <= 3) {
    Serial.println("Very Dry!!");
    Serial.print("Punping for 0.5 Second!!");
    lcd.print("Very Dry!!");
    lcd.setCursor(0,1);
    lcd.print("Punping for 0.5 Second!!");
    digitalWrite(pump, HIGH);
    delay(500);
    digitalWrite(pump, LOW);

  }
  else {
    Serial.println("Very Wet!!");
    digitalWrite(pump, LOW);
  }
  
  delay(3000);  
}