const int PINkelembabanTanah = 34;  // Pin sensor kelembaban tanah terhubung ke pin 34
const int PINpH = 35;  // Pin sensor kelembaban tanah terhubung ke pin 35
const int pinLEDmerah = 4;
const int pinLEDbiru = 2;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Sistem Monitoring Kualitas Tanah");
  pinMode(pinLEDmerah , OUTPUT);
  pinMode(pinLEDbiru, OUTPUT);

}

void loop() {
  int kelembabanTanah = analogRead(PINkelembabanTanah);  // Baca nilai sensor kelembaban tanah
  kelembabanTanah = (kelembabanTanah/4095.00) * 100.00; //nilai 0-100%
  int pH = analogRead(PINpH); // Baca nilai sensor pH tanah
  pH = (pH / 4095.0) * 14.0;  // Mengubah nilai analog menjadi range pH 0-14
  
  Serial.print("Nilai Kelembaban Tanah= ");
  Serial.print(kelembabanTanah);
  Serial.print("%");
  Serial.print(", pH: ");
  Serial.print(pH);
  Serial.print("\t");
  Serial.println(" ");

if (kelembabanTanah <= 50 ) {
  digitalWrite(pinLEDmerah,1);//jika nilai kelembapan tanah <= 50 
  digitalWrite(pinLEDbiru,0);//maka lampu merah menyala
}
else {
  digitalWrite(pinLEDmerah,0); //jika nilai kelembapan tanah >= 50
  digitalWrite(pinLEDbiru,1);  //maka lampu biru menyala
}
delay(1000);
}