Analog pH Sensör Kiti (Cam Elektrotlu Su Asitlik Probu)

const int phPin = A0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  // 10 örnek alarak gürültüyü filtrele
  long sum = 0;
  for (int i = 0; i < 10; i++) {
    sum += analogRead(phPin);
    delay(10);
  }
  float avgRaw = sum / 10.0;
  float voltage = avgRaw * (5.0 / 1023.0);

  // Standart pH formülü: pH 7 = 2.5V, eğim = -5.70 pH/V
  float pHValue = 7.0 + ((2.5 - voltage) * 3.5);

  Serial.print("Voltaj: "); Serial.print(voltage, 3);
  Serial.print(" V -> pH: ");
  Serial.println(pHValue, 2);

  delay(1000);
}