const int analogPin = A0;  // Analog pin connected to the output of the ORP sensor
const float voltageReference = 5.0;  // Arduino Uno voltage reference

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

void loop() {
  // Read analog value from the ORP sensor
  int rawValue = analogRead(analogPin);
  
  // Convert raw analog value to voltage
  float voltage = (float)rawValue * voltageReference / 1023.0;
  
  // Print voltage value to Serial Monitor
  Serial.print("Voltage: ");
  Serial.println(voltage);
  
  delay(1000);  // Adjust delay as needed
}
/*In this code:

We define analogPin as the analog pin connected to the output of the ORP sensor.
voltageReference is set to 5.0V, which is the reference voltage of the Arduino Uno.
In the setup() function, we initialize serial communication.
In the loop() function, we read the raw analog value from the ORP sensor using analogRead().
We convert the raw analog value to voltage by scaling it based on the reference voltage (5.0V) and the ADC resolution (1023 steps).
We print the voltage value to the Serial Monitor.
Adjust the delay as needed to control the sampling frequency.
Please note that accurately measuring ORP requires proper calibration and may involve additional circuitry or modules to ensure accurate readings. Additionally, the conversion from voltage to ORP value depends on the characteristics of the specific ORP sensor being used and may require calibration against known ORP standards.*/