// Define the pin numbers for easier reference
const int buttonPin = 7;    // Button connected to digital pin D7
const int outputPin8 = 8;   // Digital pin D8
const int outputPin9 = 9;   // Digital pin D9
const int analogPin = A0;   // Analog input pin A0

void setup() {
  // Configure the digital pins
  Serial.begin(9600);
  pinMode(buttonPin, INPUT_PULLUP); // Set D7 as input with internal pull-up resistor
  pinMode(outputPin8, INPUT);       // Set D8 as input
  pinMode(outputPin9, OUTPUT);      // Set D9 as output

  // Initialize D9 to LOW
  digitalWrite(outputPin9, LOW);
}

void loop() {
  // Continuously monitor the voltage on A0
  float voltage = analogRead(analogPin) * (5.0 / 1023.0); // Convert analog reading to voltage

  // Check if the button is pressed (buttonPin will read LOW when pressed due to pull-up resistor)
  if (digitalRead(buttonPin) == LOW) {
    // Monitor A0 until the voltage drops below 1V
    while (voltage >= 1.0) {
      voltage = analogRead(analogPin) * (5.0 / 1023.0); // Continuously update voltage reading
      Serial.println(voltage);
      delay(200);
    }
    // When voltage drops below 1V, set D8 to LOW
    digitalWrite(outputPin8, LOW);
  }

  // If A0 voltage drops below 0.1V, set D9 to HIGH
  if (voltage < 0.1) {
    digitalWrite(outputPin9, HIGH);
  }

  // Delay for 1000 milliseconds (1 second)
  delay(2000);
  digitalWrite(outputPin9, LOW);

}