#define ledred 4
#define ledgreen 3
#define relay 5
bool state;
bool stateButton;
int signal;
void setup() {
  pinMode(ledred, OUTPUT);
  pinMode(ledgreen, OUTPUT);
  pinMode(relay, OUTPUT);
  pinMode(7, INPUT);
  Serial.begin(9600);
}
void loop() {
  stateButton = digitalRead(7);
  signal=1023-analogRead(A0);
  Serial.println(signal);
  delay(30);
  if (stateButton == 1 && signal< 755 ) {
    digitalWrite(ledgreen, HIGH);
    digitalWrite(relay, HIGH);
    digitalWrite(ledred, LOW);
  } 
  else if (stateButton == 1 && signal >= 755 ) {
    digitalWrite(ledgreen, LOW);
    digitalWrite(relay, LOW);
    digitalWrite(ledred, HIGH);
  } else {
    digitalWrite(ledgreen, LOW);
    digitalWrite(relay, LOW);
    digitalWrite(ledred, LOW);
  }
}