#define ledRed 4  
#define ledGreen 3 
#define relay 5 
bool buttonState ;
int signal ; 
void setup() {
pinMode(ledRed , OUTPUT) ; 
pinMode(ledGreen , OUTPUT); 
pinMode(relay , OUTPUT);
pinMode( 6 , INPUT);
Serial.begin(9600); 
}
void loop() {
buttonState = digitalRead(6) ; 
signal = 1023 - analogRead(A0);

if(buttonState == 1 && signal < 755){
  digitalWrite(relay , HIGH);
  digitalWrite(ledGreen , HIGH);
  digitalWrite(ledRed , LOW);
}
else if(buttonState == 1 && signal >=755){
  digitalWrite(relay , LOW);
  digitalWrite(ledGreen , LOW);
  digitalWrite(ledRed , HIGH); 
}
else{
  digitalWrite(relay , LOW);
  digitalWrite(ledGreen , LOW);
  digitalWrite(ledRed , LOW); 
}
Serial.println(signal);
delay(30) ; 


}