tcs project

#include <Servo.h>
int value = 0;
int avg_value = 0;
int sensorPin = A5;  //connect ir receiver output to this pin
int buttonPin = 18;  // button pin to A4
boolean buttonState = HIGH; 
boolean sanitiserState = LOW;
int ledPin = 13; //this is for testing purpose
int sanitisertank = 0;
Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
  digitalWrite(buttonPin, HIGH);
  //servo motor is connected to Arduino digital pin 3
  myservo.attach(3);
}

void loop() {
  buttonState = digitalRead(buttonPin);
  delay(50);
  if(buttonState==LOW && tapState==LOW){
    digitalWrite(ledPin, HIGH);
    myservo.write(0);
    delay(7000);
    sanitisertankState = HIGH;
    sanitisertank = 1;  // check either tap was on for button press or not
    }
  else if(buttonState==LOW && sanitisertank1==HIGH && sanitisertank==1){
    digitalWrite(ledPin, LOW);
    myservo.write(80);
    delay(100);
   sanitisertank1 = LOW;
    sanitisertank = 0;
    }
  // put your main code here, to run repeatedly:
  for(int i=0; i<20; i++){
     value += analogRead(sensorPin);
     delay(5);
    }
  avg_value = value / 20;
  Serial.println(avg_value);
  if(avg_value<=500){
    digitalWrite(ledPin, HIGH);
    myservo.write(0);
    delay(7000);
    sanitisertank1 = HIGH;
    if(sanitisertank==0)
      sanitisertank = 2; // check sanitisercrane was on using sensor data
    }
  if(avg_value>500 && sanitisertank==2){
    digitalWrite(ledPin, LOW);
    myservo.write(80);
    delay(100);
    tapState = LOW;
    }
    value = 0;   
}