const int ir= A4;
int dis =100;
void setup() {
  // put your setup code here, to run once:
pinMode(A4, INPUT);
Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
int read(analogRead(ir));
float vol =read*(5/1023);
if(vol<=3){
  Serial.print("OBJECT DETECTED");
}
else{
  Serial.print("DIDN'T DETECT ANY OBJECT");
}
}