I made a Gravity Battery

int motorPin = 9;
int IRPin = 10;
unsigned int detect_cycles = 0;
int cycle_limit = 512;
void setup() {
  pinMode(IRPin,INPUT);
  pinMode(motorPin,OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // Serial.println(digitalRead(IRPin));
if(digitalRead(IRPin)==0)
{
  if (detect_cycles < cycle_limit){
  detect_cycles = detect_cycles + 1;
  }
}
 else{
      detect_cycles = 0;
}
Serial.println(detect_cycles);
if (detect_cycles >= cycle_limit){
    digitalWrite(motorPin, HIGH);
}else{
  digitalWrite(motorPin, LOW);
}

}