const int enablePin = 4;  // Pin to enable/disable
const int ledPin = 5;     // Pin to control an LED

void setup() {
  pinMode(enablePin, OUTPUT);  // Set enablePin as output
  pinMode(ledPin, OUTPUT);     // Set ledPin as output
  digitalWrite(enablePin, HIGH);  // Start with the component (LED) on
}

void loop() {
  // Turn on the component (LED)
  digitalWrite(enablePin, HIGH);
  
  // Do stuff here (like reading data)
  
  // Turn off the component (LED)
  digitalWrite(enablePin, LOW);
  
  // Wait before repeating
  delay(1000);
}