 
 // CONSTANTS
 
-const int LOOP_DELAY = 100;
+const int LOOP_DELAY = 100;       // Delay of the loop cycle in milliseconds
 
+//   Pins
 const int LED_PIN = 5;
 const int THROTTLE_PIN = 9;
 const int FRONT_PIN = 10;


char statusReport = 'A'; // one-byte status report to controller

bool sensorReportingOn = false;
bool fligthRecorderOn = false;

bool batteryLow = false;
bool batteryOk = true;

  // Get information from Serial
  if( Serial.available() > 0 )
  {
    // Loop through all bytes available
    char Read = '0';
    for ( int currentByte = 0; currentByte < Serial.available(); currentByte++ )
    {
      Read = Serial.read();
      switch (Read) 
      {
        // CONTROL SERVOS
