 // The curent motion state.
 motion_states motion_state = M_STOP;
 
-// The action states, so we alwasys no what action is currently happening.
+// The action states, so we always know what action is currently happening.
 enum action_states {
   A_STOPPED,
   A_TRUNDLE, 

int noteDurations[] = { 4, 8, 8, 4, 4, 4, 4, 4 };
unsigned long melody_delay = 10000; // Number of milliseconds to wait before next melody

// The motion states, so we alwasys no where we're going.
enum motion_states {
  M_STOP, 
  M_FWD, 

  // Start singing
  playMelody();
  
  
  int timer_battery = timer.setInterval(battery_delay, batteryLevel);
  Serial.print("Battery tick started id=");
