  1  - not connected (Serial write)
  0  - not connected (Serial read)
  
- A0 - Motor current sensor (not used)
- A1 - Motor current sensor (not used)
+ A0 - Battery LED 1
+ A1 - Battery LED 2
  A2 - Battery LED 3
  A3 - unused
  A4 - Thumbstick vertical

 12 - Motor A direction
 11 - (blocked by shield)
 10 - Infrared remote receiver
 9  - Battery LED 1 (cut brake connect on bottom of the shield)
 8  - Battery LED 2 (cut brake connect on bottom of the shield)
 7  - Ping trigger
 6  - Motor B pwm
 5  - Motor A pwm

  Serial.println(timer_battery);
  
  
  actionStop();
  batteryLevel();
  whiskersCalibrate();

}
