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---------------------------------------------------
  |                                                 |
  |              [ Ultrasonic Sensor ]              |
  |                    (Front)                      |
  |-------------------------------------------------|
  |                 [ IR Receiver ]                 |
  |                                                 |
  |        --------------------------------         |
  |        |          [ Arduino ]          |        |
  |        |  Power | GND | Motor Pins     |        |
  |        --------------------------------         |
  |                                                 |
  |        -------------------------------          |
  |        | [ Motor Driver ]          |            |
  |        | (L298N or L293D)          |            |
  |        -------------------------------          |
  |                                                 |
  |        [ Battery Pack ]                         |
  |-------------------------------------------------|
                (Back / Power Source)