Remote-Controlled Car Transformed Into A Robot With Arduino. By Elizabeth Fish. Apr 2, 2012 7:13 am PDT ... Randy added a PING ultrasonic sensor to the front of the vehicle too.

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus]&#82… ...