Obstacle avoidance car robot

The details of the built are shown in https://github.com/avalappil/Turnnie/blob/master/README.md

The video for the robot can be found in

• Connect the trigger/echo pins of the left ultrasonic sensor to pin 12 and 13. The trigger/echo pin of the right ultrasonic sensor to pin 6 and 7 Arduino pins.
• Connect the left continuous servo to pin two and the continuous servo to pin three.
• The speed should be controlled by updating the line 26 and 27. Once the robot travels in a straight line, the code should take care of the rest.