Follows continuous wall on right and front of robot. Highly customizable code. May be tweaked for a single direction(hard coding extra movement), different 2 directions, three directions, or arguably four
1)Setup bot as per XLR8 tutorial without interfacing with a Bluetooth Module, i.e. setup chassis, wheels, motors, a power source, motor driver circuit uing L239D, etc. Two wheels with a ball caster should suffice. XLR8 Tutorial
2)Add two ultrasonic sensors for measuring distance, one in front, one in left.
3)Testing: Change values of variables and repeatedly refine variables as per given problem.
4)Reconfigure code to reflect actual Arduino pins.
5)Burn given code on Arduino.