MindstormFan

//It is a left side wall follower.

#include <AFMotor.h>
#include <SR04.h>

AF_DCMotor motor3(3, MOTOR34_64KHZ); // Define motor #3, 64KHz pwm
AF_DCMotor motor4(4, MOTOR34_64KHZ); // Define motor #4, 64KHz pwm

int WF_LEFT_US_SENSOR_TRIG = 18;
int WF_LEFT_US_SENSOR_ECHO = 17;