This is a simple library for controlling the L298N Stepper Motor Driver Controller Board Dual H Bridge Module. This module is readly available on amazon and is easy to use for single/dual motor control or as a stepper motor driver.

http://osoyoo.com/2017/07/24/arduino-lesson-obstacle-avoidance-sensor/ This object inverts the return to show True when the sensor detects an obstacle. The Enable Pin is onlused on the 4 Pin version of this sensor and is used to turn the pin on and off.