An H-Bridge controls the direction of voltage through a portion of a circuit by providing two different directional paths through which the current can flow. This is helpful for controlling the direction that a DC motor rotates, among other things. In this lab, a push button was used to send a digital signal to an Arduino which then sent a signal to the H-bridge telling it which path to open or close. When the button is pressed, the H-Bridge flips orientation, and switches the direction of current flowing through the motor. Good times!