POLOLU-2842 is a stepper motor driver module designed for use in robotics and other motion control applications. The module offers a variety of features and configurations, including two chopper-based H-bridges, a wide input voltage range, and multiple motor control protocols. It is designed to work with most popular controlling microcontrollers, including Arduino, Raspberry Pi, and other embedded platforms. Additionally, this module is equipped with various shaft encoder inputs and can sense multiple motors within a single system setup.