The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. Both devices are designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.
This Breakout-Module is DC motor driver using L293D. This is most commonly used driver circuit in hobby robots. This can control 2 DC Motors; their direction using control lines and their speed using PWM. you can Interface L293D with any microcontroller.