This L293D is a monolithic integrated, high voltage, high current, 4 channel driver. With this you can use DC motors and power supplies of up to 36 Volts. it can drive some pretty big motors and it can supply a maximum current of 600mA per channel, the L293D chis is also known as a type of H-Bridge. The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to a load.
L293D Motor Driver Shield
Maximum Current per Channel - 600mA Peak Current - 1.2A
Directly plug into Arduino Uno, Arduino Mega, etc. 4 Channels for DC motors and stepper motors(can drive 4 DC motors or 2 Stepper motors in the same time),
4.5V ~ 36V
Pull down resisters External power terminal for motors Support unipolar and bipolar stepper motors