ITEM NAME:L293D Motor Drive Expansion Shield For Duemilanove Mega UNO R3 AVR Description: 2 connections for 5V 'hobby' servos connected to the high-resolution dedicated timer - no jitter! Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5% resolution) Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil, interleaved or micro-stepping. 4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, 4.5V to12V Pull down resistors keep motors disabled during power-up Big terminal block connectors to easily hook up wires (10-22AWG) and power Reset button 2-pin terminal block to connect external power, for seperate logic/motor supplies Fitment : for Mega, Diecimila & Duemilanove Package Includes: 1x Motor Drive Shield Expansion Board L293D.1x Motor Drive Shield Expansion Board L293D. Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil, interleaved or micro-stepping. Reset button. Pull down resistors keep motors disabled during power-up.