CSE001A L293D Motor Drive Shield

CSE001A L293D Motor Drive Shield Expansion Board for Arduino. Arduino is a great starting point for electronics, and with a motor shield it can also be a nice tidy platform for robotics and mechatronics. Here is a design for a full-featured motor shield that will be able to power many simple to medium-complexity projects.

2 connections for 5V 'hobby' servos connected to the Arduino's 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 to 25V; 
Pull down resistors keep motors disabled during power-up;
Big terminal block connectors to easily hook up wires (10-22AWG) and power; 
Arduino reset button brought up top; 
2-pin terminal block to connect external power, for seperate logic/motor supplies;
Tested compatible with Mega, Diecimila, & Duemilanove;