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The DARC DC Motor Controller Board is based on the ST L298 Full H Bridge Driver IC. There are two of these ICs mounted on the boad allowing the user to control up to 4 DC motors or 2 stepper motors. Each L298 IC can handle 4A of current so it is a pretty hefty motor driver board. I have heat sinks that will mount to the L298s but they are not in this photo for clarity.

Schematics and board files are available below.

Schematic in pdf form

schematic in Eagle format

board file in Eagle format

zip file of all files to send to board fab house

The board shown was made by PCBFabExpress.com based in California. They do 5 boards at $13 each unless you exceed 25 holes per inch like I did on this board for which they chage you another $50 per order. I recommend pcbfaxexpress. Good customer service and good quality boards.