This one will sink 150 mA. http://www.sparkfun.com/commerce/product_info.php?products_id=734 You can source 12V and tie the grounds together. It's based on the 595 so the tutorial applies.
This one will sink 150 mA. http://www.sparkfun.com/commerce/product_info.php?products_id=734 You can source 12V and tie the grounds together. It's based on the 595 so the tutorial applies.