motor shield for arduino

Generally speaking, you're not going to find a shield with more than two steppers. Most of the stepper shields are using standard H-bridges, rather than than specific stepper-driver IC's, resulting in a high number of Arduino pins being used.

The correct way to go is to use an external driver, it will use less pins per motor (as few as two: one for stepping and one for setting direction), isolate your board from the high-power inputs used by the steppers, and there are LOTS of 4+ axis driver boards on the market, just not as arduino shields. (Check out Probotix, Gecko, Easydriver, Pololu, etc.)

Some of these will even use RS-232 control logic, and most CNC application boards support parallel interfaces, allowing greater control of other peripherals through the same board. If you want to go cheap and easy - use the easydriver or pololu drivers and wire them up. If you want to go high performance and reliability - go with the Gecko G540 - it won't let you down =)

!c

Oops. Already reccommended

Just think Cheap Coach Handbags for a few seconds, have you already seen a lady who has not a handbag, in Coach Factory which she announced with a difference? For Coach Purses Outlet, the most famous brand of handbags is "Coach Outlet Online". And this Coach Outlet Store Online can a great gift for a woman. Excellent and exquisite Coach Outlet Online and Purses for over 60 years make you feel like a queen with their elaborate design and rich fabric. If your eyesight Coach Outlet Online is b enough, Coach Outlet can be quickly in your hearts and eyes. Louis vuitton purses are made from high quality materials and high-skilled workers who are proud of what they are prepared produce. And Coach Outlet is a great gift because there are many different styles that could be coordinated with different personalities together. Cheap Coach Purses are of high quality and aesthetic design. Yes, brand Coach Factory Outlet name handbags are extremely attractive; and as time goes by Coach Handbags Outlet, your investments might shed their authentic charm Coach Outlet Canada. Shopping for designer Coach Purses from our Coach Outlet
can be a very nice experience. Coach Shoulder Bags are all about style.
Each Coach Bag speaks of class and no matter where and when you carry
it, you are sure to get a few impressive looks your way Coach Outlet Online. When you have desired to expand your social life then it's important to take support of your louis vuitton handbags, From http://www.coachoutletonlinepurse.org/ which can change your style and are the most popular on the market. Coach Factory Outlet is made of unparalleled quality and look beautiful and functional.