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Re: Using an Andymark Arduino on a robot.
Unless you need a larger number of ports, there isn't much you can do on the Arduino that you can't do with just the 'RIO. We controlled some RGB LEDs on our robot last year using a couple of relay ports and spikes, though we could have used 12V relay modules given the small current draw of the LED strips. If you do need an Arduino, I agree that USB is most likely your comms path of choice, because it is supported by hardware buffering and canned software classes on both sides of the connection.
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