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Re: computer on the robot
Do you really need another computer on your robot? The cRio contains a 400mhz PowerPC processor that all of your code runs on, and an FPGA for hardware PWM output, counters, and other IO. That should be more than enough power for anything reasonable. In 2008 and previous, the processor was a small PIC that occasionally ran out of space and lacked hardware floating-point capability, making it difficult to do trig or other complex math operations without using lookup tables. That's when it would have been useful to have a co-processor, not now.
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"Sometimes, the elegant implementation is a function. Not a method. Not a class. Not a framework. Just a function." ~ John Carmack
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They are "Human Dream and Inspiration Enablement Devices" but since that takes too long to say and explain I use the word "robot". - Foster [more] 
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