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Re: Rotation sensors?
You have an axle you want to measure. It is probably for an arm (the OP did not specify). Assuming its for an arm (which has a rotational limit), a potentiometer would measure the exact position at all times and output an analog signal to the cRio. No math necessary (Except to scale the 0-5v into a different range if you want, but you could use the voltage raw without issue). Whenever we have a rotational joint which software has control to adjust, it is standard practice for us to put a potentiometer on it and automate control of it. We always use potentiometers, because they are absolute (you know where you are even if you just booted up, something a quadrature encoder does not give you) and reliable.
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