Arduino PID Library
by Brett Beauregard
contact: br3ttb@gmail.com

The PID controller is designed to vary its output within a given range. By default this range is 0-255: the arduino PWM range. There's no use sending 300, 400, or 500 to the PWM. Depending on the application though, a different range may be desired.

SetOutputLimits(min, max)

min: Low end of the range. must be < max (double)

max: High end of the range. must be > min (double)

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