I am using a pot and the high resolution mode of an A/D on the 16f1828 .=20
I am directly controlling a 10 bit PWM with the result of the 10 bit A/D=20
input. I have a problem in that I want to avoid the noise of the A/D=20
input from affecting my output. This happens if my pot is set just=20
between two levels so the output fluctuates between two levels. Not very=20
much only 1 or 2 levels out of the 1024 but this is significant in my=20
application. I really only want the output to change if I physically=20
move the pot. Currently I have fixed it by only outputting to the PWM on=20
the output if the input changes by more than 2, assuming if it does I am=20
moving the pot. This works in that my output is steady however it=20
effectively lowers my resolution as well since the output now steps only=20
when the pot moves more than 2 values. I was wondering if I should set=20
up a timer interrupt for say 1 second and  if the output changes by more=20
than 2  during that second assume the pot is being moved and allow level=20
increments of 1. If it didn't move by more than 2 during that second=20
assume the pot isn't being moved and lock the output. Am I on the right=20
track here or can anyone recommend another technique .
Jim


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