On Thu, Jan 29, 2015 at 2:47 AM, James Burkart w= rote: > My first thought would be noise, which is what you've already pursued. > Maybe your source of noise is RF somewhere in your environment. Besides t= he > software filter you've already implemented (probably best fix already) yo= u > could try a low pass filter on the pot. I thought the software fix was mostly ok, but it troubled me that it was a problem that cropped up later, after use. > Just throwing another idea out, if you don't absolutely need 8 bit > precision, and you don't want to complicate the design with a display, th= en > maybe two 10 position bcd rotary switches, one could be course adjustment= , > the other fine; you would have 100 values. Not a bad idea. I will talk to the folks who want to use this. I would guess they'll want something that can me more smoothly controlled (ie one control to go from 0 to 100%). But a good thought nonetheless. Josh --=20 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .