[repost - I sent the original off-list by mistake!]

Anelok's capacitive slider has made a terrible mistake - it has
caused embarrassment for its boss. Worse yet, the slider gives
no sign of accepting the blame and removing itself gracefully.

I won't pretend to understand how the capacitive slider is intended to work, but reading here:

http://www.embedded.com/design/mcus-processors-and-socs/4415133/Adaptive-Kalman-filtering-for-better-buttons-slider-capacitive-sensing

I was interested in their description of a slider "A slider is a series of touch buttons cascaded together with overlapping transitions and designed specifically to track finger position and movement."

As I understand it, the current Anelok slider is actually a linear slider, not a series of buttons. Are there some alternative layouts of the PCB track that would make the slider less prone to atomspheric variations?


Dave

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