Felix wrote: > infinite mechanical life Yup, designed for immortality :-)
> The use of the same area for slide and "click" touching could be prone to > click mistakes by accident. I believe they should be separate zones. Complete separation would eat a lot of precious space and possibly even need more conannts. But how about the concept I posted last year ? There's just one sensor but different areas of it have different roles: http://downloads.qi-hardware.com/people/werner/anelok/tmp/touch.pdf More details: http://lists.en.qi-hardware.com/pipermail/discussion/2013-December/010426.html The bit about "one variable" was wrong, as I now realize. There are good reasons for having a little apparent redundancy. > I'm curious about this, why you discarded the other slide design? You mean the three triangles on a sawtooth ? I didn't try it because I wanted to first see how a simpler sensor would work. I now also understand that the electrode design isn't so great, because I would get three poorly correlated channels, making it very hard to remove the common mode disturbances. Freescale have a nice text on sensor design that also treats some real-life issues. Multi-channel slider designs are shown on pages 19 and 20: http://cache.freescale.com/files/sensors/doc/app_note/AN3863.pdf Surprisingly, they don't mention the double triangle design they use on their FRDM-KL2xZ boards. - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
