Russell, this is indeed a good introductory issue !
However, I have seen an 1Kg kitchen scale, with 8 pF full delta-C
variation for the whole 1Kg range, and the sensor was connected directly
to the microcontroller !. The resolution was about 1g and precision about
10g. How they did this ?


top 10 wishes,
Vasile
http://surducan.netfirms.com


On Wed, 17 Sep 2003, Russell McMahon wrote:

> [EE]: Excellent capacitive sensors tutorial
> 17 pages
>
> Medium techo - nothing overly complex.
> Some excellent ideas.
>
>         http://www.capsense.com/capsense-wp.pdf
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
> email listserv@mitvma.mit.edu with SET PICList DIGEST in the body
>

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body