- Tue May 13, 2008 4:44 am
#48163
So I've tried to figure out how to do this, but I'm coming up blank. I'm working on a hand-held device that will have a coin-cell lithium battery on board. The battery will likely be visible, and I was wondering if it's possible to turn that into a touch sensor. Given the fact that every article and app note on capacitive sensing doesn't have an active source hooked up to the sensing circuitry, I haven't had much luck with internet searches.
I thought that maybe putting a DC-blocking capacitor in series with the battery might allow me to make some sort of brief measurement at the instant that somebody touched the sensor by using some sort of capacitive sensing. Any ideas?
I thought that maybe putting a DC-blocking capacitor in series with the battery might allow me to make some sort of brief measurement at the instant that somebody touched the sensor by using some sort of capacitive sensing. Any ideas?