my project Capacitive Sensing LED dimmer 12F1822 via PWM

[Heckler]

@Barry... building this just for hobby fun. And always enjoy using something I build myself. Probably just build a few for myself. Possibly thinking of using it as I teach electronics to Boy Scouts for the electronics merit badge. The final requirement is for them to build a project.

The touch sensor on my proto type is a bit of copper tape (Scotch #1245) stuck to my desk with regular scotch tape over the top as an insulator.

In the final I envision a small ckt board, say 1" x 2" or so, with a "touch" area for the button.

@Charlie... I did not know that there was an "HV" pic. Thats cool. Might have to take a look at getting a couple of samples.

So regarding the noise... A small cap across the power input is probably a good idea. What problems might the noise cause? Intermittent operation? I took a look with an o-scope across the power input (vss, vdd) and didn't see what I thought was a lot of noise (lot is a relative term though)

Yeah I am clear on the fact that a Zener supply is wastefull, but hey 2ma, though your point is well taken. I just don't have one of those LVD regulators on hand.

Again, just an exercise in understanding how to set-up and use the cap sense and maybe come up with a little fun project.

Really my signature line says it all for me.
Kinda like, why does one seemed determined to solve a rubics cube. (and no, I can't)
BUT I can easily waste? 4 or 5 hours trying to figure out the cap sense set up and coding on a little 8 pin pic