I have an (old) idea for a new pic project.
I would like to attatch this device to a plant and make it beep when the
plant needs water.

I was thinking about using :
1 3v litium batt
1 PIC12c508
1 Pizo-beeper
2 metal pins pluged into the plants pot (or what ever you call it)

I would like to make some kind of A/D converter, and as far as i can recall
it can be done with a cap and a res.
And something with pulsing an output and reading an input.I was thinking
that the water alarm should NOT beep during the night, messured either by an
internal clock or by a photosenser. Dryness alarm should be dynamic.

When this project is done it will ofcause be public.

Regards
Benjamin Petersen