On Mon, 10 May 1999, Benjamin Petersen wrote:

> 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.

Check out Stephen Bolt's "Green Thumb", it's *very* similar to your
suggestion, but much simpler:

        http://www.xs4all.nl/~sbolt/e-groeneVinger.html

His site also describes other interesting projects: very low power BEAM
robots, and a "spider" that uses an IR sensor/emitter as a form of radar!


- j