Hi All, I have built an automated lawn spraying system for my backyard. A PC is used to turn ON and OFF the water valve periodically according to a preset schedule. The problem now is, it may sometimes be raining during, or shortly before the spray time, which would simply waste water. Is there any commerically available rainfall detector that could be interface to my PC? I want to use it to stop unnecessary spraying. Or, I could build my own circuit for doing this, does anyone get such a circuit? Thanks in advance John ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com