Annie, thanks. Belive me, after a week like this I really needed this. It took awhile to pull myself off the floor and dry the tears ;-) I can only add; staring at the sky with an encoded wireless switch while listening to the old band, Weather Report ;-) - Tom At 01:25 PM 8/26/99 -0700, Anne Ogborn wrote: >You can make a cylinder with a "drumhead" of stretched thin >plastic (a real drumhead would work), and put a mic under it. >Amplify the mic and look for transitions. >The sound of water drops hitting the drumhead and making >it go "thump" will be much louder than any outside noise. > >I'd divide time into 1 sec packets, and flag each packet that >has a transition. >If a sliding window average of the last minute has > 45 set packets, >it's raining. > >For even more noise resistance, put a second mic under a piece of >thick styrofoam insulation board, exposed on the sides. If this second >mic hears something, that sample is omitted from the window. So it won't >go off on the 4th of July when neighborhood kids shoot off firecrackers. > >Other way is a funnel leading to a container with a small hole in it. >Put a water level sensor (zillions of circuits for this out there) in it. >the water comes in at a rate proportional to the rain, and out at a rate >proportional to the level. > >Don't forget to mount your sensor where the sprinkler won't affect it! > >Now, the wierdest way - >find a weather site on the net and write some software that figures out >if the forecast includes rain for your area. If the forecast includes rain, >don't water. > >Making your own page with one of those "weather underground" banners might be >an easy, controllable way to do it. > >-- >Anniepoo >Need loco motors? >http://www.idiom.com/~anniepoo/depot/motors.html ------------------------------------------------------------------------ Tom Handley New Age Communications Since '75 before "New Age" and no one around here is waiting for UFOs ;-)