I can't help on the Arduino stuff except for the most basic of stuff (yet). I do remember seeing an article about a home made sensor using wires and table salt encased in paper. When the paper gets wet, the ionized salt + water conducts electricity. On Sat, Aug 18, 2012, at 09:00 PM, Eric Martin wrote: Hey all, I had a close call with my hot water heater this afternoon. I heard on odd noise in the pipes and it turned out that my hot water heater was dumping water out of the overflow valve. Luckily, I found it quick enough, and I'm pretty sure I got it handled for < $150. There's a 1 Gal bucket under the overflow valve, and if I had a water level detector emailing me that water is in the bucket, I could have caught this earlier. I was looking at buying an Arduino and setting up a simple circuit. I know a few people have played with Arduinos, any suggestions on which one to get and how to go about it? I don't need to know how much water is in the bucket, I was thinking about a float type device or even two wires that trip a relay. I just want a heads up that water is in the bucket so I can stop before my basement floods. Thanks in advance, -- Eric Martin _______________________________________________ Wlug mailing list [1]Wlug@mail.wlug.org [2]http://mail.wlug.org/mailman/listinfo/wlug References 1. mailto:Wlug@mail.wlug.org 2. http://mail.wlug.org/mailman/listinfo/wlug -- kstratton@fastmail.us