Recent content by tomhung

At 6 dollars a pop I'm not going to build a moisture sensor. I want LOTS of moisture sensors that will "report" to the system.  Therefore I need something to pick up the 98db alarm.  I'm thinking of using an Arduino with either a "knock" detection or FFT matching.     www .arduino .cc...

So my friends basemen recently flooded.  They may have to condemn his house due to the extent of the water damage.  This got me thinking about water detection.  However $60+ per sensor is cost prohibited when I need them in near every water source.  I thought of an alternative solution.  Buy the...