I found this fun project on the internet to maybe get people more excited about fixing these small problems using electronic theory. It fit in with the narrative, so I added it to the conversation here:
http://devestechnet.com/Home/WarningSystem#WaterTempDesignIt's a cheap, fun project that does everything we want for the Water Temp portion. I am keeping myself busy until that shipment from Thailand arrives with the other circuit.
