Submission + - Automated Propane Tank Monitoring?
hrbrmstr writes: "We just moved into our new house where we have two decent-sized above ground liquid propane tanks that feed the dryer, hot water heater and backup generator. I googled for solutions for residential propane tank level monitoring (since we need to call the provider when it gets down to 20%) and really didn't find anything of use (there's a Robert Shaw device that won't work in this application). I'm looking to roll my own either with a wired or wireless, low-light camera above the gauge which I could write a program to snap an image of and determine the level. If I go that route, I'd like recommendations on good and preferably inexpensive cameras that can operate at close range to the gauges for said application, but I'm also curious as to whether other DIY slashdotters have rigged something up to do the same thing or have suggestions for replacement gauges that can be tied into a ZigBee, Insteon or X10 home automation system. I realize the very doable low-tech solution of checking the gauges a couple of times per week is not exactly a laborious task, but it would be much cooler to get it going digitally."