Cheap Environment Monitoring with Nagios

About 4 years ago I needed a cheap solution to monitor temperature, humidity, and water leaks with Nagios. At the time, I was unable to find cheap cost effective temperature sensors which had Nagios plugins already written. There were links on the Nagios homepage to some expensive sensors with a coupon code bringing the cost down to… still over $200/sensor. My solution was to write a few new Nagios plugins and to use slightly less-expensive sensors from Digi. With simple serial communication, they seemed like the best bet. I will soon post a page on this site dedicated to the plugins I’d like to share, but for now you can find themĀ here.