Using Ubuntu 10.10, Cacti monitoring software, and a deal extreme USB Powered Thermometer + Hygrometer I am able to remotely monitor my indoor grow environment. I am not going to cover how to install and setup ubnutu/cacti, but i will post my cacti templates as well as the custom c-binaries to read the usb stick. Also, please note the www-data (or cacti user) will need sudoers access to the hardware to run these c-binaries. In my configuration i have put the binaries in ‘/usr/bin/’. You can download the gzipped tarball with xml templates and binaries here. Also I'll answer any questions to help you get setup. USB Powered Thermometer + Hygrometer (-40-120'C) sku 42591 1 Centigrade Weekly (30 Minute Average) Centigrade Graph in Cacti Fahrenheit Daily (5 Minute Average) Fahrenheit Graph in Cacti Humidity Monthly (2 Hour Average) Humidity Graph in Cacti