Vegimeter
Copyright (c) 2011-2013 Sladeware LLC
The purpose of the Vegimeter application is to use the minimal amount of energy to heat a container of potting soil to within a specific temperature range, with the assumption that the ambient temperature is below the desired range so that heating the soil is required. This is to provide nearly ideal soil temperature to plants' roots so as to optimize their nutrient transport.
Please visit https://sites.google.com/site/vegimeter2/ and http://www.bionicbunny.org to learn more about Vegimeter device.