All of the source code is managed on GitHub, and freely available under the GPL license.
The charts are from a Google Framework that renders both
line graphs as well as gauges that represent different key data about growing the plants.
The sensor scripts leverage a SDK from AWS called Boto that enables invoking different API's directly from the Raspberry Pi. This is python based and examples of different functions include uploading photos directly from a RaPi.
The Twitter Apps framework is used to post tweets to the social media site directly from the Raspberry Pi using different API's.