This project is a simplified version of the Open source data-logger for environmental monitoring (Baker, 2014) that can be run on the Arduino Uno. A description of that project, along with related press and code downloads can be found at Open Source Environmental Data Logger .
The rationale for this project forms part of a broader goal I have of an open tool-chain for biodiversity science. This idea is briefly expanded upon in my blog post Open source data logger - towards an Open tool chain for biodiversity science.
These projects take similar readings but use different methods for output: