We wanted to let you know about our groups contribution to the world of open science hardware, with the hope that you could pass the word on to your members who are working to decentralize science. Instruments that work in aquatic environments are among the most expensive environmental sensors available, and this can be a significant barrier for researchers, and citizen scientists who want to protect wetlands and aquifers.
For the last four years, the Cave Pearl Project has been developing and testing underwater prototypes built around the Arduino electronics platform. The goal has been to create a robust data logger system that is inexpensive enough to bring multi-unit deployments within the range of very limited budgets, while still being buildable by to those with modest electronics experience. That work has been published in the open access journal Sensors
http://www.mdpi.com/1424-8220/18/2/530 (free PDF download)
Step by step build instructions are on the projects website:
And operating code that is easy to understand & modify is available on Github:
These resources provide a complete DIY data logger solution that can be constructed from inexpensive components, and programmed to support sensors for a range of monitoring applications using code libraries from the Arduino community. Two different environmental housings can be constructed from PVC fittings using basic shop tools, including one that covers the full depth range available to research divers on air. Open source prototyping platforms are enabling people around the globe to build their own instruments and do primary research. It is hoped that the release of the Cave Pearl paper supports this endeavor in both research and education.