• "Remote Independent Friendly Field-Logger Electronics"
• Also see http://en.wikipedia.org/wiki/Riffle for description of the stream bed feature "riffle"

Most project activity is happening on Github, visit the Riffle project there: https://github.com/OpenWaterProject/riffle

December 2015 status and 6 week schedule:

• The Riffle is primarily a data logger, designed to be compatible with many kinds of sensors.
• The first small run of circuit boards is being made now from these designs
• In the next couple weeks the Portland Oregon team is going to make sure the basic functions on these boards are working, and then place a larger order to arrive late january 2016.
• In January, we will be looking for people/organizations to test the performance of these boards. If it works with your agendas, perhaps you would like to be part of this beta program -- it will involve testing the performance of the equipment itself, to know if it is ready to be used for actual environmental research.
• The "Coqui" (named after a cute chirping frog from the Caribbean) is a simple design for a conductivity that hasn't changed in a while https://publiclab.org/notes/donblair/09-30-2014/coqui-bbv1-0
• Also see https://publiclab.org/wiki/mae-d-agua -- links to @VJPixel's water quality monitoring project in Brasil that was influenced by the Riffle

Background and Goals

We are working to develop an open source hardware datalogger that can be placed in the field for extended deployments and measure common water parameters like temperature, conductivity, depth, and turbidity.

There have been several iterations of the hardware, including a version based on an ARM chip. Currently, development is focused on an Arduino-compatible board that is programmable through the Arduino IDE. The github repository for the hardware design files (in Eagle) are here: https://github.com/openwaterproject/riffle

The board currently based on the Atmel328p, and is intended to be compatible with the accessibile and ubiquitous Wiring platform (and, by extension, the Arduino IDE).

The width and height of the Riffle-ito device allows the device to fit through the mouth of a standard commercially produced plastic water bottle (20 mm). By inserting the Riffle-ito into such a bottle, along with a few AA batteries, and connecting a thermistor and other sensors that poke out through the water bottle cap, a very accessible water quality sensor may be constructed.

We're also working with the Open Pipe Kit Project in order to find new ways of getting 'live' data from the field online.

References

• Github repo for the Open Water Project: https://github.com/openwaterproject