The Riffle is a collection of designs that take an open source approach to water monitoring, with...
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The Riffle is a collection of designs that take an open source approach to water monitoring, with the intent of making gathering water information easier and more accessible. It is part of Public Lab's Open Water Project. (Lead image by @cfastie)
For an overview of the design philosophy behind the Riffle, and what constraints and uses it was aimed at, see this wiki page.
Public Lab has supported development of an Arduino-compatible Riffle version - a datalogger enclosed in a water bottle. This is great, because the Arduino community is huge, and lots of knowledge and troubleshooting resources are now applicable to the Riffle project. (The first Riffle design was an ARM-based datalogger board enclosed in PVC)
By now, several instrument designs have been constructed around the Riffle, some of which of are described in an array of Github repositories:
We've started to summarize some of the approaches to sensing water parameters like conductivity and turbidity:
Here are some activities the Public Lab community has conducted using the Riffle
Add an activity or request an activity guide you don't see listed
Activities should include a materials list, costs and a step-by-step guide to construction with photos. Learn what makes a good activity here.
2017: A second small order of Riffle_328 boards was shipped on May 30th, and is on its way to the Public Lab kits department in Portland, Oregon. From there it will be sent to Public Lab community members who ordered them. The Riffle was available for pre-order until March 17.
2016: A small order of Riffle_328 boards arrived late April 2016, and were sent to Public Lab community members as a way of testing the design and informing further development.
Projects using this riffle can be found at https://publiclab.org/tag/riffle and https://publiclab.org/tag/riffle-beta
The Riffle is open source, so if Public Lab is not currently offering it for sale, anyone can take the designs above to a PCB fabricator and have one made, copy and remix the design, or investigate other dataloggers.
The following dataloggers also have a real time clock and log to a micro SD card as the Riffle does. All of them are based on Arduino and will run more or less the same sketches. These are all open source hardware.
Ask a question or help answer future questions on this topic
Since the Riffle is Arduino-compatible, here are also some Q&A for Arduinos in general:
The Riffle is also a part of a larger area on data logging. Here are some Q&A asked more generally: