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.
For an overview of the design philosophy behind the Riffle, 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)
Water Monitor Designs
By now, several instrument designs have been constructed around the Riffle, some of which of are described in an array of Github repositories:
- Openwaterproject -- the main organization on github
- riffle_328 -- hardware designs, instructions and software for getting started with the Riffle_328 datalogger
- riffle_328-conductivity -- Design considerations around conductivity
- riffle_328-depth -- Depth measurement circuit prototype
- riffle_328-turbidity -- Turbidity sensor prototype
- riffle_328-thermistor -- Connecting a thermistor to a Riffle
- riffle_328-i2c -- Connecting i2c sensors to a Riffle
- riffle_328-one-wire -- Connecting one-wire sensors to a Riffle
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
|Riffle Beta project - Methane Gas Sensor||-||-||@Bob||-||-||0 replications: Try it »|
|Soaring Riffle||field-test||-||@cfastie||-||-||0 replications: Try it »|
|Compost is hot, says Riffle||field-test||-||@cfastie||-||-||0 replications: Try it »|
|How to bootload a Riffle #Arduino #water #science #tech||-||-||@zengirl2||-||-||0 replications: Try it »|
|In the heat of the pile||observe||-||@cfastie||-||-||0 replications: Try it »|
|Riffle and Thermsistor||-||-||@pdhixenbaugh||-||-||0 replications: Try it »|
|Blink a LED - Write a 'Sketch' and build a breadboard circuit for the Riffle||build||review-me||@pdhixenbaugh||1h||medium||1 replications: Try it »|
|Riffle test 1||verify||-||@cfastie||-||-||0 replications: Try it »|
|Riffle campout||test-limits||-||@cfastie||-||-||0 replications: Try it »|
|Riffle Device: Water Conductivity Sensor||-||-||@rebeccah||-||-||0 replications: Try it »|
Activities should include a materials list, costs and a step-by-step guide to construction with photos. Learn what makes a good activity here.
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.
2017: The Riffle is currently available for pre-order until March 17.
How to get a Riffle Datalogger
Order the Riffle from the Public Lab Store by March 17th.
The Riffle is open source, so additionally, anyone can take the designs above to a PCB fabricator and have one made, 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.
- EnviroDIY Mayfly Logger. Designed at the Stroud Water Research Center and commercially available through Amazon but currently out of stock (as of Feb 2017).
- Adafruit Feather M0 and Adalogger FeatherWing RTC + SD Add-on. These are two commercial products which snap together.
- Cave Pearl Project logger. Ed Mallon's design for a DIY data logger made from very inexpensive clone components (Arduino Pro Mini, SD card board, RTC board). Requires soldering and care.
|What probes to get with data loggers?||@pdhixenbaugh||over 2 years ago||1||4|
|Is the Riffle for sale at the Public Lab Store?||@cfastie||almost 3 years ago||0||7|
|How similar is the code for the KnowFlow and the RIFFLE data loggers?||@gretchengehrke||almost 3 years ago||3||15|
|How does Riffle compatible with 5V sensors?||@shanlter||almost 3 years ago||1||7|
|How do I install a bootloader on a Riffle data logger?||@warren||over 3 years ago||1||2|
|What would be a good basic activity to test out a data logging device in water?||@stevie||over 3 years ago||1||7|
|What are the differences between the Nano Data Logger and the Riffle?||@warren||over 3 years ago||1||1|
|What are some lessons learned using the Riffle? (Especially Underwater)||@pdhixenbaugh||over 3 years ago||0||1|
|How to use Alkaline Batteries with the Riffle?||@pdhixenbaugh||over 3 years ago||1||5|
|Question: purchase sensor||@frabisog||over 5 years ago||0||2|
Since the Riffle is Arduino-compatible, here are also some Q&A for Arduinos in general: