Riffle: an Open Source Water Monitoring Approach

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](https://publiclab.org/wiki/open-water). (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](https://publiclab.org/wiki/riffle_design_philosophy). Public Lab has supported development of an [Arduino](https://www.arduino.cc)-compatible [Riffle version - a datalogger enclosed in a water bottle](https://github.com/OpenWaterProject/riffle_328). 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](https://github.com/bgamari/riffle)) **** # Riffle 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](https://github.com/OpenWaterProject) -- the main organization on github - [riffle_328](https://github.com/OpenWaterProject/riffle_328) -- hardware designs, instructions and software for getting started with the Riffle_328 datalogger - [riffle_328-conductivity](https://github.com/OpenWaterProject/riffle_328-conductivity) -- Design considerations around conductivity - [riffle_328-depth](https://github.com/OpenWaterProject/riffle_328-depth) -- Depth measurement circuit prototype - [riffle_328-turbidity](https://github.com/OpenWaterProject/riffle_328-turbidity) -- Turbidity sensor prototype - [riffle_328-thermistor](https://github.com/OpenWaterProject/riffle_328-thermistor) -- Connecting a thermistor to a Riffle - [riffle_328-i2c](https://github.com/OpenWaterProject/riffle_328-i2c) -- Connecting i2c sensors to a Riffle - [riffle_328-one-wire](https://github.com/OpenWaterProject/riffle_328-one-wire) -- Connecting one-wire sensors to a Riffle # Sensor Designs We've started to summarize some of the approaches to sensing water parameters like conductivity and turbidity: - [Sensing conductivity](https://publiclab.org/wiki/conductivity_sensing) - [Sensing turbidity](https://publiclab.org/wiki/turbidity_sensing) # Activities Here are some activities the Public Lab community has conducted using the Riffle [activities:riffle] # Project Status 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. https://publiclab.org/questions/warren/06-12-2017/what-s-the-battery-life-of-the-nano-data-logger#answer-comment-16862 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 # How to get a Riffle Datalogger 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. # Riffle Alternatives 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. 1. [EnviroDIY Mayfly Logger](https://envirodiy.org/mayfly/). Designed at the Stroud Water Research Center and commercially available through Amazon but currently out of stock (as of Feb 2017). 2. [Adafruit Feather M0](https://www.adafruit.com/products/2772) and [Adalogger FeatherWing RTC + SD Add-on](https://www.adafruit.com/products/2922). These are two commercial products which snap together. 3. [Cave Pearl Project logger](https://hackaday.io/project/6961-the-cave-pearl-project). 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. 4. see more open source data loggers collected on the [Data Logging page](/wiki/data-logging) **** ## Questions [questions:riffle] **** ###All updates related to the Riffle [notes:riffle] **** ##Related Questions Since the Riffle is Arduino-compatible, here are also some Q&A for Arduinos in general: [questions:arduino] The Riffle is also a part of a larger area on data logging. Here are some Q&A asked more generally: [questions:data_logging] [questions:nano-data-logger]...

Author Comment Last activity Moderation
cfastie "There are some important differences between the Riffle and the Nano Data Logger. The two loggers have different real time clock chips. The one o..." | Read more » about 5 years ago
pdhixenbaugh "Thanks @rfdave! This is a great start! I am going to inquire about what kind of accuracy @bhickman got with his as the next step. @liz roping you ..." | Read more » about 5 years ago
rfdave "Hi @pdhixenbaugh I finally got some time to look at both schematics. The Analog Devices one is ~ 3x as many parts adn @bhickman design, although bo..." | Read more » about 5 years ago
pdhixenbaugh "Hello @rfdave ! I would be interested in getting this rolling! Thank you so much for providing that link to the design! I think there are many folk..." | Read more » over 5 years ago
rfdave "@pdhixenbaugh have you had a chance to make much progess on this? Here is a link to a circuit design from Analog Devices that claims to have prett..." | Read more » over 5 years ago
cfastie "Regarding using a battery with voltage near the top of the acceptable range, apparently some voltage regulators convert the voltage to the desired ..." | Read more » over 5 years ago
cfastie "I don't know how low the voltage has to get before the Riffle starts to misbehave. @Donblair designated the 3.5v to 6v range, so he must have based..." | Read more » over 5 years ago
pdhixenbaugh "Thank you for this informative answer! I have a few followup questions. On the adafruit description for their 3 x AAA enclosure, they say that it ..." | Read more » over 5 years ago
cfastie "What are the voltage requirements: are there upper and lower limits? The silkscreen on the Riffle says 3.5v to 6v for the "general" power connecti..." | Read more » over 5 years ago
pdhixenbaugh "@warren is the question:question tag necessary? And was there a recent change with the editor? The new editor seems to be fighting with the old one. " | Read more » over 5 years ago
NCartmell "I've built one of your fine Coqui circuits. It works very well with the LDR (photo resistor). Is there a recommended distance between the metal pro..." | Read more » over 5 years ago
NCartmell "I can help with probe material: Regarding Stainless Steel, general purpose grade is 304 and marine grade is 316. Stainless steel, particularly 304 ..." | Read more » over 5 years ago
jesseslone "@donblair I noticed you have a more recent post about turbidity, I was wondering if you would choose a different light sensor than the Adafruit one..." | Read more » almost 6 years ago
liz "Ah great topics. Is everyone able to join tomorrow's 3pm ET call? " | Read more » almost 6 years ago
warren "I love that doodle too - maybe it could be used lower down on the page, or in an activity. It might read better horizontally, though, in a web page..." | Read more » almost 6 years ago
liz "Hey @pdhixenbaugh, the new lead image looks great! I wanted to invite you and anyone else following along to join us this coming Tuesday at 3pm ET ..." | Read more » almost 6 years ago
pdhixenbaugh "Just added the "how to get a riffle" section to the wiki. Check it out: https://i.publiclab.org/wiki/riffle " | Read more » almost 6 years ago
pdhixenbaugh "So do I! I'll go ahead and update the image. I'd also love to find a place to have this cool old doodle/sketch " | Read more » almost 6 years ago
liz "I think that image is great " | Read more » almost 6 years ago
warren "Now that those are tagged (and there are plenty of ways to change/improve that tagging, surely), you could put an activity grid on the Riffle page ..." | Read more » almost 6 years ago
warren "Oh and that image is from @cfastie's Frozen Riffle post. " | Read more » almost 6 years ago
warren "Hi, Patrick - I'm not sure what you, @liz, and @donblair are up to on this, but I was adding some helpful tags so many projects show up with listed..." | Read more » almost 6 years ago
pdhixenbaugh "I've tried uploading *blink and a few other things, but it looks like nothing is uploading. The riffle still appears to be running the previous ske..." | Read more » almost 6 years ago
warren "Hi, Patrick - just a note that we're currently doing a big search revamp and searching should improve pretty soon. Thanks! " | Read more » almost 6 years ago