_Main image above is by Suzanne McDaniel, and was taken at Island End River in Chelsea, MA, part of the Mystic River watershed. Suzanne's photo was one of the winners of the [MyRWA photo contest](http://mysticriver.org/photo-contest/)._ ## The Open Water Project The Open Water Project aims to - develop and curate open hardware and open software useful for water-related applications - build and facilitate data infrastructures that allow for easier sharing of water data - encourage the growth of communities focused on 'free and open' approaches to water science - support ongoing work by grassroots communities interested in their own local water quality issues To this end, we've been focusing on several initiatives, in particular: **The RIFFLE: An Open Source Datalogger.** 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 - turbidity The main Public lab wiki for this device is [here](http://publiclab.org/wiki/riffle). For recent research and descriptions of projects, you can search for 'riffle' on Public Lab, via [this link](http://publiclab.org/search/riffle). **The Coqui: using audio as a sensor data format.** We're also exploring using audio frequencies to convey sensor readings -- like a modem, but even simpler -- in order to make sensor readings more accessible for people (or to enable data transmission over ubiquitous audio jacks on PCs and smartphones). Read more about this idea on the [Coqui wiki](http://publiclab.org/wiki/coqui), or look for recent updates on Public Lab [here](http://publiclab.org/search/coqui). **A mailing list.** Sign up for the [plots-water-quality email list](https://groups.google.com/forum/#!forum/plots-waterquality), and participate in discussions about low-cost, open source water quality monitoring tools and techniques. [](https://i.publiclab.org/system/images/photos/000/012/225/original/riffleStraightUp.png) [](https://i.publiclab.org/system/images/photos/000/012/226/original/Riffle-ito.png) [](//i.publiclab.org/system/images/photos/000/014/362/original/riffleLabel2.png) ##Fracking and Water Quality + Runoff There are also unique water issues related to frac sand. To get some background information and to explore options for addressing water issues as they relate to frac sand mining in your community, [head on over to the frac sand wiki page](https://publiclab.org/wiki/frac-sand). ## Community Projects We'd also like to use this wiki as a place to post links to other projects that embody an 'open science / open source' approach to hydrology and water technologies. Please add your links below! - InfoAmazonia Network: http://publiclab.org/wiki/infoamazonia-network...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| pdhixenbaugh | "@liz it would be super cool to have a module where the participants could build it this way, and then add components or otherwise change the circui..." | Read more » | over 5 years ago | |||
| pdhixenbaugh | "I have never seen wires like that, and they look awesome! I would love to give my kids the choice of which style of wires to use! Also, these are ..." | Read more » | over 5 years ago | |||
| warren | "I think an activity on /coqui would work. I was also able to confirm that adding a resistor in-line with one of the probe wires lowered the freque..." | Read more » | over 5 years ago | |||
| zengirl2 | "@warren I like these short wires because they tend to stay in place better when inserted, and they also aren't like sloppy spaghetti. :) If you lik..." | Read more » | over 5 years ago | |||
| warren | "OK, also just a note, i had trouble w the placement of the orange wire, which in Leslie's diagram goes to a spot one pin higher than in my version...." | Read more » | over 5 years ago | |||
| warren | "Oh WOW! Do you have any photos of the board, or a screenshot you could post? Thanks!! " | Read more » | over 5 years ago | |||
| sushils | "Hello, I know this a long time but, I just designed a PCB for this circuit that can be easily made at home and is exactly the size of a AA battery..." | Read more » | over 5 years ago | |||
| roberts_ecofarm | "@warren - that looks great. Waiting on some 555 timers so I can try this out too. " | Read more » | over 5 years ago | |||
| warren | "Hi, all, i finally got it working... you know, I think i'd had a couple things wrong, but also the long wires (although easier to insert) make it r..." | Read more » | over 5 years ago | |||
| Nireeksha | "@Nireeksha awards a barnstar to donblair for their awesome contribution! " | Read more » | over 5 years ago | |||
| Nireeksha | "@Nireeksha awards a barnstar to donblair for their awesome contribution! " | Read more » | over 5 years ago | |||
| warren | "I'm having trouble getting our demo Coqui to work -- these breadboards don't really last... but just to break out this one point, @liz - you mentio..." | Read more » | over 5 years ago | |||
| roberts_ecofarm | "Stevie, I'm working on a project where we need to monitor changes in water quality. I posted about it here https://publiclab.org/n/17383. I'm ge..." | Read more » | over 5 years ago | |||
| stevie | "Hi! Can you clarify the question? " | Read more » | over 5 years ago | |||
| liz | "Hi @zengirl2 , you are awesome for re-working the wiring diagram! i just followed your updated instructions in preparation for doing this activity ..." | Read more » | over 5 years ago | |||
| smmontgom | "Hi @liz, Thanks for your compliments. Our testing utilizes a standard sample collection kit with 2 bottles [1st draw, flush, 2nd draw] that is then..." | Read more » | over 5 years ago | |||
| liz | "Hi @smmontgom , I enjoyed reading your poster on your previous sampling protocol. Thank you for sharing! I am a big fan of publishing data in this ..." | Read more » | over 5 years ago | |||
| nshapiro | "Very cool! it would be great to have more of that info on your sampling and analyzing approach on your website as most project don't have as advanc..." | Read more » | over 5 years ago | |||
| smmontgom | "Hi @nshapiro, We started out using computer vision to analyze simple strip tests like you can get at your local hardware store for their ease of us..." | Read more » | over 5 years ago | |||
| nshapiro | "Interesting! could you post more details on what kind of lead test is used and what your sampling protocol is? thanks! looking forward to learning ..." | Read more » | over 5 years ago | |||
| zengirl2 | "This is a great write-up on this activity. As @warren mentioned I did this activity at MakerFaire with a very broad age range 6-60. Because I was b..." | Read more » | over 5 years ago | |||
| warren | "Love this! Super :smiley: Our breadboards didn't have nice Vcc or Ground sections like those pictured in the activity, so we decided to use one ro..." | Read more » | over 5 years ago | |||
| WaterGeek | "Thanks @Bronwen, I see it now. I'll run through the wiki. The goal would be to do water quality monitoring, just like the Riffle is intended for. I..." | Read more » | over 5 years ago | |||
| WaterGeek | "Thanks @Bronwen, I see it now. I'll run through the wiki. The goal would be to do water quality monitoring, just like the Riffle is intended for. I..." | Read more » | over 5 years ago |