_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. [![riffleStraightUp.png](https://i.publiclab.org/system/images/photos/000/012/225/medium/riffleStraightUp.png)](https://i.publiclab.org/system/images/photos/000/012/225/original/riffleStraightUp.png) [![Riffle-ito.png](https://i.publiclab.org/system/images/photos/000/012/226/medium/Riffle-ito.png)](https://i.publiclab.org/system/images/photos/000/012/226/original/Riffle-ito.png) [![riffleLabel2.png](//i.publiclab.org/system/images/photos/000/014/362/medium/riffleLabel2.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 | ||
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danbeavers | "Do you know how deep you can take the "waterproof" DS18B20 temp sensor? It may be just designed to take it as deep as the cable is long. Yes, it ..." | Read more » | over 9 years ago | |||
ajawitz | "@danbeavers- see todays dive report for details but basically I found the glider floats on the surface until I add enough weight to make it 2 3/4 i..." | Read more » | over 9 years ago | |||
lperovich | "Very nice! I'm curious how fast the gilder moves through the water. I'm currently working on making temperature sensing boards to use with the Ri..." | Read more » | over 9 years ago | |||
danbeavers | "Perhaps then you need to adjust the center of gravity. When it is just floating is it right side up and are the wings horizontal? i think I would..." | Read more » | over 9 years ago | |||
ajawitz | "@danbeavers- Are there any bubbles in the sign board where you mount the wings to the bottle? Did you get all of the bubbles out of the syringe..." | Read more » | over 9 years ago | |||
danbeavers | "I would be real careful about changing the buoyancy. Get ALL of the bubbles out of the system. The sign board should not have bubbles. Are there..." | Read more » | over 9 years ago | |||
sara | "Great Idea! Looking forward to hearing more about how your project develops. " | Read more » | over 9 years ago | |||
ajawitz | "RE:Any Radio? Wow! I had no idea! That could definitely be really useful if you already have compatible equipment for another purpose RE:OpenCPN..." | Read more » | over 9 years ago | |||
danbeavers | "An additional site http://www.discriminator.nl/ais/index-en.html and http://www.discriminator.nl/index-en.html show how to do it with any radio tha..." | Read more » | over 9 years ago | |||
warren | " PCB on the right, of course. " | Read more » | over 9 years ago | |||
warren | "Will Macfarlane (@wmacfarl) kept working on this and has a more compact version which we're not quite sure works. There may be a problem with the 5..." | Read more » | over 9 years ago | |||
aganti7 | "I'm prototyping a sensor network to monitor urban runoff water quality and report unusual / potentially illicit pollution discharges. Unfortunately..." | Read more » | over 9 years ago | |||
mathew | "Is there a github repository for the board? " | Read more » | almost 10 years ago | |||
donblair | "Whee!! I understand the confusion re: K20! It's funny though, I figured most people would've confused it with: Antifungal amphiphilic aminoglyc..." | Read more » | almost 10 years ago | |||
warren | "Wait, is K20 a reference to: the Honda K-series engine the Kaneshiro Takeshi film K-20: Legend of the Mask the Fairchild K-20 WWII-era aerial cam..." | Read more » | almost 10 years ago | |||
warren | "OMG riffle rises again!!!! So happy! " | Read more » | almost 10 years ago | |||
Nashblackcat | "@Mathew Mat: It is great for insulation! ASAS has it cheap so you can try it out and not break the bank. http://www.sciplus.com/p/SUPERGLUE-RED-..." | Read more » | almost 10 years ago | |||
mathew | "@cfastie I guess I can't guarantee they didn't leak a bit, but in my experience the rice sticks to the side of the bottle if there is moisture. I'..." | Read more » | almost 10 years ago | |||
Nashblackcat | "Not sure if this would be an option but Self-fusing Silicone Tape works very well for sealing even in wet and underwater conditions. " | Read more » | almost 10 years ago | |||
cfastie | "That's a great idea to use rice to make the bottle non-compressible. It can also keep your payload dry if a little water leaks in. For the testing ..." | Read more » | almost 10 years ago | |||
mathew | "i've tried heat shrink tubing in other projects-- I don't find that it provides a perfect seal and it has difficulty sticking to glues since its us..." | Read more » | almost 10 years ago | |||
amysoyka | "Have you tried using heat shrink wrap yet as a sealant? Electrical tape also works as shrink wrap - just apply some stream/heat to it and it tight..." | Read more » | almost 10 years ago | |||
mathew | "@Guillaume123 I'm using silicone to seal the sensor in the tube, but I really want to be able to get in and out of the bottle without re-sealing it..." | Read more » | almost 10 years ago | |||
Guillaume123 | "If I were doing this I would use easily obtainable silicone rubber to act as a seal and as a mechanical protection. Guillaume123 " | Read more » | almost 10 years ago |