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**Conductivity** is a measure of a solution's ability to conduct electricity, as measured in Siemens per meter (S/m). (lead image by @ddileona) This page is under development, please add background info: * Info about regulations * Info about ecological or human health impacts * Advocacy leverage points * Constraints we're working within: cost, complexity, sensitivity, time Also see resources on this page: https://publiclab.org/wiki/conductivity_sensing ## Questions [questions:conductivity] **** ## Sensors Here's a list of different conductivity sensors and measurement systems. Also see below for some Do-It-Yourself approaches to measuring conductivity, and [this page](https://publiclab.org/wiki/conductivity_sensing) for more information. * [the Coqui](/wiki/coqui) **** ## Activities Activities for people to test methods (these develop over time) [activities:conductivity] **** ## Existing work [notes:conductivity] ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| EdMallon | "Progress with the LED light sensor technique revealed that you can can also measure temperature by timing the reverse-bias charge decay on ANY type..." | Read more » | almost 4 years ago | |||
| natevw | "Posting a comment so I can get a link to write a full report. " | Read more » | almost 4 years ago | |||
| warren | "Thanks! I'd guess that's true of some of #dfrobot / #knowflow sensors too, since several of theirs ship with buffer and are off-the-shelf probes co..." | Read more » | almost 4 years ago | |||
| wln215 | "I've notices that if these pH meters are left sitting out, or if they get used frequently enough, they need calibration. These sets come with buffe..." | Read more » | almost 4 years ago | |||
| warren | "For one, these sensors don't seem to log data, but they're so easy to use otherwise that they seem pretty good for a workshop, for example! cc @ch..." | Read more » | almost 4 years ago | |||
| EdMallon | "With the school year beginning we have some new instructors spinning up their own courses around the classroom logger released earlier this year. ..." | Read more » | about 4 years ago | |||
| Jjjjjj | "Second test! " | Read more » | about 4 years ago | |||
| Jjjjjj | "Testing! " | Read more » | about 4 years ago | |||
| DitchOntologist | "For your community projects list: EnviroDIY (by Stroud Water Research Center)- https://www.envirodiy.org/ It's part of a broader initiative, WikiW..." | Read more » | about 4 years ago | |||
| CarolineWebb | " Really easy to understand to assembling the Coquí - a Simple Water Conductivity Sensor which is used in academic sector. And will sure share with ..." | Read more » | over 4 years ago | |||
| jack_ponting | "https://www.google.co.uk/ " | Read more » | over 4 years ago | |||
| roberts_ecofarm | " Really liked the tutorials! " | Read more » | over 4 years ago | |||
| EdMallon | " I've been experimenting with the Input Capture Unit on our pro mini's 329p processor, and with it you can make ‘High-Resolution’ Sensor Readings ..." | Read more » | over 4 years ago | |||
| warren | " Noting as a reference, this interesting video on making maps of conductivity data! @mimiss " | Read more » | over 4 years ago | |||
| MadTinker | " @warren You know it's pretty sad when I don't catch things like this myself :smiley: I was referring to the raw data. " | Read more » | over 4 years ago | |||
| warren | "Hi, MadTinker, thanks for the info here. I was just wondering if you meant that the Coqui itself was noisy, or if you're referring to noise in the..." | Read more » | over 4 years ago | |||
| MadTinker | "I've successfully used the DFRobot TDS/conductivity sensor combined with the a Mini-Pearl system. The Coqui was much too noisy. My Arduino setup wa..." | Read more » | over 4 years ago | |||
| xose | " This is fantastic. Thanks for the doc! " | Read more » | over 4 years ago | |||
| shritejkhopade8 | "a screenshot you could post? thaks for posting " | Read more » | over 4 years ago | |||
| warren | " Hi all! With help from @zengirl2, @asnow and @bronwen, we've posted a new Coqui activity with a smaller breadboard and flatter wiring here: https:..." | Read more » | over 4 years ago | |||
| warren | "Hi all! With help from @zengirl2, @asnow and @bronwen, we've posted a new Coqui activity with a smaller breadboard and flatter wiring here: https:/..." | Read more » | over 4 years ago | |||
| warren | " @warren has marked @asnow as a co-author. " | Read more » | over 4 years ago | |||
| EdMallon | "You can use a Pro Mini (or any other Arduino with an Atmel processor) to measure temperature using only the mcu. I think this is the best "No-Par..." | Read more » | over 4 years ago | |||
| EdMallon | "A high-school teacher friend asked us for faster build that is less dependent on soldering because they don't have the budget for that kit. So we'v..." | Read more » | over 4 years ago |