**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 | ||
|---|---|---|---|---|---|
| donblair | "Hah, just saw that @mathew posted a link I was reading this morning, but forgot to include: http://www.electroschematics.com/6923/555-low-voltage-..." | Read more » | over 8 years ago | |||
| EdMallon | "@ cfastie: To be honest I probably would have started with Geir Andersen's shield to if I had known about it back at the beginning of my project. A..." | Read more » | over 8 years ago | |||
| donblair | "Oh gosh -- Chris, thanks for tagging me in this thread -- I had no idea that this existed! Wow, Ed -- what amazing work you've been doing!! It's ..." | Read more » | over 8 years ago | |||
| cfastie | "Thanks for the tip about cheaper SD card modules and RTC modules. I see now how you made your pro-mini logger for $13.00. One of those sensors I l..." | Read more » | over 8 years ago | |||
| EdMallon | "Not sure about that Arduino clone, as I don't know about the chips it's using. But for less than 4 bucks just try it and see. Just don't expect the..." | Read more » | over 8 years ago | |||
| cfastie | "I am really impressed with the new tutorial. Thanks for that great effort. This definitely lowers the barrier for me to try this. I just dove into ..." | Read more » | over 8 years ago | |||
| EdMallon | "One of my high school teacher friends mentioned that he wanted add Arduino based projects to his science classroom, but after I posted those DIY gu..." | Read more » | over 8 years ago | |||
| EdMallon | "It's been on my to-do list for ages, but I finally got around to posting the build tutorials for the basic 3 component data logger based on Promini..." | Read more » | over 8 years ago | |||
| EdMallon | "Just back from our recent fieldwork, and we've had great success with the DS18b20 temperature strings that we deployed back in March. http://edwar..." | Read more » | almost 9 years ago | |||
| EdMallon | "Hi again everybody. I finally got around to posting the Cave Pearl Project on Hackaday, and realized that it turned out to be a pretty concise sum..." | Read more » | almost 9 years ago | |||
| GreenChemist | "Hi Warren, Thanks. I am a chemical engineer who always worked in Medical and Safety industries. Currently I am looking for a new position anywhere ..." | Read more » | about 9 years ago | |||
| warren | "It's a good point -- esp. always to be sure that the scope of the test is clear. The idea here was more exploratory, but in general this kind of co..." | Read more » | about 9 years ago | |||
| GreenChemist | "Hi Warren, Indeed the test would not find the bacteria, you need a polymerase chain reaction (a PCR test), or grow a culture. I am not sure if this..." | Read more » | about 9 years ago | |||
| warren | "Hi, Don - sorry, you never wrote back so I hadn't changed the title until now - it now says "Coqui" only - thanks. The conclusion you draw: it s..." | Read more » | about 9 years ago | |||
| GreenChemist | "Hi Warren, I am new at this, so maybe I missing the ball, but isn't one of the reason why not to drink from the hot tap the possible presence of L..." | Read more » | about 9 years ago | |||
| kgrevera | "I will be attending! " | Read more » | about 9 years ago | |||
| neilhendrick | "I will be attending! " | Read more » | about 9 years ago | |||
| kgrevera | "I will be attending! " | Read more » | about 9 years ago | |||
| warren | " PCB on the right, of course. " | Read more » | about 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 » | about 9 years ago | |||
| Kshatrya | "An audio plug like the one you're using could easily make a good standard electrode. I have two suggestions that may help. FIrst, use a gold plated..." | Read more » | about 9 years ago | |||
| EdMallon | "Hi Everyone Just thought I should post a progress update on the Cave Pearl Project. We finished off 2014 with a challenging field trip that had so..." | Read more » | over 9 years ago | |||
| stevie | "Why have I not seen this before? this one is Great! " | Read more » | over 9 years ago | |||
| mathew | "I see the frog in those traces.... nice! " | | over 9 years ago |