**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 | ||
|---|---|---|---|---|---|
| xose | "@xose awards a barnstar to pdhixenbaugh for their awesome contribution! " | Read more » | over 5 years ago | |||
| xose | "Translating instructions to spanish in 3, 2, 1... " | Read more » | over 5 years ago | |||
| adiizo-la | "If you like this configuration we can always update the Fritzing diagram. [Gclub มือถือ] https://gclub-mobile.snbbet.com/ [ทางเข้า Gclub] https:/..." | Read more » | over 5 years ago | |||
| 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 | |||
| roberts_ecofarm | "So, after reviewing my drawings I discovered I'd made a huge mistake on the cell constant (K) in the two post probe design. The cell I designed wo..." | 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 | "So, on paper these designs look like they will work. Next step will be to build one and see what happens when design meets the real world. Hoping..." | Read more » | over 5 years ago | |||
| roberts_ecofarm | "Clarifying - 1. Ideally Id like to upload daily. For some sites I will be able to connect to the web either through wifi or through cell service. ..." | Read more » | over 5 years ago | |||
| MadTinker | "A couple of clarifying questions: do you have a time period in mind for sampling before data collection/processing? do you have any form limitati..." | Read more » | over 5 years ago | |||
| stevie | "Oh great project! Pinging in a couple people who might be interested: @cfastie @pdhixenbaugh @donblair @rebeccah @bhickman @JSummers Anyone have i..." | 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 | |||
| Bronwen | "Hi! The simplest (and cheapest) conductivity sensor I can think of is the Coqui-- we have a recent blog post about it here, and I would imagine wit..." | Read more » | over 5 years ago | |||
| warren | "Welcome! Very cool! " | Read more » | over 5 years ago |