**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 | ||
|---|---|---|---|---|---|
| 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 » | about 5 years ago | |||
| warren | " @warren has marked @asnow as a co-author. " | Read more » | about 5 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 » | about 5 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 » | about 5 years ago | |||
| EdMallon | "Dr. Beddow's instrumentation students have been building our EDU logger for more than three years and, based on that experience, we've redesigned t..." | Read more » | about 5 years ago | |||
| warren | "Hi @sushills - i reposted your design to Upverter (with attribution and license ref), and took a few pics: https://upverter.com/jywarren/523e0539..." | Read more » | over 5 years ago | |||
| warren | "So just finally circling back here; I'm happy to post step-by-step photos and to put notes on all existing Coqui docs if we are pretty much OK with..." | Read more » | over 5 years ago | |||
| DoraWest | "Pleasant post. I was checking continually this online journal and I am awed! To a great degree supportive data extraordinarily the last part I admi..." | Read more » | over 5 years ago | |||
| warren | " Hi, Ed; thanks for reporting this; we'll take a look ASAP. I've opened an issue for you here if you'd like to provide any other information (for e..." | Read more » | over 5 years ago | |||
| EdMallon | "For some months now I've been unable to upload images to comment posts in this research note. I've tried multiple different browsers. Though the im..." | Read more » | over 5 years ago | |||
| roberts_ecofarm | " @EdMallon Glad to see more video links. The basic logger build videos you did were great. Really helped me. Thanks for continuing to share. " | Read more » | over 5 years ago | |||
| warren | " I think it's possible, yeah! I'm not sure how fast PWM is or how easily you can set the rate? " | Read more » | over 5 years ago | |||
| EdMallon | "I finally completed the set of logger build tutorials on Youtube, to go with the screw terminal logger posted in 2017: Pro Mini Logger Build: Bat..." | Read more » | over 5 years ago | |||
| warren | " " | Read more » | over 5 years ago | |||
| warren | "I tried doing a layout as @akshaya has done on a bigger board (https://publiclab.org/notes/ashkaya/09-17-2016/build-a-coqui-a-simple-water-conducti..." | Read more » | over 5 years ago | |||
| zengirl2 | "@warren I'm with @Liz that it looks cute. Also, on a Fritzing diagram I think this will be clear enough. It is actually easier to find the hole for..." | Read more » | over 5 years ago | |||
| roberts_ecofarm | "I think that crossing the wires over the top makes it harder to see which pins are connected. It does save space, but as a teaching aid I think it..." | Read more » | over 5 years ago | |||
| warren | "Nope, just thought it might be confusing in a diagram, but it saves space. On Tue, Nov 27, 2018, 4:51 PM \<notifications@publiclab.org wrote: ..." | Read more » | over 5 years ago | |||
| liz | "I personally think it's cute to have the wires do a criss-cross over the 555-timer, and it kind of keeps them out of the way....does it mess up the..." | Read more » | over 5 years ago | |||
| warren | "Like this... Sorry, now running out of light! " | Read more » | over 5 years ago | |||
| warren | "I could also have those wires go over the chip, would that be confusing? " | Read more » | over 5 years ago | |||
| warren | "Amazing! I've been trying to further simplify the wires-as-diagram version to make adding a resistor easier and also just have fewer weird routing..." | Read more » | over 5 years ago | |||
| xose | "SPANISH INSTRUCTIONS -1) Antes de empezar familiarizate con los elementos. Recuerda realizar un paso de cada vez y ayudar a otros grupos antes de ..." | Read more » | over 5 years ago | |||
| xose | "@xose awards a barnstar to pdhixenbaugh for their awesome contribution! " | Read more » | over 5 years ago |