KnowFlow is designed for environmental activists who wants to monitor water quality and get real time data. Now it can monitor 5 parameters: **Temperature, pH, ORP, Electronic conductivities, Dissolved Oxygen**. It is based on Arduino, easy to change and add more sensors and modules. Currently it stores the data on a micro SD card, also the data can be read on phone by bluetooth (except for Dissolved Oxygen). Most of the sensor used are from [DFRobot](https://www.dfrobot.com) and [Atlas Scientific](https://www.atlas-scientific.com), which are the main 2 sensor suppliers for Arduino users. ## Questions Questions can be either frequently asked questions, or "next step" challenges we're looking to solve. [questions:knowflow] ## Activities Activities show how to use this project, step by step. [activities:knowflow] ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| MadTinker | "@shantler @rockets et al... FWIW - I ordered the (majority) of the parts needed for a KnowFlow related system (sans the DO sensor and the enclosure..." | Read more » | almost 7 years ago | |||
| MadTinker | "@gretchengehrke Thanks! That's kinda what I thought, but wasn't sure. I'll likely end up with both since the professional measurement suite has his..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Hi @MadTinker, oxidation-reduction potential (ORP) and power of hydrogen (pH) measure different chemical properties: ORP provides information about..." | Read more » | almost 7 years ago | |||
| liz | "Hi @xose , @shantler did create a method page, and this now appears there as an activity! Check it out: https://publiclab.org/wiki/knowflow " | Read more » | almost 7 years ago | |||
| MadTinker | "@rockets Thanks for the summary. I thought I was going to have to move in a different direction, but this clears things up. Cheers. " | Read more » | almost 7 years ago | |||
| ramarro | "@shanlter i havent wrote anything about my project its just an hobbies for my aquarium :) @rockets I am using my project to control my reef aquar..." | Read more » | almost 7 years ago | |||
| rockets | " DFR0504_Analog_Isolation_Module-V1.0-_Schematic.pdf here is the schematic of the isolator. " | Read more » | almost 7 years ago | |||
| shanlter | "Thanks @rockets! I hope this could help answering your questions, @ramarro. btw, The GUI of your controller looks so nice! Where can I learn more a..." | Read more » | almost 7 years ago | |||
| rockets | "I just try translate youyou's answer into english. Q:The parts for the KnowFlow-esque are going to be ordered from DFRobot and was wondering if yo..." | Read more » | almost 7 years ago | |||
| ramarro | "@shanlter i think that DFR EC will be better than what i use, at least after a brief look to the circuit. i will order one, and try it as well, if ..." | Read more » | almost 7 years ago | |||
| shanlter | "Yes, you got it :) @MadTinker If you want to use DFRobot's EC sensor, you'd better test your sample with a TDS pen first (which only costs several ..." | Read more » | almost 7 years ago | |||
| shanlter | "@ramarro, you tried so many stuff! Thanks for the info on EC, I am learning it. Lots of the questions you mentioned I don't know the answer, I aske..." | Read more » | almost 7 years ago | |||
| MadTinker | "@shanlter @ramarro Dang, got lost in the comments .... my bad. " | Read more » | almost 7 years ago | |||
| ramarro | "@MadTinker, @shanlter use DFRobot EC probe. I am using EC_mini_v31 we are two different person :) using 2 different devices for a similar project..." | Read more » | almost 7 years ago | |||
| MadTinker | "@shanlter A little confused about what you used for EC. The KnowFlow spec sheets indicates a DFRobot EC sensor, but in the above you indicate som..." | Read more » | almost 7 years ago | |||
| ramarro | "i forget to add some details :) even if you use 2 arduino, at least in my scenario, and u want them communicate in some way, you have to use a com..." | Read more » | almost 7 years ago | |||
| ramarro | "@shanlter using 2 arduino (or 20) doesn't change anything, unless you use galvanically isulated ac/dc converter. if you power them from the same s..." | Read more » | almost 7 years ago | |||
| shanlter | "@ramarro totally agree! When I first use their sensors, I also have the same problem. I asked them and was told to use several Arduino boards for e..." | Read more » | almost 7 years ago | |||
| ramarro | "@shanlter did you have the opportunities to talk with dfrobot team? i have purchased a ph shield from them, and after some experiment i noticed th..." | Read more » | almost 7 years ago | |||
| shanlter | "@MadTinker, according to my knowledge, the reason why to use "isolation" is to avoid interrupting between sensors. Both OPR and EC need isolation. ..." | Read more » | almost 7 years ago | |||
| shanlter | "Hi @MadTinker, thanks for your question! I just saw your questions around dataloggers for pH! I think DFRobots' isolation module is not online yet ..." | Read more » | almost 7 years ago | |||
| MadTinker | "This is great! I'm starting an effort that will involve the parallel build of a simple in situ data logger (e.g. Riffle or maybe Cave Pearl) and a ..." | Read more » | almost 7 years ago | |||
| warren | "@xose - awesome. And even "having some troubles" is ok to post -- if we break out the issues perhaps there are folks who can chime in with solution..." | Read more » | almost 7 years ago | |||
| xose | "Wooow!! Great @warren! I'm having some troubles with the orange pi by now. This week we'll lift up a raspberry 2 with both a drone and a ballon. Le..." | Read more » | almost 7 years ago |