Rivers, oceans, lakes, aquifers, groundwater, stormwater, urban canals, underground streams, estuaries, and more -- we are passionate about water quality! This page will help you find resources to explore the waterbodies you care about, and connect with other people who have the same interests: ### Questions on Water Quality: [questions:water-quality] **** ## Monitoring * [Water sampling](/water-sampling) * [Water sensors](/water-sensors) * Posts on #water-monitoring * Posts on #water-testing * Posts on #reagents ## Water quality parameters Read about different water quality parameters here, including pH, nitrogen, conductivity, temperature, ORP and turbidity: * https://publiclab.org/common-water-contaminants Also see this overview of 7 ways to monitorn water quality: * https://publiclab.org/notes/anngneal/12-08-2017/7-ways-to-measure-monitor-and-evaluate-water-quality ## Groups and projects working on water quality issues: [wikis:project:water-quality] **** ## Water quality related pages [wikis:parent:water-quality] **** ## Activities [activities:water-quality]...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| liz | "FYI Public Lab, additional informal conversation on this is also happening on the WeChat app -- let us know if you want to join there " | Read more » | almost 9 years ago | |||
| donblair | "To be more specific ... The goal is for the microcontroller (uC) brain (Atmel 328p), and the sensor boards it connects to, to be running at 3.3V. ..." | Read more » | about 9 years ago | |||
| donblair | "Thanks @danbeavers! The PDF you just linked to seems empty -- if you get a chance, could you link to a URL with the part? I have share your feeli..." | Read more » | about 9 years ago | |||
| danbeavers | "The surface mount connector has plastic pins protruding on the bottom to help with mechanical rigidity. SMconnectorF.pdf Click on the box in the..." | Read more » | about 9 years ago | |||
| donblair | "Ah, okay, issue: I can drop the charging chip; but currently the charging chip performs a useful additional function: it allows voltage to be com..." | Read more » | about 9 years ago | |||
| tonyc | "I support the idea of giving up recharging in order to handle more types of batteries. That seems a higher likelihood use case. We could offer the ..." | Read more » | about 9 years ago | |||
| donblair | "Oh, and @warren & @tonyc -- so some notches on the edges of the board, yeah? Will play with the idea ... " | Read more » | about 9 years ago | |||
| donblair | "connector Aj, cool ideas @warren and @tonyc! Also: I just heard back from MacroFab -- they can do through-hole soldering for a little more (per ..." | Read more » | about 9 years ago | |||
| tonyc | "Those recesses look like the ones I was reqeusting for the zip-tie mounting idea. should be simple manufacturing-wise, and if we had recess on fron..." | Read more » | about 9 years ago | |||
| warren | "I wonder if the connector were recessed from the edge of the board, and perhaps wrapped around some kind of supporting shape of the board itself? I..." | Read more » | about 9 years ago | |||
| donblair | "My impression, from what I've heard, read, is that it's a bad idea to use SMT components when there is any regular mechanical stress expected. Cf...." | Read more » | about 9 years ago | |||
| donblair | "I don't know if this part can be placed by a pick-and-place, but if it can, might be worth trying -- the double row SMT pads might make it sufficie..." | Read more » | about 9 years ago | |||
| donblair | "Receptacle side ... http://www.digikey.com/product-detail/en/610114249221/732-6081-2-ND/5047736 Hmm, maybe we can get away with no soldering requi..." | Read more » | about 9 years ago | |||
| donblair | "male side ... http://www.digikey.com/product-detail/en/610114249121/732-6071-2-ND/5047735 " | Read more » | about 9 years ago | |||
| donblair | "oh, interesting ... i don't know how mechanically stable these will be, but: " | Read more » | about 9 years ago | |||
| donblair | "@warren -- wow, that Pocket Operator looks so cool. It makes me wonder if there are AA battery holders like the one they used with the metal clips..." | Read more » | about 9 years ago | |||
| donblair | "Wow, so many good thoughts .... soldering & accessibility It's a good point that it'd be nice for the kit to be useful without requiring any ..." | Read more » | about 9 years ago | |||
| pdhixenbaugh | "Exciting stuff! I'd second the easy AA battery option. I can solder at a basic level, but the less it's required, the less it can go wrong. I don'..." | Read more » | about 9 years ago | |||
| warren | "The Pocket Operator has a great 2x AA battery clip on the back. I know that's not exactly what you're looking for but I just love my PO so much I h..." | Read more » | about 9 years ago | |||
| tonyc | "well, it's all tradeoffs...I'd prefer to have an option to use AAs without a soldering iron, since it's the simplest way to get the thing working o..." | Read more » | about 9 years ago | |||
| donblair | "Note: regarding the RTC wakeup functionality, I posted some thoughts here: https://publiclab.org/notes/donblair/12-02-2015/random-bits-atmel-low-p..." | Read more » | about 9 years ago | |||
| donblair | "Thanks @warren re: Semver -- that looks like just the sort of guidance I was looking for! @tonyc -- I was thinking about this issue ... one of the..." | Read more » | about 9 years ago | |||
| tonyc | "Cool! I super support the easy AA battery option. I have a design for a DIY battery case I can mock up soon, one that will ship flat. I'll watch to..." | Read more » | about 9 years ago | |||
| warren | "For versioning, I'm tending to use Semver. Did you push this announce out to the lists, btw? Great to see it! " | Read more » | about 9 years ago |