| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| lord_of_all_sebastian | "Haha yeah it was very surprising. Before I opened it I figured it was just a little dust. " | Read more » | over 4 years ago | |||
| liz | "haha! Were you surprised??? " | Read more » | over 4 years ago | |||
| lord_of_all_sebastian | "I had the same exact problem with my PMS 7003 sensor! I was getting suspiciously high particulate matter readings on a very clear day. I found this..." | Read more » | over 4 years ago | |||
| crispinpierce | " Hi Stevie, Thanks so much for carrying out these tests. The results seem logical given the particle sizes of the solids you tested (e.g., sugar cr..." | Read more » | almost 5 years ago | |||
| warren | " I'd love to combine this with a microscope activity to look at each of the powders for scale! " | Read more » | almost 5 years ago | |||
| stevie | " Not too long. Maybe 3-5 seconds " | Read more » | almost 5 years ago | |||
| warren | "@warren awards a barnstar to stevie for their awesome contribution! " | Read more » | almost 5 years ago | |||
| warren | "Wow, this is a really great activity! And great video!!! Did the cocoa take a while to clear out and return to green? " | Read more » | almost 5 years ago | |||
| kkoerner | " Sure thing, I'll see if I can get something written up within the next week. " | Read more » | about 5 years ago | |||
| liz | " Hi @kkoerner, you wrote above that "Taking apart a PurpleAir and swapping out sensors is relatively easy, if there's a desire for a similar guide ..." | Read more » | about 5 years ago | |||
| MadTinker | " @warren You know it's pretty sad when I don't catch things like this myself :smiley: I was referring to the raw data. " | Read more » | about 5 years ago | |||
| warren | "Hi, MadTinker, thanks for the info here. I was just wondering if you meant that the Coqui itself was noisy, or if you're referring to noise in the..." | Read more » | about 5 years ago | |||
| MadTinker | "I've successfully used the DFRobot TDS/conductivity sensor combined with the a Mini-Pearl system. The Coqui was much too noisy. My Arduino setup wa..." | Read more » | about 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 | |||
| 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 | |||
| 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 | |||
| roberts_ecofarm | "Thanks Chris, We have multiple injection well sites in our county, and more in the works, so we are planning on covering a large area. We will be..." | Read more » | over 5 years ago | |||
| cfastie | "You are right that there has not been much follow-through at Public Lab on developing and testing DIY conductivity or total dissolved solids (TDS) ..." | Read more » | over 5 years ago | |||
| warren | "Love this! " | Read more » | over 5 years ago | |||
| nshapiro | "This is great, Karl! So many people are using the PMS 5003 these days and probably wondering how to do this. I'm looking forward to circulating th..." | Read more » | over 5 years ago | |||
| zengirl2 | "@kkoerner so cool to see this post as well as the guts of the air sensor. Looking forward to the update on the results. " | Read more » | over 5 years ago | |||
| liz | "Hi @Karik, do you have a link to LabVIEW? " | Read more » | over 5 years ago | |||
| WaterGeek | "Thank you! @liz " | Read more » | about 6 years ago | |||
| liz | "Hi @WaterGeek, great to hear from the https://www.mytapwater.org/ project! There are many various water testing projects happening around here, but..." | Read more » | about 6 years ago |