| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| jqk81 | "The reef balls is amazing! Hope I can photograph บาคาร่าออนไลน์ it. " | Read more » | over 5 years ago | |||
| adiizo-la | "Oh, it's amazing. It may be home to sea creatures. gclub slot " | Read more » | over 5 years ago | |||
| liz | "Hi @Karik, do you have a link to LabVIEW? " | Read more » | over 5 years ago | |||
| danbeavers | "Go here to see the results from experimentation. " | Read more » | over 6 years ago | |||
| danbeavers | "The screw valve should BE a needle valve. I suggest a needle valve so that there is a large range of flow control. Most other valves are mainly o..." | Read more » | almost 8 years ago | |||
| eustatic | "huh. i think i can make this out of the air filter parts? how essential is the 'needle valve' versus the screw valve that comes with the aquarium..." | Read more » | almost 8 years ago | |||
| cfastie | "For $25 that hydro generator has got to be a good thing. It is an impartial solution for my spring house because it can't freeze (operating range 4..." | Read more » | about 8 years ago | |||
| donblair | "Oh, exciting ... it'd be fun to demonstrate anything powered by moving water. Maybe this thingy should be ordered immediately. A visit ASAP sound..." | Read more » | about 8 years ago | |||
| cfastie | "That hydro generator says it needs 3 liters per minute, which we have. Sorry about revealing your irrelevance. Also, we wouldn't need the internet..." | Read more » | about 8 years ago | |||
| donblair | "Exactly. Was confusing for me, too, as I'd been nursing a rather fixed mental picture of a parallel plate capacitor with a dielectric slab sandwic..." | Read more » | about 8 years ago | |||
| cfastie | "Why does this work when the two wires (the extension cord) are insulated? It must be that the electric field extends outside the wires into the wat..." | Read more » | about 8 years ago | |||
| donblair | "This sounds like it might prompt a PVOS research trip up to Bernie Country ... I need to write up a research note, but here's the basic idea (cour..." | Read more » | about 8 years ago | |||
| cfastie | "Don have you described somewhere how in the world this thing measures water depth? I need this and I discovered today that my spring house up in th..." | Read more » | about 8 years ago | |||
| donblair | "Hi @gretchengehrke :) I'd never really testing it very thoroughly, and I haven't done sufficient background research to know if the 555 approach I..." | Read more » | about 8 years ago | |||
| gretchengehrke | "Hey Don -- How well does the depth feature work? @stevie and I were just talking about it, and are needing a reminder. :) " | Read more » | about 8 years ago | |||
| danbeavers | "http://www.seeedstudio.com/recipe/241-automatic-water-level-controller.html?utm_source=EDM&utm_medium=EDM&utm_campaign=EDM20150531 is anoth..." | Read more » | almost 9 years ago | |||
| donblair | "And a great study of capacitive depth measurements is here: http://www.umbc.edu/cuere/BaltimoreWTB/pdf/TM_2009_003.pdf " | Read more » | over 9 years ago | |||
| laurenrae | "Yeah, this is related to the "Riffling on the Riffle note." The Arduino recorded the wave for us. We just need to figure out a formula to covert ..." | Read more » | over 9 years ago | |||
| mathew | "this is based on this probe listed in scott's note, right? http://njhurst.com/electronics/watersensor/ clever design. I'm really into running the ..." | Read more » | over 9 years ago | |||
| mathew | "thanks for putting in a good note on bioindicators! I love benthic macroinvertebrates-- I think its the most clever way to monitor water quality. " | Read more » | over 9 years ago | |||
| mathew | "Continuing to use the same oscillator circuit for depth and conductivity is super awesome! I support whole heartedly. In the 555, pulse time in st..." | Read more » | over 9 years ago | |||
| danbeavers | "That is really an interesting idea to measure water height with capacitance and a 555! " | Read more » | over 9 years ago |