| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| danbeavers | "By the tube, I assume you mean the manometer. The most accurate way to accomplish this would be to make a scale that is calibrated to your setup a..." | Read more » | over 6 years ago | |||
| stevie | "great PDF write up. say someone was to mount the tube on the wall where the water changes. What might a scale look like for it that could be posted..." | Read more » | over 6 years ago | |||
| danbeavers | "In electrical terms this is analogous to measuring the voltage across a resistor to determine current where the pressure is voltage and the needle ..." | Read more » | over 6 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 | |||
| 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 | |||
| 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 |