| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I have not worked with water chemistry sensors, but your first impression might be a good one -- a device that can send encoded concentrations of N..." | Read more » | about 7 years ago | |||
| NCartmell | "I've built one of your fine Coqui circuits. It works very well with the LDR (photo resistor). Is there a recommended distance between the metal pro..." | Read more » | about 7 years ago | |||
| NCartmell | "I can help with probe material: Regarding Stainless Steel, general purpose grade is 304 and marine grade is 316. Stainless steel, particularly 304 ..." | Read more » | about 7 years ago | |||
| gargoyle_169 | "I have ben conducted a literaturere view of this subject when I encountered this source article, in which I am now responding. The two listed below..." | Read more » | about 8 years ago | |||
| liz | "Here's a report back (including video!) from a workshop led by John Keefe in August 2015 http://johnkeefe.net/make-every-week-audible-water-sensor " | Read more » | about 8 years ago | |||
| mathew | "Cool! I ordered some of those PEX connectors to try out! We've been discussing a variety of connectors. check out these recent developments: http..." | Read more » | about 8 years ago | |||
| EdMallon | "Just a quick suggestion: I've been using pex swivel adapters in my underwater connectors: http://www.menards.com/main/plumbing/rough-plumbing/pip..." | Read more » | about 8 years ago | |||
| mathew | "I wish I had brands to list, but yes, we've seen commercial probes using small (0-80) screws as their probes. " | Read more » | about 8 years ago | |||
| pdhixenbaugh | "What will be the long term corrosive effects of current and salt water on our stainless steel screws? I think we've seen stainless steel probes on ..." | Read more » | about 8 years ago | |||
| liz | "@taramei check this out for your venus flytrap work in brackish water!!!!! " | Read more » | about 8 years ago | |||
| pdhixenbaugh | "Other people have commented elsewhere how "trimmers" (capacitors with adjustable capacitance) exist, which would be a useful way to "tune" the soun..." | Read more » | about 8 years ago | |||
| liz | "Since the two main ways to control the sound are the saltiness of the water and the size of the capacitor, it would be cool if this list of parts i..." | Read more » | over 8 years ago | |||
| warren | "large yogurt container Love this idea for standardization; used yogurt containers pile up quickly in my house. Or a mason jar! I'd guess material ..." | Read more » | over 8 years ago | |||
| donblair | "Hah, just saw that @mathew posted a link I was reading this morning, but forgot to include: http://www.electroschematics.com/6923/555-low-voltage-..." | Read more » | over 8 years ago | |||
| DavidMack | "@gpenzo the 2 ft. of chain would serve as the counter weight, then the chain would connect to a rope which is connected to an anchor. the foam dis..." | Read more » | over 8 years ago | |||
| gpenzo | "I presume you will use a chain to connect this to a weight. Does this design have enough buoyancy to carry the chain wieght? The PVC design looks g..." | Read more » | over 8 years ago | |||
| mathew | "the #3 stopper just barely fits under a bottle cap. I'd mentioned trying vulcanized rubber stoppers and that they were too hard-- the problem was p..." | Read more » | over 8 years ago | |||
| cfastie | "The configuration with the stopper held in firmly with the threaded bottle cap looks really good. How hard is it to get that to work, i.e., to get ..." | Read more » | over 8 years ago | |||
| mathew | "@DavidMack a silicone stopper would be great! they're better in cold temperatures than natural rubber. It also seems like it would bond better with..." | Read more » | over 8 years ago | |||
| cfastie | "This looks like a surefire way to waterproof the wires. But now you have to waterproof the seal between the stopper and the bottle. Plastic water b..." | Read more » | over 8 years ago | |||
| DavidMack | "what if you got a solid silicone stopper and put two small needle sized holes in it (carefully) and ran each round wire through its own hole. you'..." | Read more » | over 8 years ago | |||
| mathew | "this is interesting! I hadn't thought to just use the stopper directly filled with silicone. " | Read more » | over 8 years ago | |||
| warren | "Hi, Amy! I think @donblair is busy deploying Riffles in Colombia, but @wmacfarl made an Upverter version of the circuit that's quite compact -- her..." | Read more » | over 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 |