| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I keep my eye out for old Nalgene bottles which are tough enough to survive rough handling and hydraulic pressure. The lids are also strong so they..." | Read more » | almost 6 years ago | |||
| warren | "I think this page may have some on moisture sensing! https://publiclab.org/notes/mathew/02-26-2015/sensors-in-soda-bottles " | Read more » | almost 6 years ago | |||
| warren | "Hm, i can't seem to find it. i think it may have been buried in a comment thread somewhere! " | Read more » | almost 6 years ago | |||
| pdhixenbaugh | "@warren great suggestion! It rains a lot here so I'm somewhat worried about that too. Where can I find that conversation? Are there any inexpensive..." | Read more » | almost 6 years ago | |||
| warren | "There's also been some discussion of leaving the device in an upside-down bottle outside the water, say with the bottle taped to a long stake, and ..." | Read more » | almost 6 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 | |||
| 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 | |||
| Nashblackcat | "@Mathew Mat: It is great for insulation! ASAS has it cheap so you can try it out and not break the bank. http://www.sciplus.com/p/SUPERGLUE-RED-..." | Read more » | about 9 years ago | |||
| mathew | "@cfastie I guess I can't guarantee they didn't leak a bit, but in my experience the rice sticks to the side of the bottle if there is moisture. I'..." | Read more » | about 9 years ago | |||
| Nashblackcat | "Not sure if this would be an option but Self-fusing Silicone Tape works very well for sealing even in wet and underwater conditions. " | Read more » | about 9 years ago | |||
| cfastie | "That's a great idea to use rice to make the bottle non-compressible. It can also keep your payload dry if a little water leaks in. For the testing ..." | Read more » | about 9 years ago | |||
| mathew | "i've tried heat shrink tubing in other projects-- I don't find that it provides a perfect seal and it has difficulty sticking to glues since its us..." | Read more » | about 9 years ago | |||
| amysoyka | "Have you tried using heat shrink wrap yet as a sealant? Electrical tape also works as shrink wrap - just apply some stream/heat to it and it tight..." | Read more » | about 9 years ago |