Hello. I recently purchased a pack of RuuviTags, since based on the marketing they seemed ideal for my use cases. I’d like to use one to measure the temperature of a Sauna and another one to measure the temperature of a Palju (a hot tub).
I tried it and both seemed to work, with a couple of caveats that may make these tags not worth using after all.
First the palju sensor; I placed it inside a ziploc bag for some extra moisture protection, though I suppose this doesn’t help much with condensation. Based on reading the forums I kept the tag in for just a few hours. I think this might not be the best solution - connecting an external waterproof temperature probe could work better. I have zero electronics/soldering experience though, so this might prove difficult. Furthermore, keeping the tag resistant to the elements (e.g. it would still be outside while not floating in water) while having a wire coming out of the case seems impossible. Any ideas?
And second: my primary goal - the sauna sensor - proved to be pretty much useless. The idea is to get an alert when the room reaches a specific temperature, but since the sensor is inside the case and the air inside doesn’t seem to conduct heat very well, there’s a significant delay in getting the sensor to match the actual room temperature. So much so that the sauna is about 30-40 degrees hotter than the reading, which isn’t great. Using the tag without the case would probably help, but I doubt the tag would last very long. Is this problem solvable?