211–218 of 218 posts
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Why are pharmaceutical companies allowed to sell medicine that has no improvement over placebo? See phenlyephrine which is in every single OTC decongestant/cold medication
That’s specifically because the DEA and congress cracked down on the useful alternative.
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There is zero way your body is losing a quarter pound at night through either process in a room at 70 degrees
Veritasium did a video on this. He lost around 250g each night, which is over half a pound. Some of that lost weight was CO2, some of it was water vapor and some of it was sweat. https://www.youtube.com/watch?v=lL2e0rWvjKI
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There is zero way your body is losing a quarter pound at night through either process in a room at 70 degrees
Veritasium did a video on this. He lost around 250g each night, which is over half a pound. Some of that lost weight was CO2, some of it was water vapor and some of it was sweat. https://www.youtube.com/watch?v=lL2e0rWvjKI
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Eufy smart scale P2 Pro. $79.99 It has wifi and bluetooth, so it always syncs up with your phone and can track multiple people. I don't really trust the body measurement stuff but use it for measurement per measurement information. The heart rate is kind of nice to track too.
Even cheaper, and IMO slightly more reputable, the $50 withings scale is pretty great, and it's half the price of the version with useless body composition measurements.
0. https://www.theverge.com/23573362/anker-eufy-security-camera...
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This has been analysed extensively on our forum and the root cause was a bug in the software serial Arduino library as well as a slightly wrong command send from our library. Details [1] [1] https://forum.airgradient.com/t/co2-reading-of-3-constantly/...
Arduino library eh? Would definitely recommend getting away from that as soon as possible. When I worked with avr controllers we eventually ended up writing all of our own library code because it was still faster than trying to debug these strange heisenbugs caused by gnarly bugs in the libraries. I specifically remember softserial was very problematic, and actually reading the code convinced me to dump it. Might be…
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If it's measuring VOCs and you live in a city then chances are it would be measuring car exhaust!
Is that bad? I mean, VOC's are VOC's regardless of source, no?
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I attached a cheap IKEA Vindriktning PM2.5 sensor to esphome to get air cleanliness data into Home Assistant [1]. That's also very simple to do - solder some wires and write a few lines of yaml and it shows up in the web UI. I bought two of them and they are accurate to each other, so the sensors appear to be acceptable. [1] https://plett.uk/posts/ikea-air-sensor/
Do you know if the new ikea air quality sensor has the same fan as the first one? The original had a fan that would turn on and off every ten seconds.
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I have looked for this myself, and come to the conclusion that it doesn't exist unless you're willing to buy a second hand, bulky hospital scale. Measuring human weight is harder than it seems (we don't stay still). Most scales use a strain gauge sensor that detects bending of a metal arm through changes in resistance. It's pretty noisy and needs averaging. There's some integrated circuits to relate the resistance to…
Even without endorsing, could you at least tell us the model?