11–20 of 322 posts
No conclusion? What's the point of doing research or reporting it if you learned nothing? Is this a koan?
It quickly confirmed that, without turning my thermostat fan to "ON", my bedroom CO2 jumps from about 1000 ppm to 2000 ppm within a couple hours of us going to sleep.
In the fall, my wife and I started waking up in the middle of the night feeling like we couldn't breathe. What I figured out is that the neither the heat nor cooling was running because the weather was pretty much perfect. We have to keep the door closed because our cat will swat at us in the middle of the night otherwise. I figured there would naturally be enough of a draft to not make this a concern and it's a fairly large connected master bedroom/bathroom with high ceilings to hold a lot of air, but I guess that isn't enough. So that's when I learned about the "fan" function on my thermostat.... never had a need for it in my life.
Now I just need to figure out how to get lower than 1000 ppm, which is already a hit against cognitive function. Our house has no screens currently and even if we install some, it's not like I want to have windows open in the middle of winter. I've heard house plants don't have a huge effect, but I'm willing to try.
I really wish I'd read these comments and realised the experiment isn't finished before scrolling up and down the article for five minutes trying to find the conclusion.
Gwern.net has useful heading information on each page. This particular one says:
> modified: 13 Dec 2018; status: in progress;
Presumably the status tag will be modified to "draft" or "finished" once conclusions are available. https://www.gwern.net/About#confidence-tags
No conclusion? What's the point of doing research or reporting it if you learned nothing? Is this a koan?
No conclusion? What's the point of doing research or reporting it if you learned nothing? Is this a koan?
Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very precise and accurate components
I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
[1]: https://www.netatmo.com/en-gb/helpcenter/air-care/4/installa...
I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
I got an NDIR CO2 sensor on AliExpress for $20. Do you think one of those would just have low accuracy or be uncalibrated?
I'm eager to hear the results. I recently got an Awair 2.0 after seeing this talk by DHH: https://www.youtube.com/watch?v=MRqh8oLY7Ik It quickly confirmed that, without turning my thermostat fan to "ON", my bedroom CO2 jumps from about 1000 ppm to 2000 ppm within a couple hours of us going to sleep. In the fall, my wife and I started waking up in the middle of the night feeling like we couldn't breathe. What I figure…