I'm sure it's just a coincidence, but Amazon just bumped the price of that sensor up by almost $40. Perhaps that is a proxy for how popular this article is and how quickly Amazon notices the trend.
Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
31–38 of 38 posts
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#32i am looking for something similar but for particulate matter instead of co2 like PM2.5. I am also looking for a solution that would work mobile, eg. on a bike. Any help greatly appreciated!
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#33Well $80 dollar is affordable but certainly isn't low cost to me. Why are all Co2 Monitor cost so much?
And on the subject, do we have O2 level monitor as well?
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#34Earlier quoted context omitted.
Elevated CO2 levels have a noticeable impact on human cognitive ability. Indoor environments obviously have higher CO2 levels vs outdoor, but certain offices may have worse than typical indoor levels due to poor ventilation. https://thinkprogress.org/exclusive-elevated-co2-levels-dire...
Interesting, I had no idea. Do you think it's worth getting a CO2 monitor for a home office? I don't usually have the windows open since it's cold out. Is one person enough to elevate a small 10x10 office to cognitive impairing levels?
It’s a small investment and probably worth it if you already suspect bad ventilation. Within seconds of plugging a CO2 monitor into my bedroom outlet, the monitor was registering 1200ppm — and that was without any humans in it prior.
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#35i am looking for something similar but for particulate matter instead of co2 like PM2.5. I am also looking for a solution that would work mobile, eg. on a bike. Any help greatly appreciated!
There is a project in Germany which monitors particulate matter. They provide a guide how to build a sensor using a SDS011 and a ESP8266: http://luftdaten.info/en/construction-manual/
Not sure if/how this would work mobile, though.
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#36Do the huge corresponding drops in CO2 and temperature at 11pm and 9am mean that the "solution" was to open a window or door for ~15 minutes a couple times a day?
Seems like a simple solution, other than there's a good half-hour of sub-17 degree temperatures right at the start of the workday, which isn't exactly a great motivator to start working. Unless you are skilled at typing with winter gloves on, I guess.
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#37What do you guys think about ozone? I know its banned in California from what I've heard. But I hear it kills a lot of bad compounds like mold. I could be wrong though, would love to hear you guys opinion on it.
Re: Show HN: Low cost CO₂ monitoring (your office) with Prometheus and Go
#38If you're interested in a hardware solution, I've used the MH-Z19 CO2 sensor to great results. It's an NDIR (read:not electrochemical) sensor with a UART interface and temperature compensation. It will report up to 5000ppm and comes factory calibrated. It's also $20 in singles from China. Coupled with whatever microcontroller you want, it's totally possible to have a distributed net of CO2 sensors for a low cost per…
Is there any significant difference between MH-Z19 and MH-Z19B?