Viewing profile — stackmad
stackmad
HN member- Joined
- Wed, Aug 22, 2018, 12:11 PM UTC
- HN karma
- 96
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- 29 items
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About stackmad
Recent public activity
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Comment #20053866
Author of boden here: We have since moved away from a self written smart pointer and replaced as much as possible with standard C++ classes ( shared_ptr, weak_ptr, std::string etc.…
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Comment #19035016
Actually its 9 plants ;)
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Comment #19000699
Yeah, you have to use IOKit, which hidapi wraps.
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Comment #18998975
:) But the CO2 measurement part honestly came first.
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Comment #18998967
Sure, but I wanted to see the data over time. And I was bored :)
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Comment #18997971
Yeah, its quite ok.
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Comment #18997821
Totally true, but my soldering iron is in the basement, so ... ;)
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Comment #18997782
Yes, absolutely. I only have one device at the moment, but it sure would be interesting to see how fast the levels equalize between rooms
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Comment #18997773
Yes, I agree. But this was way more fun :)
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Comment #18997771
I guess it should match the outside air as close as possible. So around 400ppm
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Comment #18997688
Its not that I'm afraid to die here :) Its more about improving the quality of the air. And the body is pretty bad at recognizing higher than norm CO2 level unless it gets to life …
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Comment #18997636
Though with your steps it at least starts, but the webserver fails, and CTRL+C doesn't work ^^ * Serving Flask app "co2meter.server" (lazy loading) * Environment: production WARNIN…
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Comment #18997622
That looks great as well! But for some reason the library they use (pyhidapi) would always crash on my Mac.
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Comment #18997601
I saw some study that suggests that higher CO2 levels decrease cognitive abilities. You wont die, but I do tend to get headaches when the air gets worse.
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Comment #18997556
It definitely shows that this is one of the cheapest meters on the market. But the values seem to be realistic, when having all windows open it shows 450-460 ppm which is at least …
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Comment #18997540
Yeah, I've finally managed to tweak the thermostat on the radiators and the main thermostat for the heater to where I like it :)
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Comment #18997535
Yeah, that was pretty quickly hacked together :)
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Comment #18997529
The device on its onscreen display shows the same steps, so I think its due to how the sensor works.
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Comment #18997521
Depends, this was a question I tried to answer for myself with this project. I did not easily find a good library for Python that would work on my Mac for reading the HID messages,…
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Comment #18997509
Yes, I agree. I've already ordered a bunch of plants :) Sadly my building is quite old and ventilation is poor.
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Comment #18997501
That looks good as well! I actually didn't know about that project. It wouldn't have worked on my specific case though since I wanted it connected to my Mac, that tool only works o…
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Comment #18997492
You can only put link + title on here. And the story is rather boring :) I wanted to measure it, I got a device from amazon, found a python script to read the data, the dependencie…
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