6 ms·
Author here. I forgot to mention: With a Wemos D1 mini (ESP8266) MCU that costs around USD 2.00, you can pretty easily make the Vindriktning WiFi connected and
by ahaucnx 5y ago
Author here. I forgot to mention:
With a Wemos D1 mini (ESP8266) MCU that costs around USD 2.00, you can pretty easily make the Vindriktning WiFi connected and get the data to a backend [1].
You just need to solder three wires, and there is enough space within the enclosure to fit the D1 mini inside.
This would then allow you to get the exact measurements and to better understand if the "green" is more on the lower end or the higher side.
[1] https://github.com/Hypfer/esp8266-vindriktning-particle-sensor https://github.com/Hypfer/esp8266-vindriktning-particle-sens...
- jb1991 5y agoIt would be great to hear some alternative suggestions for a consumer air quality meter that is accurate, reliable. I.e. are the AirThings products good? Or do you have any other recommendations?
- samsolomon 5y agoI purchased two Airthings View Plus monitors about a month ago. We had a subslab depressurization system installed to mitigate Radon in the basement. The company offered continuous monitoring for $300/yr. Instead I decided to purchase monitors and keep an eye on it myself. It's hard to know how good the products will be long-term, but the app and charting is pretty good. You can download reports via their web dashboard. I've turned off all notifications except for the CO2 monitor. The ePaper screen is legible, but the text is a little rough around the edges. Here's what it tracks: - Radon - PM 2.5 - VOC - CO2 - Humidity - Temperature - Pressure I will say that the View Plus is Airthings most expensive product. If you don't care about PM 2.5 or Radon monitoring, they have significantly cheaper options.
- 404mm 5y agoHi, thanks for the article! Are there any non expensive sensors you could recommend? I care about the indoor air quality but it gets very pricey. I have Awair at home but it covers only one room and the unit runs $300 a piece :(
- ahaucnx 5y agoI am not aware of a good and low-cost wifi connected sensor but as I mentioned it is relatively easy to build one yourself. If you don't want to buld yourself, there are a few relatively good non-connected PM 2.5 sensors for example the "SmartMi PM2.5 Air Quality Monitor" that I can recommend. It costs around USD 30 here in Asia.
- ruffrey 5y agoI’ve used this one [1] then ordered similar ones from Ali express after getting the Adafruit one working. 1. https://www.adafruit.com/product/3686?gclid=CjwKCAiAhreNBhAYEiwAFGGKPCbnSc7S_o-NHHVYP1RGUcrdKj-7pB6y6rVpt1VYwujHfXoB-e2aGhoCuTIQAvD_BwE https://www.adafruit.com/product/3686?gclid=CjwKCAiAhreNBhAY...
- stavros 5y agoI can second this one, I soldered four wires to connect it to an ESP8266 and flashed ESPhome and that was it, it's worked fine for months.
- bobiny 5y agoI like my Netatmo. I see that it costs $200 on Amazon for main module + you can connect 3 additional ones for other rooms — they cost $86 each. It shows CO2 (notifies when it's high on smartphone), temperature, relative humidity and noise level.
- deleted 5y ago[deleted]
- ortusdux 5y agoI've been looking at ordering a variety of environmental sensors from Seeed Studio's Grove line. They look approachable and affordable, but I cannot vouch for their quality. https://www.seeedstudio.com/Grove-Laser-PM2-5-Sensor-HM3301.html https://www.seeedstudio.com/Grove-Laser-PM2-5-Sensor-HM3301....
- gonehome 5y ago
- namdnay 5y agoNice article! One small typo: > It can be seen that all three sensors correlate very well but that the Vindriktning only shows about 65% of the PM2.5 values of the other two sensors and thus seems to considerably understate the air quality. I think here you mean "overstate the air quality" right? Or "understate the air pollution"
- pingec 5y agoAre there any air quality devices that work well outdoors in all kind of weather?
- deleted 5y ago[deleted]
- zibzab 5y agoAre you recording sensors output? If the sensors have been calibrated in software, wouldn't you get the uncalibrated values?
- balaji1 5y agoShould we just consider buying an air purifier? Currently in Bay Area where air outside seems good but these apartments seem poorly ventilated, old fixtures, old floors, lots of electronics, etc.
- newman314 5y agoGiven that the correlation is pretty good, I wonder if it's sufficient to just add a compensating factor to get a better sense of air quality.
- smusamashah 5y agoAppend this info in your article please. It's a very useful suggestion for future readers.
- wnevets 5y agoHave you tested other air quality sensors, if so have you tested the uHoo? https://getuhoo.com/ https://getuhoo.com/
- accountofme 5y agoHi author! Nice write up and good analysis. However I think you missed something in the analysis. The sensor is only accurate to +-20uG/m^3 this also means it can never reach a reading of healthy air according to the WHO specs... I think that is a bigger issue that the traffic light UI. Apologies for picking on this issue. I am very thankful you took the time to create this article and look at the all the specifications.
- ZoomZoomZoom 5y agoI assume you're in some way connected to the site maintainers (or it's just you). Please, tell them the site is broken, as it does not display anything without JS. There's nothing dynamic on the page (in fact, on most pages on the site). It's mostly text and images, a user doesn't need to run your blobs of code to see them.