Air quality monitoring is definitely the future.<p>In home and all over every city.<p>They really should be in every K-12 school and college university on a public open network.<p>PurpleAir's network is the best we have right now because the federal airnow network is absolutely terrible with too few sensors.<p>Hopefully AirGradient can build their public network, I've suggested before they try to get integrated with the WeatherSTEM network which has everything but air quality nationally.
In Nov 2018, during the Camp Fire, I was in the Bay Area and was thrilled to have an air quality tracker from Wynd [1]. It is small, but seemingly accurate (when comparing outdoor readings with PurpleAir[2] readings). It allowed me to identify drafts of contaminated air coming into my home and seal them up, such as the fireplace (of course) and the gap under the door to the garage. I was running a few HEPA air purifiers and within a couple hours I was at 0 AQI for the whole weekend in the whole home.<p>I remember Monday morning all my co-workers had raspy voices. They did keep their windows shut, but even with HEPA air purifiers running, that wasn't sufficient to create a living space with clean air. You really had to have the ability to find and seal up the drafts!<p>The Wynd air quality tracker has been sold out for a long time, but it's part of another product, a personal air purifier / tracker bundle [3], too.<p>1: <a href="https://hellowynd.com/products/wynd-air-quality-tracker?variant=44077938082065" rel="nofollow noreferrer">https://hellowynd.com/products/wynd-air-quality-tracker?vari...</a><p>2: <a href="https://purpleair.com/" rel="nofollow noreferrer">https://purpleair.com/</a><p>3: <a href="https://hellowynd.com/products/wynd?variant=25232063299" rel="nofollow noreferrer">https://hellowynd.com/products/wynd?variant=25232063299</a>
I received a free PCB from AirGradient a few years back, and am very happy with it. The only thing I was surprised by, was that by default the Arduino code asks for WiFi connection and then sends the collected data back to AirGradient.
I got the pro kit and it really is very easy to assemble. I want to connect it to my HomeAssistant server but apparently that requires manual configuration (firmware update? just config change? I'm not sure) by plugging it into the HA server directly. It does have a web portal but apparently that goes away once you give it your WiFi password. I wish I could configure it from the web interface instead of being funneled to the cloud service which I reject on principle.
Excited to learn about this. From my limited research, metal oxide VOC sensors are not very accurate due to sensor drift, instability, and cross sensitivity to temperature, humidity and inorganic gases.<p>How do you manage this and did you consider using an electrochemical or photoionization sensor?
It's too bad their shipping lead time is 6+ weeks, this looks like a nice open-source competitor to PurpleAir.<p>> We currently ship approximately 1-3 weeks after receipt of payments. Delivery takes 2-3 weeks to most destinations (North America, Europe, Australia).