The Air Quality Wing

Everything works until it doesn't!

One of the main things to worry about when building any board is your supply chain. In my case, some of the parts for the AQW are no longer available. 😬

Unfortunately, it was one of the main sensors, the CCS811 and a ferrite bead. The latter is an easy fix but the former is troublesome. I originally did a comparison between the BME680, CCS811 and the SGP30-2.5K. At the time, the CCS811 was easiest to integrate with and with some firmware updates the CCS811 I had seemed to be working ok. Other folks have not had the same success though.

So, I took a step back and reevaluated the two other choices. After fixing some serious bugs related to the SGP30 in my code, it seems to be much more stable.

I'm going to continue my testing over the next few days. In the meantime I've sent a SGP variant of the AQW to fab. Here's the 3D render:

I'm looking forward to kicking the tires a bit more. 😎

You read it right. The Air Quality Wing has an official case. Here's a preview of what it looks like out in the wild thanks to Jim:

Here are some renders with some of the main features pulled out:

Yea! 

If you don't like pictures here's a list:

• Detachable lithium battery compartment.
  • Maximum battery size:
  • Width: ~81 mm
  • Length: ~41.9 mm
  • Height: ~10.35 mm (includes battery expansion wiggle room)
  • Secures with M2.5 screws
• Precision openings for the Honeywell HPMA115S0
• Dual purpose top opening for Particle RGB LED and Ventilation
• No fastener clip top
• Enough room for the original AQW and Reduced Size Version (v5 and newer)
• Knock outs for antenna connection and battery connection
• USB port cutout to run off USB power

Don't care much about features and want to print the dang thing? 

Click here to download all the .STL files!

Thanks to everyone that made this possible. It's been a fun ride working on this project. For more information on the case and the Air Quality Wing check out the official documentation.

It's been awesome to see what people are doing with their Air Quality Wings! David designed his own enclosure which looks great! 

Here's the  full tweet: https://twitter.com/dchote/status/1201659663667941376?s=20

Also, thanks to some awesome feedback from the community, V5 will be coming soon! Here's a picture of things to come:

It's the same size as other Featherwings! That means you can solder male or female headers on!  Can't wait to test it some more and get it into everyone's hands! :)

I've been big fan of my Grafana + InfluxDB setup. It's been running strong for months. It gives me great insights on the sensors scattered throughout my apartment.

Here's a screenshot of testing a V2 of the Air Quality Wing and a V4.


Not many differences but the V4 seems more responsive and it's running much cooler. (Notice the spike in TVOC? That's from cooking in the kitchen as I write this!)

I just updated the guide on Grafana to include some steps on adding alerts. You can use Grafana with almost any service. Plus, with web hooks, you can connect to services that aren't built in. 👍

If you’re wondering, yes there’s an enclosure! Many thanks to the designer, Nicholas, for taking the time to make this amazing enclosure.

Provided courtesy of Nicholas.

You can print your own by downloading the STL files in this Github repository.

Side note: as of this writing, there are some issues with holes lining up with the holes on the board. Only the stand-offs should be used:

Also you may have to grind away at the area closest to the USB connector.

This is due to the header bits extending beyond the bottom of the board.