Fun with Sensors

I started woodworking some more in the garage, since I plan on doing this for decades to come I should worry a bit about air quality. I found a cheap sensor on eBay that can read particles the size of 1.0 μm, 2.5μm, and 10μm and provide both the AQI for that as well as a particle count. I bought a similar all in one device on Amazon which is nice for a visual I can move around the shop and another bare device I wired into the Raspberry Pi. The result of using my table and miter saw are below. The base-line is because I run a box fan and air filter setup to try and keep the air somewhat clean.

Miter peak at AQI 50 @ 10μm and tablesaw peak of 139 AQI @ μm as graphed with grafana.

As shown the air quality is pretty bad when using these tools. Which means I will be wearing a N95 mask while using them to be on the safe side. But it looks like setting up the cuts I need to probably be less worried due to my box fan air cleaners. Next up is collecting more data around cleaning up (I use a leaf blower to kick up stray dust for my box fans to catch) and sanding. The result will hopefully be a nice coffee table. The progress of which after this weekend is about ready for finishing:

Coffee table progress.

Sensor is the Plantower PMS5003 (spec sheet) (amazon affiliate link) — This one includes a handy breakout board so you don’t need to solder from Adafruit and some code: Link here.

One with a screen I found on Amazon, there are cheaper ones available (Mine was about 50 bucks I think at the time): (amazon affilate link)

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.