When HN users recommended it
1 HN user recommended this in 2022, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this in 2022, in one comment.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
You really don't need a 270 usd device for particle count.
A PM2.5 particle count sensor is like 25 bucks and temp/humidity/pressure another 10, so you can DIY this quite cheaply with a raspberry if so inclined.
https://www.amazon.com/WINGONEER%C2%AE-Precision-Quality-Det...
https://www.amazon.com/bobotron-Compatible-Temperature-Atmos...