If any of you have missed IKEA has a “new” product called Vindriktning. It is a 2.5 PM air quality sensor (PM1006) with a color LED on the front to indicate the air quality with green, amber and red colors.
By default the device is not a smart or connected device but thanks to some clever people it is a perfect base for a DIY project.
First of all @Hypfer published his esp8266 code base and instruction how to connect and set up the device with an esp8266 and MQTT.
Then @Habbie took it further and made a PR to ESPHome to include the PM1006 as a 2.5 PM sensor in the ESPHome project. Since that many has tried to solder an esp8266 or esp32 to the Vindriktning and succeeded with the project.
Some pictures are available in the PR’s discussion section, but please do any follow up discussion here to leave the Github PR clean of any further discussion.
Special thanks also goes to (referenced from @Hypfer’s original work):