I have in my possession these sensors which I will try to adapt to your realization.

Sensirion SPS30 PM 2.5
Sensirion SCD40 CO2
Sensirion SGP30 TVOC
LilyGO TTGO T-Display ESP32

As I do not use LEDs, is it possible that the text line on the display
(CO2:849 ppm) changes colour depending on the CO2 value?
green < 800
yellow 800 - 1200
red > 1200

Thank you very much for your project which seems very interesting

Hi Koen,

Can you help me out please?
Created this folder config/esphome/common containing 4 yaml files: base, aqi, bme280 & mh-z19b.
in the yaml config for the ESP8266 the packages not used are # (out).
still getting al kinds of errors but can't find the issue.
When trying to transfer the configuration to the ESP:
Couldn't find ID 'pm2_5_value'
Couldn't find ID 'pm10_value'
Couldn't find ID 'show_calibrating'. Please check you have defined an ID with that name in your configuration. These IDs look similar: "co2_calibrate", "co2_calibrated"

I'm using the d1_mini wemos.

and more of those like that,

can you give me a hint please ?

thanks

H