Room Climate Controller

Circuit board from Make

https://www.heise.de/news/Aktion-Make-verschenkt-Platinen-fuer-die-CO2-Ampel-4938738.html

Also inspired by

https://www.heise.de/select/make/2020/5/2022015381334973804

Features

• Controller: ESP8266WiFi

• In a room, it measures (SparkFun SCD30):

  • CO2 level
  • Temperatur
  • Humidity

• Displays all measured values on a Adafruit 7-segment matrix

• Displays measured CO2 level on a traffic light (three LEDs: green, yellow, red)

  • green: very good air quality (<=800ppm)
  • yellow: good air quality (<800ppm)
  • yellow+red: moderate air quality (>1200ppm)
  • red: unhealthy air quality (>1400ppm)
  • green+yellow+red: very unhealthy air quality (>2000ppm)
  • see Pettenkofer-Zahl: https://www.svlw.ch/427-pettenkofer-zahl-und-co2-konzentrationen

Python script

• CO2 level on a traffic light on top (green, yellow, red)
• Live plot of:
  • CO2 level
  • Temperatur
  • Humidity