CO2 Ampel for ESPHome by LinkGear (LG-ECA1)

Device Type: sensor

Electrical Standard: global

Board: esp32

Difficulty: Comes with ESPhome, 1/5

Project URL: https://docs.linkgear.net/books/co2-ampel-for-esphome/

CO2 measurement in a room matters because high CO2 levels indicate poor air quality, which can lead to fatigue, impaired cognitive function, and potential health risks. The LinkGear CO2 Ampel features a high-accuracy SCD41 CO2 sensor, a BME280 temperature/humidity/pressure sensor, an illuminance sensor, and finally, 8 RGB LEDs that can be used to meaningfully output sensor readings.

You can either use our pre-configured ESPHome configuration to output the CO2 status on the LEDs or change it to your liking (e.g., to control the LEDs independently). If you want to learn more, please check our manual and instructions page

Sensors

The device is equipped with the following sensors:

• SDC41 for accurate CO2 measurements
• BME280 for temperature/humidty measurements
• BH1750 for illuminance measurements (e.g. to control LED brightness)

Pinout

Basic Configuration

The configuration is available on the GitHub page.