Integrate the Carbon Dioxide (CO₂) Module

Enhance your Everything Presence One with CO₂ monitoring.

Hardware Setup

1. Power off your Everything Presence One.

2. Locate the GPIO pins in the bottom corner of the board. The exact layout may vary by revision.

   

   Everything Presence One + CO₂ module

3. Align the CO₂ module with the pins, ensuring the 3.3V and Ground connections match.

4. Firmly push the module into place.

Software Setup

1. Using the flasher below select the following settings.

2. Select:

   • Home Assistant

   • Your mmWave sensor

   • CO₂ module

   • Your board revision

   • Choose Bluetooth firmware

3. Click Connect and follow the on-screen instructions.

Once installed, the CO₂ sensor should automatically appear in Home Assistant.

https://docs.everythingsmart.io/flash/everything-presence-one.html

Using the CO₂ Sensor

Once installed, you'll find a CO2 sensor entity in Home Assistant that reports the current carbon dioxide level in ppm (parts per million).

Typical CO₂ levels:

• 400-450 ppm: Fresh outdoor air

• 450-700 ppm: Well-ventilated indoor space

• 700-1000 ppm: Acceptable indoor air quality

• 1000-2000 ppm: Poor ventilation, may cause drowsiness

• 2000+ ppm: Very poor air quality

Calibrating the CO₂ Sensor

The CO₂ sensor may need calibration if readings seem inaccurate. A Calibrate CO2 button is available in Home Assistant.

When to Calibrate

• If readings are consistently too high or too low

• After the sensor has been powered off for an extended period

• If readings don't match a known reference

How to Calibrate

1. Place the sensor in fresh outdoor air (or a well-ventilated room with a window open) for at least 5-10 minutes.

2. In Home Assistant, find the Calibrate CO2 button under your device's configuration.

3. Press the button. The sensor will calibrate to 419 ppm (approximate outdoor CO₂ level).