Build an IOT CO2 sensing bird to alert you of the air quality levels! This bird alerts you when it detects high levels of CO2.

Much like the canaries that were kept in coal mines to detect gases, this build uses a CO2 sensor to detect if the air quality and Adafruit.IO / WipperSnapper will automatically move a servo up and down.

When the air quality is poor, the bird will drop, until you open your windows and bring it back to life:

  • When the level of CO2 in a room is above 1000 ppm, a CO2-sensor activates a motor that will make this bird drop down.
  • When the level of CO2 is below 1000 ppm, the bird will rise back up!

Reactive Servo Actions

IoT projects just got a whole lot easier! With Adafruit’s WipperSnapper, you can connect I2C sensors and do useful things with your data.

WipperSnapper is Adafruit’s No-Code solution for making IoT projects with support for dozens of WiFi enabled dev boards.

With Reactive Actions, make a feed turn something on, like a motor based on the CO2 levels among other environmental variables! 


Angled shot of purple square-shaped microcontroller.
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Micro servo with three pin cable
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Angled shot of Adafruit SCD-41 - NDIR CO2 Temperature and Humidity Sensor.
Take a deep breath slowly breathe out. Mmm isn't it wonderful? All that air around us, which we bring into our lungs, extracts oxygen from and then breathes out carbon...
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Angled of of JST SH 4-Pin Cable.
This 4-wire cable is 50mm / 1.9" long and fitted with JST SH female 4-pin connectors on both ends. Compared with the chunkier JST PH these are 1mm pitch instead of 2mm, but...
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2 x M2.5x5mm Screws
QTPY mount Screws M2.5x5mm
2 x M2.5x8mm Screws
Wall hook Screws M2.5x8mm
4 x M3x5mm Screws
Sensor Screws M3x5mm
1 x M2x12mm Screws
Servo Screws M2x12mm

This guide was first published on Sep 20, 2022. It was last updated on May 13, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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