Arduino CO2 sensor with OLED display

Here’s a demo I put together to get CO2 readings out of a sensor and display them on an OLED.

I wound up with a box full of these CO2 sensors after developing a Coldfire / uCLinux product used to monitor air quality in data centers.

When we used them, they were calibrated via a lab setting with tanks of CO2. My testing with a sandwich container and my exhalations would have made the rigorous scientist I worked with giggle.

I’ll dig up the code and put on github if anyone’s interested.

If you want to build this, you’ll need the following item:

• Three-pack of Arduino Nanos like you see in the video
• (Expensive) CO2 sensor I used
• Five-pack of OLED displays like what I used