This C02 sensor was a school project. We used an Arduino Nano and a MH-Z19B sensor who "counts" the C02 particles which are in the air.
The module can be easily plugged in any USB A port. At first it goes thru it's starting routine then it displays the C02 content in the air like a traffic light.
In this project I was in charge of designing the box which houses the Arduino Nano and the CO2 sensor and doing the 3D printing. I also did quality control and repairs.
| Product | Quantitiy | Price [€] |
|---|---|---|
| Arduino Nano (clone) | 1 | 0,50 |
| MHZ-19B | 1 | 20 |
| 3D Printed box | 1 | 1 |
| RGB-LED | 1 | 0,03 |
| Resistors | 3 | Free |
| Small cables | 4 | Free |
| USB mini b cable 50 cm | 1 | 1 |
| Total cost: | 22,53 |
