CO2 Gas Sensor(EF05030)
30. CO2 Gas Sensor(EF05030)#
The higher the CO2 concentration is, the lower the output voltage would be. The CO2 probe is made with industrial grade which is high allergic to CO2 and anti-interference to alcohol and CO.
Designed in RJ11 connections, easy to plug.
|Type of Connection||Analog output|
30.6. Quick to Start#
30.6.1. Materials Required and Diagram#
Connect the CO2 sensor to J1 port and the OLED to the IIC port in the Nezha expansion board as the picture shows.
30.7. MakeCode Programming#
30.7.1. Step 1#
Click “Advanced” in the MakeCode drawer to see more choices.
We need to add a package for programming, . Click “Extensions” in the bottom of the drawer and search with “PlanetX” in the dialogue box to download it.
Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.
30.7.2. Step 2#
30.7.3. Code as below:#
The detected value of the CO2 Gas sensor display on the OLED screen.
30.8. Python Programming#
30.8.1. Step 1#
Download the package and unzip it: PlanetX_MicroPython
Go to Python editor
We need to add enum.py and CO2.py for programming. Click “Load/Save” and then click “Show Files (1)” to see more choices, click “Add file” to add enum.py and CO2.py from the unzipped package of PlanetX_MicroPython.
30.8.2. Step 2#
from microbit import * from enum import * from co2 import * co2 = CO2(J1) while True: display.scroll(co2.get_co2())
The detected value of the CO2 Gas sensor display on the micro:bit.