Hello,
I’m quite new in the Arduino world. I bought a MH-Z19B - CO2 Sensor with a cable. Unfortunately I don’t know how I can connect this device with a breadboard. Do I have to buy a plug to connect it ?
Thank you for yours answers.
First hit on search "MH-Z19B CO2 Arduino":
You will need to solder jumper wires to the sensor.
ok thanks
Note that the CO2 sensor uses 3.3V logic levels. That tutorial suggests to connect the sensor directly to a 5V Arduino, which is wrong.
You can connect the sensor directly to a 3.3V Arduino, or when using a 5V Arduino, with logic level shifters, like this one.
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