MH-Z19B Wiring Sanity Check

Hardware
,
1

Just to clarify,

The current implementation of the MH-Z19B…

  • is powered by the 5VDC bus provided by the Pi, so it doesn’t use the UART to USB converter

  • connects directly to the Pi’s serial port

  • Pin 8 Tx to the Rx of the sensor

  • 10 Rx to the Tx of the sensor

Assuming that is true, could I solder some headers to the sensor and connect via Dupont wires or is it better to just use the included wire harness?

Thanks!

2

That’s all correct. I’m not sure what you mean by an included wiring harness, but you can connect it to the Pi with any method you like, be it a connector or just wire.

3

Thank you, Kyle.

There’s a small seven wire JST-PH-ish wiring harness that came with the sensor I bought from Amazon. I just wanted to be sure that soldering was OK and that there wasn’t some reason why the wiring harness was the preferred way to do it.

4

Okay, I think I know what you’re referring to. You can cut that connector off any put your own connector on.