News for hackers. Stuff that matters.

A comment on Ask HN: What do you do with your Raspberry Pi?. Parent comment

Re:Ask HN: What do you do with your Raspberry Pi? by jdsnape on Monday June 24, 2019 @02:02PM (#20266460)
What sensor did you use? All the ones I’ve seen tend to be pretty expensive
[ Parent | on HN ]
Re:Ask HN: What do you do with your Raspberry Pi? by 2sk21 on Monday June 24, 2019 @03:19PM (#20267375)
Yes - the sensors are a bit expensive at about US$ 90 apiece but as I explained in another comment, I think that it has paid for itself
[ Parent | on HN ]
Re:Ask HN: What do you do with your Raspberry Pi? by anfractuosity on Monday June 24, 2019 @06:56PM (#20269396)
You can get cheap NDIR based sensors from aliexpress (around $20) such as MH-Z14A, which I've used with a Pi, via the UART interface. I just hooked it up to the 5V line on the Pi pin header and then used the Pis UART lines for the data, as that runs at 3.3V.
[ Parent | on HN ]