Marcepan
Posts: 3
Joined: Fri Mar 18, 2016 12:38 pm

Two wire temperature sensor

Tue Apr 12, 2016 6:08 pm

Hey guys,

Was wondering whether I could connect sensor from the picture to the Pi. It's currently hooked up with some generic PCB that was mounted to PC case. If it was possible, how should I tackle it?

Image

Thanks.

klricks
Posts: 7240
Joined: Sat Jan 12, 2013 3:01 am
Location: Grants Pass, OR, USA
Contact: Website

Re: Two wire temperature sensor

Thu Apr 14, 2016 12:58 pm

Marcepan wrote:Hey guys,
Was wondering whether I could connect sensor from the picture to the Pi. It's currently hooked up with some generic PCB that was mounted to PC case. If it was possible, how should I tackle it?
Thanks.
The sensor can't be directly connected to the RPi.
That is a temperature bead which is like a resistor that changes value as the temperature changes. It would need additional electric circuits to convert from resistance to voltage. Then more circuits to convert from voltage to digital. (Analog to Digital)
This is probably what the 'generic PCB' is doing.
Unless specified otherwise my response is based on the latest and fully updated RPiOS Buster w/ Desktop OS.

grahamed
Posts: 277
Joined: Mon Jan 30, 2012 7:01 pm

Re: Two wire temperature sensor

Fri Apr 15, 2016 10:57 pm

Hi

Looks like a K-type thermocouple. If it is then MAX6675 looks like a good solution. The plug is often a clue.

Marcepan
Posts: 3
Joined: Fri Mar 18, 2016 12:38 pm

Re: Two wire temperature sensor

Mon Apr 18, 2016 9:10 pm

I'll post another pic tomorrow to show you guys how it's plugged in to the 'PCB', however I'll probably just buy separate probe off eBay soon.

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