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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!psinntp!openwx!mikel
- From: mikel@networx.com (Mike Lempriere)
- Subject: Re: Temp sensor with PC interface?
- Message-ID: <1992Nov13.210241.22329@networx.com>
- Sender: usenet@networx.com (Usenet News Account)
- Organization: NetWorx
- X-Newsreader: TIN [version 1.1 PL6]
- References: <1992Nov10.074004.60602@cc.usu.edu>
- Date: Fri, 13 Nov 1992 21:02:41 GMT
- Lines: 17
-
- Jay Cliburn (slh1y@cc.usu.edu) wrote:
- : I originally wrote:
- : >>> Can anyone recommend an ambient air temperature sensor which interfaces
- : >>> to a PC? It doesn't need to be very sophisticated or super accurate, I
- [stuff deleted]
- : I left out an important piece of information from my original post -- the
- : room(s) will be up to ~1000 feet from the computer. I believe this will drive
-
- (National?, Fairchild?) LM34d chips (3 pin transistor pak) cost about $1.29
- a piece. The are voltage controlling devices -- you read 0.01 volts per
- degrees Fahrenheit eg. room temp. of 68 degrees = 0.68 volts.
-
- With normal 4 conductor wire and a pair of resistors, you're in
- business! All you need then, is an analogue-to-digital-convertor.
-
- You're doing exactly what I'm doing, but I had to build my own A-to-D card.
- Does anyone know where I could buy such a thing?
-