Subject:
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Re: Temperature Sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 28 Jul 1999 23:50:44 GMT
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Viewed:
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801 times
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Jonathan Knudsen <lego-robotics@crynwr.com> wrote in message
news:3.0.5.32.19990728084539.00946c80@m9.sprynet.com...
> I tried the first (which I happened to have), which
> has the correct 10K @ 25C resistance and a
> coefficient of -4.4%/C. In series with a 2.2K
> resistor it still reads a few degrees high.
You might try a trim pot in place of the 2.2K and set the room temperature
to be the correct value. You could later determine the trim pot value and
replace it with a fixed one. I've heard that even the LEGO temperature
sensor is not that accurate. +-1C should be good enough. Thanks for the
Digikey part #s.
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Message is in Reply To:
 | | Re: Temperature Sensor
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| Mike, You are the man. Thanks for the information. Digi-Key sells two thermistors that match that description. The first is KC003T-ND, for $2.71; it has 1 degree accuracy. The second is KC003A-ND, for $11.50; it has +- .2 degree accuracy. I tried (...) (25 years ago, 28-Jul-99, to lugnet.robotics)
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