Subject:
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LM35 Again
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 6 Oct 1999 02:08:36 GMT
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Original-From:
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Jose Luis <hal9000@cvtci.com#spamcake#.ar>
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Viewed:
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616 times
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Hi,
I have been trying again to connect the LM35 temp. sensor (10mV/C) to
one of the general-purpose Analog inputs (No pull-up), and I have no
success, the result was the following:
the analog( ) was 121, the equivalent aprox. to 250 C, obviously incorrect.
the output voltage of the LM35 measured connected to the HB was 2,32 V. ,
which is consistent with the reading I get from analog( ). But if I
disconnect the output from the HB, and read the voltage it is 0,2 V. ,
equivalent to 20 C, which is correct.
So I have no idea why this happen, I have used a Hall effect sensor
(UGN3503, which has also analog output) and no problem, the HB reads it
perfectly and without any adapter.
Well, I hope that someone have some idea to share.
Thank You.
José Luis
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Message has 2 Replies:
 | | Re: pneumatic and hydraulic cylinders
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| Hi everyone! can anyone recommend a place where i can get pneumatic and hydraulic cylinders, and hopefully at reasonable prices? my team and i are planning to build a robot making use of those cylinders. has anyone done the same? any advice would be (...) (25 years ago, 6-Oct-99, to lugnet.robotics.handyboard)
| | | RE: LM35 Again
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| Hi, Like an update to my prior email, I have tested the LM35 with an external power source, with the same bad result. Any help will be welcome. Thank You José Luis ----- Original Message ----- From: Jose Luis <hal9000@cvtci.com.ar> To: (...) (25 years ago, 11-Oct-99, to lugnet.robotics.handyboard)
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