Forum 2005-2010 (read only)
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Sep 14, 2009, 11:32 am
i am using lm35dz for temp. mapping but i can not get mv in o/p. so what is the proper circuit to measure it.
I don't think you connected the grounds, Dave.
Sep 14, 2009, 11:42 am
: Sep 14, 2009, 11:45 am by AWOL
With a 5V analogue reference, you should get about two counts (5 / 1024 = 4.88mV / count) per degree on an analogue input pin.
If you need to measure temperature below zero Celsius, you'll need to offset the negative voltages.
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