Hi, I found that code from instructables and tried use in a spark core. I received incorrect values. temperatura = analogRead(A0); val = analogRead(tempPin); float mv = ( val/1024.0)*5000; float cel = mv/10; So I change the code to following, but receive incorrect values. My question is wh…

lm35 spark read incorrect temperature

ScruffR April 25, 2015, 6:20pm 4

Are you sure you’re using a 3V3 sensor?

Since the standard LM35 requires a minimum if 4V supply

Newbie - problem reading LM35 sensor - voltage measured differs

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