HiIm looking at the code in the Arduino Starter Kit Projects Book...in Project 03: Love-o-MeterI was able to get very good accurate voltage output on the center post of the TMP36 -- reading in my analog in converts to Volts reading very close to what my Brymen 869s is saying for center pin to ground.So I feel like I got the voltage reading right... but what bothers me - is I have two temperature sensors that disagree with the TMP36... by about 2-4 degrees off.. they read hotter... and Im pretty sure it IS hotter because of my discomfort level and because of their agreement with the weather temperature reading as well.... so 3 temperature readings not agreeing with one TMP36 using Arduino....Im trying to discover the potential source of inaccuracy... because the sensors spec sheet says it should be quite accurate around this rage... +-1-2 which is not anywhere near the 2-4 degrees off Im seeing.. sometimes 5.does anyone have any thoughts or ideas why the Arduino starter kit project would show this much offset?I tried getting actual Vcc voltage reading for the ADC - and using that... using internal 1.1 reference and all... this made it slightly better but still 3-4 off... still not what I was hoping for... 1-2 off I probably could accept.. but I feel like the math is off somewhere in someones formulas...Anyone?
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