I'm trying to read the temperature off a TMP36 temperature sensor, but I've found that I when I have an LCD connected to the Netduino I get incorrect results.
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When I have the LCD connected I get temperatures which seem to fluctuate and are off significantly. When I remove the LCD things tend to be fairly steady. The LCD I'm using is is SparkFun's 3.3V 16x2 Serial Enabled LCD. The documentation says that this LCD draws about 60ma when the back-light is on.
Is this too much for the 3.3v bus on the Netduino? Right now I'm powering via USB, would this be different if I was using wall power?
Whats the best way to handle this situation?
Many thanks!