I'm wondering if the voltage regulator on my arduino board (DFRobot clone) is getting too hot.. I have a 12V 200mA wall wart, and when I leave it powered with this wart, after an hour or so the regulator is hot to the touch. Gets painful if I leave my finger on the caps for 10~20 seconds.
Is this normal, within tolerances.. supposed to be?
I have a IR receiver, 20x4 LCD, small buzzer, 5mm red LED and the asynclabs wifi shield 2.0 connected to it, not sure how much power each of these things take.. but it can't be a whole lot.