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Excellent explanation but I have a small add to it:a 10-bit value can represent 1024 different values but, if the first value is 0 then the last is 1023 not 1024. So, for 0V your ADC reading would be 0 but for 5V it would be 1023.
why is the aref connected to 5V
I accidently plugged the LED into the aref instead of the GND.
Will anything happen to the board??
Hi! But what if I needed 9v calibration for just 1 Analog pin and 5V for the others?
Your means to say that aref is just to take calibration of a sensor work on low voltages like 3 to 2 volts and to make the calibrated or digital data precise we use voltage reference because the arduino board is generally of 5v Ami correct please say I just understand this about aref.
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Posted:Mar 25, 2011
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