what if input voltage is -Volts(negative volts)
what does ADC(let say A0) give value????
"Board on fire", code 0x15.
Seriously: negative voltages on the inputs can damage your Arduino. There are techniques to transform the voltage into something Arduino can use; search the forums for "level shifting" for one approach.
-br
if i have a input audio signal from +5v to -5V how do i store the values
or is it possible to use two ADC ????
-author
Did you search for level shifting? You could also try rectifying the signal.
can u upload the link ????
-author
Link to what? There is a search box in the top right corner, or try Google/Bing/Whatever.