Denbo:
rgPaiva:
I already did it, but it only shows 1023...So you are saying that even running a wire from A0 to ground you are getting 1023? Are you connecting a wire from A0 to the GND port on the Mega directly?
If so something is wrong. Even if there is a short running it directly to ground should bring it down.
Is your Mega sitting on top of a metal table or something? There are no shields installed right?
Yes i connected a wire from A0 to GND directly too, and tried the ReadAnalogVoltage program, but it shows only 5v. And i havent tried the 54 digital pins , only the pwn outputs, but i think the problem is with the ATMega2560 ;/. And it doesn't have any shield on it, and i am using it on wood table.