Hello everyone
Has got a problem with 12864 LCD display.
Was started to check the end stop when the display suddenly becomes quite bright / white.
When only the USB plug from the computer is in the display is normal / readable when I put power (12 V) to the Arduino Mega 2560 and / or 5A input, the screen goes white / overexposed.
With a current of 11 A input screen is normal.
Are there any of you who can tell what is wrong?
thanks
fp
