Hello, actually I am very new in electronics. Im using this as a reference in connecting lcd and 4x4 keypad in my my controller ( an arduino clone) Gizduino ATMEGA644 but I'm having a problem because of its pin different pin description.
When I tried connecting it the same with my reference (without looking at the pin description)I'm only having black box in the lcd after uploading a sample program. can someone help me?
this is the connection I used: