Hi, I am new to Arduino and this forum. I am trying to build a machine to extrude 3d printing filament and using an LCD screen to display commands to prompt user input using a rotary encoder.
The problem I am facing is that every time I supply power to my Arduino the lcd only displays white boxes. I have attached the code and would greatly appreciate any help or information as to why this is happening as I am a complete Arduino novice. I am using an arduino mega 2560.
Thanks in advance.
Main_Code_experimental.ino (53.1 KB)
screen_update.ino (24 KB)