I want program an arduino to read LCD data - I have a 3d printer that can connect an LCD text display for output, I want to tap into that output so my arduino know's what the 3d printer is sending.
If you're interested why - I want to be able to send commands to the arduino via the LCD display from the 3d printer (commands that will be interpreted to do things, such as switch off power via a servo etc.).
Basically, I want the opposite of http://www.arduino.cc/en/Tutorial/LiquidCrystalSerial
Is this possible/easy enough to do? Or is it too hard to get an arduino to do this?