What is it
Display Controller with 4 keys, LCD-2004 and a TF card reader,
Used for display the Printer status and Print by the TF Card.
Display four rows, 20 characters per line LCD 2004.
Easy for put your brand or name in it by the PiBot Firmware.
How it works
Conect the lcd 2004 to keys board via dupont line.
Connect to the mother controller board via display controller cable.
More detail please check the tutorails - "Configure Your Firmware".
The words Display In LCD, put your machine name in this, but not too long
You can assemble to you machine like this way or design the panel by yourself.