What is the Controller board? and how it is useful?
The controller board can be named as the “brain” of the 3D printer, it will convert the digital data from the received GCODE, to electrical signal that will move the motors, heat the extruder and bed, and keep things working as they should.
They are basically ranked according with the number of motors supported, micro-stepping and the power processing.
What is the LCD, and how it is useful?
The LCD (short for Liquid Crystal Display) is the main interface between the printer and the user, this is also called HMI – Human-Machine interface.
The LCD provides easy access to the settings, Actual temperatures and targets, motor position (in relation to the home point) selection of files to be printed from a SD card, and also keep track of the progress.
There are several models available, so we will only cover the most used and those worth testing. We can rank the LCD based on its features, like SD support, resolution, response-time, touch and colors