Adding fancy GUI (Graphical user interface) to your project can be very time and assets consuming. Sometimes you even want to upgrade existing design, so significant hardware changes are not possible. Nextion displays are great solution in such situations.
These are smart displays that help you develop front end look and functionality in just few hours.
More microcontroller devices are using 'smart LCD' displays to output visual information. The following discussion covers the connection of a Hitachi LCD display to a PIC microcontroller. LCD displays designed around Hitachi's LCD HD44780 module, are inexpensive, easy to use, and it is even possible to produce a readout using the 8 x 80 pixels of the display. Hitachi LCD displays have a standard ASCII set of characters plus Japanese, Greek and mathematical symbols.