HD44780 LCD User-Defined Graphics. The HD44780 is a controller for character-based liquid crystal displays (LCDs).
In addition to the standard pre-programmed characters, it allows you to define up to eight of your own graphic patterns on a 5-by-7 (or sometimes 5-by-8) grid. This page lets you experiment with various patterns and shows the numbers that need to be programmed into the controller to get those patterns on to the display. Peter Ouwehand has written an excellent article describing how to use the HD44780. Click in the green grid to the left to set and clear pixels to create the graphic you want. GLCDks0108. Arduino LCD playground | KS0108 Graphics LCD library KS0108/glcd is an unofficial Arduino library that supports Graphic LCDs (GLCD) that use the KS0108 (or equivalent) chip.
The next version of the GLCD library (v3 - now called "glcd") is now available. It has higher performance, more features, supports more Arduino boards and is easier to integrate with different panels than version 2.