Genie – Screen Saver – Arduino

The ViSi-Genie Communications Protocol provides a function for controlling the contrast or brightness of the display. From section “2.1.3.5 Write Contrast Message” of the ViSi-Genie Reference Manual:

The host issues the Write Contrast command message when it wants to change the contrast
or brightness of the display. Certain power saving modes and applications may require the
host to dim or completely turn off the backlight.
Note: Contrast value of 0 will turn the backlight OFF. Any non 0 value will turn the backlight
ON.

The datasheets of 4D display modules describe a relevant fact in the Display Precautions section:

Avoid having to display the same image/object
on the screen for lengthy periods of time. This will
cause a burn-in which is a common problem with
all types of display technologies. Blank the screen
after a while or dim it very low by adjusting the
contrast. Better still; implement a screen saver
feature.

This code example presents a working ViSi-Genie-Arduino application wherein the backlight of the display module is turned off (contrast or brightness is set to zero) after a predefined period of time.

, https://i.ytimg.com/vi/X6VWaSsN6L0/hqdefault.jpg

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