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3
Getting Started
By default the 20 LEDs are divided into equal virtual segments. The height of the virtual
segments can be modified too. There are four ISDU registers (Level mode limit x-y ISDU
register), in which the limits of the virtual segments can be modified. For example: If the
input level value is higher than the limit value of the 2. and 3. segment (Level mode limit 2-
3), the current LED will become the color of the Level mode segment 2 color. The limits can
be given either in percent or in absolute value.
The LED bar at increasing input data, there is no color dominance. The limits of the
segments are modified, so they are not equally distributed. Of course segment 3, 4 and 5
could have different colors too.
Seg. 1
Seg. 2
Seg. 3
Seg. 4
Seg. 5
3.10
Runlight mode
To use the module as a runlight display, the Mode ISDU register must be set to runlight
mode. In the runlight mode, the complete module displays a running light effect. In this case
all of the LEDs are working as one runlight effect. The runlight mode is controlled by ISDU
registers.
Four registers set the functionality of the runlight. The color of the running LEDs, the
background color, the number of the running segments and the speed of the running
segment can be set in the ISDU registers. One segment has a size of 4 LEDs. The number
of the running segment can be set between 1 and 3.
