Hello, I need to control a colorbox indicator with values from 0 to 225, but the colors must be in 8-bit grayscale. Any ideas?

The color box is U32. Given a U8 greyscale number, you simply need to join it three times, and pad with zeroes to get a greyscale color value. There is the RGB to color tool that does this for you. Simply wire the U8 value to all three inputs.

LabVIEW

colorbox grayscale

Solved!

@altenbach wrote:

Another option is the use of a table instead.

Here is an example how to color cells of a table according to the value in the cell. (Here my color ramp is white up to 0.5, then blends onto red at 1.0)

You can easily substitute your grey ramp for the diagram constant.

(For larger tables you should defer panel updates to improve performance)