Matrix Portal M4 - panel brightness control?

[sermann]

I am trying to adjust the brightness of an 64x32 matrix display attached to a MatrixPortal M4 based on the room's brighness, thanks to an BH1750 light sensor.

Code: Select all

from adafruit_matrixportal.matrix import Matrix
matrix = Matrix()
matrix.display.brightness = 0.5

From what I can tell, 0.0 will turn off the display and anything else will set it to full brightness.

Is this how it is supposed to work, or should the panel brighness be adjustable?

Note: the connector between the display and the MatrixPortal M4 got damaged and possibly poorly repaired by me, so it could be a hardware isse.

Any thoughts and suggestions?

[dastels]

From some digging through the framebuffer and rgbmatrix implementations (in the CircuitPython source) it would appear that brightness control is not supported: it's either on or off.

Sorry.

Dave

[sermann]

Thanks.

Will try playing palettes to simulate brightness control.

Cheers,

Stephen

[dastels]

Yes, that's generally what brightness controls do: scale the RGB values you set.

Dave