LED Matrix 64x64, white LED shows tiny red dot ontop

1

Hi there,

I use a HUB75E P3 64x64 LED panel with ESP32 / raspberry pi etc. I notice that each LED shows a tiny red dot if it is set to white and a tiny blue dot on the bottom when it shows magenta color.

I know and understand the concept that the color white is a combination of RGB. The LED shows white but it seems that the red component is brighter(?) than the others.

Since this is the only panel I have and I can not compare it to others, I have the question: If you are like 2 meters away from the panel, do you still see “the RGB components” of the color white or is it pure white?

Thanks guys,

Martin

2

The lights look better when diffused, so the RGB components can mix. Search the forum for diffuser to get some ideas, it can be as simple as a sheet of printer paper.

Are you powering with a full 5V power supply, with enough current to handle what you’re displaying? If the power supply dips, red LEDs have a lower voltage to turn on, so you’ll get more red than others. Usually it should look mostly even, but you can see variation between LEDs if you look closely.