I can't understand which is the right powersupply to use. In the wiki there is a 5v 4A, but the led matrix absorbs to the maximum power about 16A.
Ok, this is the case in which all the leds are turned on at maximum power... so what is the right powersupply?
I don't understand the question.
The wiki says 4A. And that's enough. Wouldn't write it in there if it was wrong🙂
There are also users who run the whole matrix via USB Power, for years.
If you want to switch all LEDs to 100% White you have to buy a 75W power supply.
its up to you