Mielott megkerdeznem a muszeresz apamat, ezt talaltam a neten:
A maximum of 16mA per pin with the total current from all pins not exceeding 50mA[sic]
http://www.thebox.myzen.co.uk/Raspberry/Understanding_Outputs.html
Itt is figyelmeztetnek:
"The drivers will allow you to pull more current - the SoC might get warm - to the point of burning out the pin drivers or the entire SoC. I have pulled 35mA out of a single GPIO pin in the past - I feel I was lucky that day and got away with it."
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=44&t=45151
Ha jol tudom egy led 20-30mA-t hasznal. Szoval ovatosan.