[En-Nut-Discussion] Problem with Ethernut Startup
hugo.simon at gmx.de
Tue Jun 24 22:57:12 CEST 2003
> That are 32k of LEDs times 20mA each results in 655.36 Amps.
> No wonder that there is some noise coming from the power
No. They are multiplexed. 32 modules with 16x16x2 LEDs, each muxed so that
only one 32 LED Line per module is lit. So maximum is 32x32=1024 LEDs * 20mA
= 20A. Huh, there is something wrong. Ok, datasheet says max 3,2A per
module, so I have 3,2A x 32 = 102A. Supply is a 90A supplay. There are never
all LEDs on and the supply has an overload protection.
More information about the En-Nut-Discussion