Maxim7219 to contoll 256 LEDS

Other Hardware LEDs and Multiplexing
6

Hello Arduno forum,

Thanks to Leo, Grumpy_Mike and IEEE488 for their excellent replies.

Three ideas:

The Arduino Uno tech specs say

Arduino Uno Rev 3 Tech Specs
Microcontroller ATmega328P
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limit) 6-20V

So I guess I could just connect the recently
acquired 10 amp, 5 volt power supply
to the barrel jack on the arduino.
Right?

  1. But would not the voltage regulator
    on the Arduino get fried by the 6 amps
    being drawn by 256 LEDs?

  2. Or should i connect the power supply
    to the Arduino and the PCBs like

    1600×450 256 KB

    or for the double E types that prefer schamatics.

Either way I am going to stop typing and walk over and
connect it. Although I did fry and Arduino once the
great thing about low voltage you don't usually get
fireworks, it just doesn't work.

Allen