Did I just fry my micro ?

Development Tools IDE 1.x
1

Hi all,

I wanted to try a project with three 75HC595 shift registers.
So I the three hooked up to my arduino micro and... hooked up 24 leds with 270 Ohm resistors to the three 75HC595's

I powered all this from the +5 pin from the micro.

Now my micro isn't recognized by my computer anymore :frowning:

Have I fried it ?

2

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3

Hmmm, seems like I fried it indeed.

Just to be sure: I guess plugging an external power supply into the arduino and drawing the same current from the 5v pin won't make a difference ?

So this would be the solution ?

  • The external power supply +5v connected to the 5v of the three 75HC595's
  • Power supply ground to arduino ground

Thanks