How much current can arduino ground absorb? I am currently working on an LED 4x4 cube, so here is my pre planned circuit diagram.
https://easyeda.com/editor-mobile/#id=ffca9f3303f242a185b950b0bee4fa29|


I am to connect 220ohm to each positive terminals.(16)

I am to use 4 transistors(2n2222) for 4 negative layers of which, collector terminal will be connected to the negative terminal layers , base will be connected to 4 analog pins through 1k ohm, and emitter to be connected to the GND pin of arduino. Using transistor as a switch.


Can my studio ground get damaged if connected directly without a resistor.
If no?
Is there any way to make it?
Explanation with circuit diagram will highly be preferred...
Thanks for your precious time...
No your gnd won't get damaged if you source current through it. If u need explanation let me know