powering arduino externally

Other Hardware General Electronics
1

hello,

this is my first time on a forum and first topic, sorry if i make rookie mistakes.

im making a beerpong table with under each cup a led ring of 8 ws2812b leds and a IR sensor.

i have a power supply wich goes from 220v to 5v 40A. im planning to connect all the + and ground of the led rings and IR sensors in parralel. but my question is: how can i power the arduino from my power supply of 5v ?

if you guys have more tips or things i should keep in mind while wiriring my project please let me know!

2

It that 5V i regulatet(stable) - connect directly to an arduino 5V rail.
There is a low drop regulator, so the Vin-pin will probably also work just fine

3

so if i connect my power source to the ''vin'' or ''5v'' and the ''gnd'' it will be fine?

4

On most Arduinos Vin needs 6.5 to 7V to work reliably. But the 5V pin should be fine with your 5V supply.

Steve