Can I use the same ground for my 5V battery and Arduino like this:

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1

I have been powering my Arduino with an external 5V battery for a couple of days thru the vin and ground. I want to add a breadboard for testing some stuff.

I usually have my MKR NB 1500 connected to a USB port when using a breadboard. Then I would just connect the 5V pin to the breadboard plus lane, and the ground pin to the minus lane. But my external battery cant access the ground pin I was to this now. So I was wondering if I could share the same ground lane between the battery and the Arduino. Under is a sketch of the wiring I had in mind without any components. Dont care about the battery size or board model, I just found something to make a representation in tinkercad.

Screenshot_20230212_070307
Screenshot_20230212_0703071385×1089 77.5 KB

This is probably a noob question, but I am an electronics noob.

2

The idea sounds OK but please correct this
image

3

Ops, my bad. When you say OK, is there a better way to do it?

4

The Vin pin needs at least 7V.

5

I'm using a 5V battery connected to the NB 1500 VIN pin in the real-life circuit. The screenshot was only a representation created with the boards and batteries I could find on tinkercad.

6

Not on this board. It is not a Uno despite the picture of the "circuit"

7

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