Vin and ARef unconnected

Hardware Nano Family Nano Every
1

(I hope this hasn't been asked 1000+ times. I can't find the answer if it has, possibly because it displays a lack of understanding. :roll_eyes:)

In the context of getting some PCBs made, onto which I'll be mounting a Nano Every:

Is there any benefit to tying ARef high or low if unused?

If the Nano is being powered with 5v (regulated) at Pin27, presumably Vin should be unconnected?

2

Connect it to Vcc, this will help keep noise out. I prefer Vin because of the additional filtering but that is my preference not a requirement.

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3

If you change your mind, and decide you want to use Aref, then it won't work if you have got it connected to GND.

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