Can you power a nano every off of the 5v out of another nano every? Wanted to ask before I tried.
If you connect 5V of the first Nano Every to the VIN of the second Nano Every and then connect 5V of the second Nano Every to the VIN of the first Nano Every, then they can power each other and you don't need an external power supply
ok. guess the next question is why would you connect both in a ring when one is getting powered by usb
Why to Vin and not to 5V?
5v is an output voltage. VIN is a pin for external power
The spec (Arduino Nano Every with headers — Arduino Official Store) states
VIN min-MAX 7-21V
So 5V into Vin will be outside the spec.
On the classic Nano you can feed 5V into the 5V pin. The power design of the Nano Every uses a different component and I don't know if there will be an issue when supply power to the 5V pin.
so you can disconnect usb and let them feed each other
may just develop a external power supply for my completed project. Just wanted to use it for testing purposes
How do you figure doing this is necessary?
Would be nice to let them feed each other without external power. Might get you rich.
But for facts: if you connect the 5V-pins to each other the supply-module of the one can feed them both. According the datasheet a Nano Every uses 50 mA for itself and can supply 950 mA from it's 5V-pin. Enough for another board and some extra cicuitry.
If the first board is powered by USB you'll get only 4.5 V from the 5V-pin, but your second board will work. The current that is allowed by USB standards is 200 mA, but usually a computer can supply 500 mA.
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