How can I power my Arduino Nano 33 IoT?

[runaway_pancake]

@omar9k

Supplying power at Vin would work for me but it means I'd need a 5-volt supply to run the step-down converter on the Nano board and then a 3.3-volt supply to run my off-board circuitry. I was hoping to have a simple design with only one voltage rail.

The 5V is sufficient to run the "IoT" and - provided all of your external circuitry is 3.3V and that current budget is not > 600mA - everything should be fine.

@sonofcy

Now tuning out, good luck.

Whatever happened to that?