Hi, i have a an arduino nano 33 iot that works perfectly when i plug it in the computer (it connects to wifi wery fast and works perfectly), but when i try to power it through another board or a breadboard power suply the built in led starts blincking and it no more connects to wifi.
What could it be?
What do you mean through another board?
You need to supply Vin with a voltage between 5 and 16V with a supply capable of providing at least 500mA
I mean for example powering it through the 5V of the bread board power supply module
Maybe it is your sketch? One thing might be a while(!Serial) in setup(). It will stop the progress of your setup() in its tracks.
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