I have a simple question. My Arduino Nano 33 BLE is build in a case. So, when it is powered on i cannot see it. I like to have an external led that indicates that the board is powered ON. Wich voltagepin is the best to use?. I have read that when 5v pin is needed then you have to bridge 2 pads to…

[image] marcnh33: I like to use the 3.3v output for the external led. But, is that possible? Do i have to connect the led directly? Or do i have to add a resistor in line between the 3.3v and the led ?? Yes, its possible. No. Yes, 330 ohm would work real good.

Arduino Nano 33 BLE External power led indicator

Official Hardware Nano Family Nano 33 BLE

Idahowalker September 21, 2021, 11:52am 4

Yes.

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Arduino Nano 33 BLE External power led indicator

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