Noobie question: Non-USB power supply

makerdiary / nrf52840-mdk

An Open-Source, Micro Development Kit for IoT Applications using the nRF52840 SoC

https://wiki.makerdiary.com/nrf52840-mdk/

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Noobie question: Non-USB power supply #23

Closed 0x900C5649 closed 5 years ago

0x900C5649 commented 5 years ago

Hi,

I want to connect the nRF52840-mdk to a power suppy other than the usb-c connector. As I have fried other boards before I want to make sure I understand the documentation correctly.

Here's what I would do:

Connect the boards VIN to the something between +3.3V and +5.5V
Connect any of the boards GND to the corresponding GND

Is that correct?

Secondary question: What exactly are the exclamation marks in the pinout diagram indicating?

Thanks for the help

caizelin commented 5 years ago

@steffensky you are right. Just connect the VIN to the external power with +3.3V~5.5V. And connect the GNDs together. The exclamation marks mean that you should not operate the pins out of range. Hope it's helpful for you!

0x900C5649 commented 5 years ago

That helps. Thanks for the quick answer