NRF52840-DK

[jeepermf1949]

I received my NRF52840-DK board, today, from Digi-key.  I followed directions in starting it up - power set to USB, switch to on.  When I turn it on, all LEDs flash and pressing buttons does not affect this.  Also, the BLE does not advertised itself.

Have I received a damaged board, or is there something I can do to "wake it up"?

[Einar Thorsrud]

Hi Michael,

I cannot say for sure if you have a damaged board or not, but based on what you write it seems more like a matter of which firmware is on it. You should have been able to control the LEDs via the buttons with the firmware the DK ships with, but something might have happened. Which version of the DK do you have - it is printed on a white sticker? I ask in case there was a batch which was programmed with a different firmware in production. By the way, which pattern does the LEDs blink in? That could help to see what firmware it uses.

Regarding Bluetooth, the DK does not ship with firmware that is Bluetooth enabled, so you need to program that yourself. You can for instance use the Heart rate monitor from here, or another example firmware from the SDK.

Einar