NRF52840 dongle USB bootloader with external power supply

[scttnlsn]

In section 6.3.2 of the NRF52840 dongle user guide it describes how to modify the board for use with an external, regulated power supply.  Once those modifications are made to the board, is it still programmable using the USB bootloader (with or without the external supply connected)?

[ketiljo]

Yes, you can still use the USB interface, but you must power the dongle from the external power supply.

[smangold]

Hi, thanks for this information. I find the USB Dongle extremely useful, but wasn't sure about programming it once it is connected to external supply. Very helpful!!