https://devzone.nordicsemi.com/f/nordic-q-a/120426/nrf52840dk-as-a-debugger-fr-nrf52840dongle-socSo I have been doing a project on nrf52840dk, So I have built a custom bootloader for it as well, I have been trying to add the custom bootloader with the code in my nrf52840dongle using nrf52840dk (3.0.0). My nrf2840dl is not detecting the targeted boarden-USTelligent Community 13Tue, 08 Apr 2025 05:08:41 GMThttps://devzone.nordicsemi.com/thread/530924?ContentTypeID=1Tue, 08 Apr 2025 05:08:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f28c1a94-f3b7-495d-b57d-c267ed504e22Kazi Afroza Sultana<p>Hello,</p> <p><span>If you use the P20 connector, you need to connect the VTG pin to VDD on the nRF52840DK.</span></p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1744088645278v1.jpeg" alt=" " /></p> <p><span>if you use P19 connector you need to connect pin3 to GND.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/530482?ContentTypeID=1Thu, 03 Apr 2025 14:41:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8c71f530-fabd-4d3b-8b2e-ce6aa6143ba3Turbo J<p>Careful: The VDD pin is an input into the DK - it needs this as reference voltage.</p> <p>The SWD output plug is supposed to use a detection pin in order to auto-switch from the DK MCU to the externally connected one. They might be referenced in the hardware manual chapter for the debug out connector(s).</p><div style="clear:both;"></div>