https://devzone.nordicsemi.com/f/nordic-q-a/65756/connect-external-custom-board-to-nrf52-dk-for-debuggingHello, I&#39;m pretty to new to developing with the NRF52 and the NRF52-DK and have a couple of questions. I have a custom board which has an integrated NRF52832 chip. Now I need to connect the custom board to the NRF52-DK to program and debug the externalen-USTelligent Community 13Thu, 10 Sep 2020 12:21:38 GMThttps://devzone.nordicsemi.com/thread/268971?ContentTypeID=1Thu, 10 Sep 2020 12:21:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f56ee42c-da67-4402-9442-2cb3f4e9ec7cSimonr<p>Hi</p> <p>Please check out the <a href="https://infocenter.nordicsemi.com/pdf/nRF52_DK_User_Guide_v1.3.1.pdf">nRF52 User Guide</a>. Section&nbsp;<strong>6.10 Debug output&nbsp;</strong>describes in detail how to use the nRF52 DK to program and debug external boards.&nbsp;</p> <p>1. Yes, you can use the Debug Out (P19) for programming purposes. Keep in mind that your external board will need to be powered by some other source as a 10 Pin debugging cable won&#39;t power devices. by itself.</p> <p>2. VCC, SWDIO, SWDCLK, GND pins, GNDDetect, and nRESET have to be connected like this to the 10-pin debug cable.</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-200743b7ac564032bccca78b6ab5734a/pastedimage1599740160496v1.png" alt=" " /></p> <p>3. Yes, it can be powered from the DK, but not by the 10-pin debug cable.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>