https://devzone.nordicsemi.com/f/nordic-q-a/56013/how-to-view-uart-logs-while-debug-out-external-board-through-nrf52-dknRF52DK p20 debug out external board is 51822 + sensors I managed to connect the external board through p20 on the 52DK. I can successfully program the external board. I tried to view the uart logs through the 52DK. I connect the TX, RX of the externalen-USTelligent Community 13Sun, 29 Dec 2019 02:55:24 GMThttps://devzone.nordicsemi.com/thread/227004?ContentTypeID=1Sun, 29 Dec 2019 02:55:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:86b2560f-d612-40d5-81b5-aa6bf51c98d5kfcube<p>I have got this work - just connect rx tx it works fine. There were something wrong on my code that went wrong before enter into the uart part.</p><div style="clear:both;"></div>