https://devzone.nordicsemi.com/f/nordic-q-a/41759/nrf52-dongle-pinoutHi, According to the code in PCA10059.h: #define RX_PIN_NUMBER 11 #define TX_PIN_NUMBER 9 I would like to know what pins are related to number 9 and 11 in this schematic because I am a bit lost: Thank you very much for your help.en-USTelligent Community 13Thu, 20 Dec 2018 08:19:50 GMThttps://devzone.nordicsemi.com/thread/162608?ContentTypeID=1Thu, 20 Dec 2018 08:19:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b969545b-cfa2-44c7-90ce-c53c57a0faaaRabe<p>I am using SDK v15.0. As you said I can see there is no reference for RX and TX in v15.2. It&#39;s strange. Well, thanks for the info about P0.11 and P0.09.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/162557?ContentTypeID=1Wed, 19 Dec 2018 18:52:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c911ca52-3880-41b6-a417-dad61ba226d1jdts<p>PCA10059.h does not define RX_PIN_NUMBER or TX_PIN_NUMBER in SDK v15.2, which version are you using?</p> <p>Using PCA10056.h and a NRF52840_DK as&nbsp;reference, it seems that 11 is mapped to P0.11, 9 is mapped to P0.09.</p><div style="clear:both;"></div>