https://devzone.nordicsemi.com/f/nordic-q-a/55645/ble-uuidHi, I&#39;m trying to adapt the ble_gateway example for nRF91dk to use a nRF52 instead a Thingy52. When I change the UUID at ble.c from Thingy to nRF52, I&#39;m not able to get a connection with my UUID base from nRF52. I can only get connection if I searchen-USTelligent Community 13Wed, 18 Dec 2019 13:24:23 GMThttps://devzone.nordicsemi.com/thread/226154?ContentTypeID=1Wed, 18 Dec 2019 13:24:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:48cd75c2-8038-43fe-9eda-3975a74222e0Heidi<p>Hi!&nbsp;</p> <p></p> <p></p> [quote user=""]My nrf52 has this UUID.[/quote] <p>Is this a custom UUID? My guess is you&#39;re inputting the base UUID incorrectly so it can&#39;t find your device.</p> <p>Could you clarify how you got the following values</p> <p>&nbsp;<pre class="ui-code" data-mode="text">#define SENSOR_UUID_BASE {0xAA, 0xC2, 0x1B, 0x44, 0xDB, 0xA8, 0x1B, 0x96, 0xEE, 0x7F, 0x37, 0x57, 0x00, 0x00, 0x26, 0x2D} #define SENSOR_UUID_SERVICE 0x1620</pre></p> <p></p> <p>Best regards,</p> <p>Heidi</p><div style="clear:both;"></div>