https://devzone.nordicsemi.com/f/nordic-q-a/60904/nrf-connect-appAfter changing the Rx Charecteristics UUID, Nrf Connect App it is showing the LED BUTTON SERVICE. Why ? I want to write the hex data as previously.en-USTelligent Community 13Mon, 04 May 2020 09:19:36 GMThttps://devzone.nordicsemi.com/thread/247798?ContentTypeID=1Mon, 04 May 2020 09:19:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ead99295-3b93-431d-b2e3-0271776c315cKenneth<p>In ble_lbs.h you can find the UUID that the example use by default, I suggest that if you want to make you own application you change LBS_UUID_BASE to something else:</p> <p><pre class="ui-code" data-mode="c_cpp">// change these parameters #define LBS_UUID_BASE {0x23, 0xD1, 0xBC, 0xEA, 0x5F, 0x78, 0x23, 0x15, \ 0xDE, 0xEF, 0x12, 0x12, 0x00, 0x00, 0x00, 0x00} #define LBS_UUID_SERVICE 0x1523 #define LBS_UUID_BUTTON_CHAR 0x1524 #define LBS_UUID_LED_CHAR 0x1525 </pre></p><div style="clear:both;"></div>