https://devzone.nordicsemi.com/f/nordic-q-a/23547/changing-removing-ble-services-erase-and-flashSo I&#39;m basing this off of the ble_app_hrs that initially has heart rates service and battery service. I want to create my own custom service andcopied the project to use as my template. The first thing I did was to remove hrs and make a bas only serviceen-USTelligent Community 13Mon, 24 Jul 2017 08:42:53 GMThttps://devzone.nordicsemi.com/thread/92492?ContentTypeID=1Mon, 24 Jul 2017 08:42:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cc6e0881-cb57-4767-84f3-91740f1dececbjorn-spockeli<p>Ok, so you added the characteristic UUID using sd_ble_uuid_vs_add(), but you did not pass it to sd_ble_gatts_characteristic_add?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/92491?ContentTypeID=1Fri, 21 Jul 2017 23:53:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:35a5178c-023f-42f1-bd19-5cd6d7298143Dan<p>sd_ble_uuid_vs_add is in the init function. I believe that was the example I had looked at. The issue was it was using the new uuid but at a later point in time it wasn&#39;t being used.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/92493?ContentTypeID=1Mon, 17 Jul 2017 09:19:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:59cb6bd3-2e08-410a-b070-578b4f506d4fbjorn-spockeli<p>Have you added the custom UUID using <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v4.0.2/group___b_l_e___c_o_m_m_o_n___f_u_n_c_t_i_o_n_s.html#ga265b4251110a15120d0aa97e5152163b">sd_ble_uuid_vs_add()</a> ? I suggest that you take a look at <a href="https://github.com/bjornspockeli/custom_ble_service_example">this</a> custom service tutorial</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/92494?ContentTypeID=1Mon, 17 Jul 2017 01:03:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d8b3cbcb-6796-42a4-a3ce-b82b2d31648eDan<p>Well after a night&#39;s rest I came back and I think I at least solved the issue on why it was giving me junk data. I think the characteristics weren&#39;t resetting properly but if I unplugged and let it power off, it worked fine. Still confused as to why my custom uuid isn&#39;t defined for the custom characteristic but still the default.</p><div style="clear:both;"></div>