https://devzone.nordicsemi.com/f/nordic-q-a/96812/filtering-advertisement-packets-using-uuidsHello everybody, I am working with a nRF52840 acting as a BLE central and I wan to scan (and connect) some specific peripherals. At first, I was using a whitelist; however, a new device for integration came and it was incompatible with this method ofen-USTelligent Community 13Tue, 21 Feb 2023 16:49:05 GMThttps://devzone.nordicsemi.com/thread/411184?ContentTypeID=1Tue, 21 Feb 2023 16:49:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f7d8d08b-196b-4638-a507-75f10299c1adDaniela_A<p>Hello Hung, <br /><br />You are totally right. I was scanning for both UUIDs with type set as BLE_UUID_TYPE_VENDOR_BEGIN. I fixed that and set the second UUID type as BLE_UUID_TYPE_VENDOR_BEGIN +1 and it works well <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span>.<br /><br />Thank you very much!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/410916?ContentTypeID=1Mon, 20 Feb 2023 13:50:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9a24f68f-c487-4fa9-884d-5ed3dc07e45eHung Bui<p>Hi Daniela,&nbsp;</p> <p>Could you show us how you setup the UUID to feed into&nbsp;nrf_ble_scan_filter_set() ?&nbsp;<br />Please note that if you have 2 UUIDs you would need to match the .type with&nbsp;what returned in&nbsp;sd_ble_uuid_vs_add() for each of them. They will not have the same value. Most likely the first one will have&nbsp;BLE_UUID_TYPE_VENDOR_BEGIN and the second one will have&nbsp;BLE_UUID_TYPE_VENDOR_BEGIN+1&nbsp;<br />This may explain why you only can scan for the first one you declare.&nbsp;</p><div style="clear:both;"></div>