BLE Localization , nrf52840DK to locate nrf52840 dongles , MESH , Direction Finding.

[AhmedElsabbagh]

Im new  using  Nordic devices , I am trying to using nrf52840DK to locate nrf52840 dongles using the direction finding method , how can I connect the dongles to the DK and build a Mesh , and whether will it detect real time movement of the dongles positioning ? what are the libraries that I may use for such a project ? how to start ?

any advises will be beneficial.
Thanks for your help.

[AhmedElsabbagh]

nrf52840DK doesn't support direction finding capabilities , is there a way to know/locate the dongles ?

Thanks

[Hung Bui]

You are right, nRF52840 DK doesn't support direction finding. 
Here are the list of products that support direction finding: https://www.nordicsemi.com/Products/Low-power-short-range-wireless/Direction-finding
But be aware that direction finding requires pretty complex hardware (antenna array) on at least one side of the communication. 

If you can give more information about your application I can try to give you. If you just want to have a rough estimation of the distant or just occupancy detection you can use RSSI instead of direction finding.