intro

First

Youtube

https://www.youtube.com/watch?v=5b-Uw_ZU8VU Send/Receive data using BLE and MBED | BBC Microbit #2
https://www.youtube.com/watch?v=LEQO_9NVTpE The BBC micro:bit has a default Bluetooth profile which includes a range of "services". Access to the full set of extensive Bluetooth capabilities on the micro:bit is not currently available if you use the on-line code editors Blocks, Touch Develop or the one from Code Kingdom. No Bluetooth functionality is available from mico:python either. So if you want to exploit Bluetooth on your micro:bit beyond the small number of canned use cases supported by these code editors, it is recommended that you use ARM's mbed IDE. This video shows you how, explains the issues and the workarounds to those issues.