Comment by ChrisMarshallNY

I wrote up this series, a few years ago[0]. It was actually #1 on HN for a day, but is probably a bit "dated," now.

I did do an actual video tutorial on it for try!Swift[1].

[0] https://littlegreenviper.com/series/bluetooth/

[1] https://github.com/ChrisMarshallNY/ITCB-master