Teardown of BLE Baubles
A quick look inside some $2 Bluetooth LE key finder tags. They are built around the BK3431 & ST17H26 ICs
I have background on these devices, datasheets and more details about what I found inside on my blog:
https://techobsessed.net/2019/07/2-bl...
Yeah, I misspelled "bauble" in the title sequence.