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thiskevinwang / yunmai_protocol.txt
Created June 7, 2022 05:53 — forked from pwnall/yunmai_protocol.txt
Yunmai smart scale (M1301, M1302, M1303) Bluetooth LE protocol notes
Yunmai smart scale (M1301, M1302, M1303) Bluetooth LE protocol notes
Commands are written to GATT attribute 0xffe9 of service 0xffe5. Responses come
as value change notifications for GATT attribute 0xffe4 of service 0xffe0. These
are 16-bit Bluetooth LE UUIDs, so nnnn is 0000nnnn-0000-1000-8000-00805F9B34FB.
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Packet Structure