README.md

ETEKCITY Smart Nutrition Scale

⚠️ Very much work in progress ⚠️

This is a potential project that tries to reverse engineer the BLE protocol that ETEKCITY Smart Nutrition Scale (ESN00) uses.

ETEKCITY Smart Nutrition Scale (ESN00) (DE | US)

BLE Protocol

This section describes the protocol (what was researched so far)

BLE Services & Characteristics

> Service: 00001910-0000-1000-8000-00805f9b34fb
>> Characteristic: 00002c10-0000-1000-8000-00805f9b34fb [READ]
>> Characteristic: 00002c11-0000-1000-8000-00805f9b34fb [WRITEWITHOUTRESPONSE, WRITE]
>> Characteristic: 00002c12-0000-1000-8000-00805f9b34fb [NOTIFY, INDICATE]
> Service: 0000180a-0000-1000-8000-00805f9b34fb
>> Characteristic: 00002a23-0000-1000-8000-00805f9b34fb [READ]
>> Characteristic: 00002a50-0000-1000-8000-00805f9b34fb [READ]
> Service: 00001800-0000-1000-8000-00805f9b34fb
>> Characteristic: 00002a00-0000-1000-8000-00805f9b34fb [READ]
>> Characteristic: 00002a01-0000-1000-8000-00805f9b34fb [READ]

Communication happens on service 0x1910, device to client communication happens on 0x2c12 characteristic and client to device communication on 0x2c12

Protocol

All packets have this structure

Packet

Structure: Data

Payload structure is defined in esn00-packet README