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Eufy Smart Scale T9140
Eufy Smart Scale T9140 Product Page EufyLife (Vendor App)
Step 1: Read the general reverse engineer process
- [x] I have read the how to reverse engineer a Bluetooth 4.x wiki entry
Step 2: Acquiring some Bluetooth traffic Attach 3 log files with the corresponding true values, read here for further information.
- Bluetooth HCI Snoop log file user settings in the vendors app:
Sex: male
Body Height: 6'3"
Age: 30
Activity Level: N/A
measured true values in the vendors app for the 1. HCI Snoop log file:
Weight: 76.0 kg
Date: Sep 11 2021, 2:52 PM
BMI: 20.8
Body Fat %: 14.1%
Water: 62.7%
Muscle Mass %: 44.5%
Bome Mass %: 8.4%
BMR: 2857.6 kcal
Visceral Fat: 3.4
Lean Body Mass: 65.3 kg
Body Fat Mass: 10.7 kg
Bone Mass: 6.4 kg
Muscle Mass: 33.8 kg
--> Attach the 1. HCI Snoop log file here <-- hci_snoop_2021_09_11_14_52_23.cfa.zip
- Bluetooth HCI Snoop log file user settings in the vendors app:
Sex: male
Body Height: 6'3"
Age: 30
Activity Level: N/A
measured true values in the vendors app for the 2. HCI Snoop log file:
Weight: 79.9 kg
Date: Sep 11 2021, 3:53 PM
BMI: 21.9
Body Fat %: 16.4%
Water: 61.0%
Muscle Mass %: 43.5%
Bome Mass %: 8.4%
BMR: 2919.6 kcal
Visceral Fat: 4.9
Lean Body Mass: 66.8 kg
Body Fat Mass: 13.1 kg
Bone Mass: 6.7 kg
Muscle Mass: 34.8 kg
--> Attach the 2. HCI Snoop log file here <-- hci_snoop_2021_09_11_15_52_14.cfa.zip
- Bluetooth HCI Snoop log file user settings in the vendors app:
Sex: male
Body Height: 6'3"
Age: 30
Activity Level: N/A
measured true values in the vendors app for the 3. HCI Snoop log file:
Weight: 84.0 kg
Date: Sep 11 2021, 4:23 PM
BMI: 23.0
Body Fat %: 18.7%
Water: 59.4%
Muscle Mass %: 42.6%
Bone Mass %: 8.5%
BMR: 2984.8 kcal
Visceral Fat: 10.2
Lean Body Mass: 68.3 kg
Body Fat Mass: 15.7 kg
Bone Mass: 7.1 kg
Muscle Mass: 35.8 kg
--> Attach the 3. HCI Snoop log file here <-- hci_snoop_2021_09_11_16_22_11.cfa.zip
Step 3: Discover Bluetooth services and characteristic Read here how to create the openScale debug file
--> Attach the openScale debug log file here <-- openScale_2021-09-11_16-27.txt
I can add to this information, I did some reverse engineering a while back :) Didn't get around to look at the setup/initial connection process though.
Note that it also only measures weight and impedance on the scale itself, all the other metrics are calculated on the app or server side.
https://gist.github.com/particleflux/2a9b9255b07631989f2e7096b12c8485
Not sure if it's the same model, but I have T9146
openScale_2021-12-03_18-04.txt
Can't say I could find my weight anywhere. I did look for the following values:
True value | Hexadecimal |
---|---|
78.9 | 0315 |
40.4 | 0194 |
38.6 | 0182 |
21.9 | 00DB |
Are there any updates on this?
I have the T9147. I havent been able to get the snooping to work. But it shows up in the app saying its not supported. And I am able to see it with some details in my BLE Scan app (step 2)