mi-scale-2

Get Xiaomi Mi Smart Scale 2 weight, notify on telegram, preserve the history and present it using graphs as a webpage

Tested only on Raspberry Pi 2 + Mi Scale 2 + USB Bluetooth dongle

Requirements

• root permission for bluepy.btle

sudo pip install -r requirements.txt

Usage

always run with sudo or from root:

cp .env.dist .env
vim .env
sudo ./start.sh
# sudo ./start.sh --help
# sudo ./start.sh --loglevel=DEBUG

Autostart

sudo cp mi-scale-2.service /etc/systemd/system/
sudo systemctl enable mi-scale-2
sudo systemctl start mi-scale-2

Help

get dev mac address:

sudo hcitool lescan

if u have troubleshoots, try restart u bluetooth/adapter

sudo hciconfig hci0 reset
sudo invoke-rc.d bluetooth restart

Reverse Engineering RAW Schema for Mi Scale 2

!!! slightly different than from openScale wiki !!!

byte 0:

• 0 bit - unknown
• 1 bit - unit kg
• 2 bit - unit lbs
• 3 bit - unknown
• 4 bit - jin (chinese catty) unit
• 5 bit - stabilized
• 6 bit - unknown
• 7 bit - weight removed

byte 1-2:

• weight (little endian)

Links

• https://github.com/oliexdev/openScale/wiki/Xiaomi-Bluetooth-Mi-Scale