This is simple python script, which scans Xiaomi BLE Temperature and Humidity sensors and publishes measurements to MQTT.
1.Install required packages:
sudo pip3 install bluepy
sudo pip3 install paho-mqtt
1.1.If you're using Ubuntu 20.04 on Raspberry Pi:
sudo apt-get install libglib2.0-dev pi-bluetooth
sudo pip3 install btlewrap
2.Clone code:
git clone https://github.com/algirdasc/xiaomi-ble-mqtt.git
cd xiaomi-ble-mqtt
3.Add crontab task. Task will be run every 5 minutes:
crontab -e
# Add row
*/5 * * * * /usr/bin/python3 <path to xiaomi-ble-mqtt>/data-read.py >> <path to xiaomi-ble-mqtt>/xiaomi-ble.log 2>&1
4.Rename mqtt.ini.sample to mqtt.ini and configure MQTT broker by editing mqtt.ini file.
5.Scan for available Xiaomi BLE devices:
sudo hcitool lescan
Look for line which looks like this:
4C:65:A8:D4:A3:1D MJ_HT_V1
5.Rename devices.ini.sample to devices.ini and configure Xiaomi devices by editing devices.ini file:
[room1]
device_mac=4C:65:A8:XX:XX:XX
topic=sensors/room1
availability_topic=sensors/room1/availability
average=3
retain=1
timeout=10
[room2]
device_mac=4C:65:A8:XX:XX:XX
topic=sensors/room2
etc...
MQTT Payload example:
{"temperature": 25.7, "humidity": 42.0, "battery": 100}