blexy

Simple OpenMetrics exporter for BLE devices.

Requirements

• device with BLE compliant transceiver (e.g. RPi 3+)
• Python 3.7+

Running

pip install blexy
blexy --port 8888 --config-file ~/.blexy.yaml

Endpoints

• / - returns list of connected devices in JSON format.
• /metrics - returns values read from connected BLE devices in OpenMetrics format.

Config

• Device & server configuration is by default expected to be placed in ./config.yaml.
• Custom config file path can be specified via -c / --config-file command line option.
• port and log_level can be either specified in config file or through command line options (see blexy -h for exact option names).

Example config file

Below file will make blexy connect to two Xiaomi temperature / humidity sensors and listen on port 8080:

port: 8080
log_level: info
ble:
  devices:
    - name: living room sensor
      model: LYWSD03MMC
      address: xx:xx:xx:xx:xx:xx
    - name: bedroom sensor
      model: LYWSD03MMC
      address: xx:xx:xx:xx:xx:xx

Example output

$ curl localhost:8080/metrics
# TYPE battery_level_percentage gauge
# UNIT battery_level_percentage percentage
battery_level_percentage_gauge{name="living room sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 77
battery_level_percentage_gauge{name="bedroom sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 88
# TYPE humidity_percentage gauge
# UNIT humidity_percentage percentage
humidity_percentage_gauge{name="living room sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 48
humidity_percentage_gauge{name="bedroom sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 51
# TYPE temperature_celsius gauge
# UNIT temperature_celsius celsius
temperature_celsius_gauge{name="living room sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 22.33
temperature_celsius_gauge{name="bedroom sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 25.11
# TYPE voltage_volts gauge
# UNIT voltage_volts volts
voltage_volts_gauge{name="living room sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 3.11
voltage_volts_gauge{name="bedroom sensor",model="LYWSD03MMC",manufacturer="Xiaomi",address="xx:xx:xx:xx:xx:xx",interface="0"} 3.03
# EOF

Supported devices

• LYWSD03MMC (Xiaomi)