Python library and command line interface for Aranet Home sensors:

Installation

Install aranet4 and its dependencies:

pip3 install aranet4

Pair Aranet device
Run aranetctl or use as a library

Note: "Smart Home integrations" must be enabled in the Aranet Home mobile application for full support.

aranetctl usage

$ aranetctl -h
usage: aranetctl.py [-h] [--scan] [-u URL] [-r] [-s DATE] [-e DATE] [-o FILE] [-w] [-l COUNT] [--xt] [--xh] [--xp] [--xc] [--set-interval MINUTES]
                    [--set-integrations {on,off}] [--set-range {normal,extended}]
                    [device_mac]
positional arguments:
  device_mac            Aranet Bluetooth Address
options:
  -h, --help            show this help message and exit
  --scan                Scan for Aranet devices
  -r, --records         Fetch historical log records
Options for current reading:
  -u URL, --url URL     Remote url for current value push
Filter History Log Records:
  -s DATE, --start DATE
                        Records range start (UTC time, example: 2019-09-29T14:00:00
  -e DATE, --end DATE   Records range end (UTC time, example: 2019-09-30T14:00:00
  -o FILE, --output FILE
                        Save records to a file
  -w, --wait            Wait until new data point available
  -l COUNT, --last COUNT
                        Get <COUNT> last records
  --xt                  Don't get temperature records
  --xh                  Don't get humidity records
  --xp                  Don't get pressure records
  --xc                  Don't get co2 records
Change device settings:
  --set-interval MINUTES
                        Change update interval
  --set-integrations {on,off}
                        Toggle Smart Home Integrations
  --set-range {normal,extended}
                        Change bluetooth range

Scan devices

Usage: aranetctl --scan

Output:

=======================================
  Name:     Aranet4 00001
  Address:  AA:BB:CC:DD:EE:FF
  RSSI:     -83 dBm
---------------------------------------
  CO2:            484 ppm
  Temperature:    20.9 °C
  Humidity:       43 %
  Pressure:       1024.8 hPa
  Battery:        3 %
  Status Display: GREEN
  Age:            9/60

Note: To receive current measurements directly from the Bluetooth advertisement data, "Smart Home integrations" must be enabled and device firmware version must be v1.2.0 or newer.

Current Readings Example

Usage: aranetctl XX:XX:XX:XX:XX:XX

Output:

--------------------------------------
Connected: Aranet4 00000 | v0.3.1
Updated 51 s ago. Intervals: 60 s
5040 total readings
--------------------------------------
CO2:          904 ppm
Temperature:  19.9 C
Humidity:     51 %
Pressure:     997.0 hPa
Battery:      96 %
Status Display: GREEN
--------------------------------------

Get History Example

Write full log to screen:

Usage: aranetctl XX:XX:XX:XX:XX:XX -r

-------------------------------------------------------------
Device Name    :        Aranet4 00000
Device Version :               v0.3.1
-------------------------------------------------------------
 id  |        date         |  co2   | temp | hum | pressure |
-------------------------------------------------------------
   1 | 2022-02-18T14:15:44 |    844 | 21.8 |  50 |    985.6 |
   2 | 2022-02-18T14:20:44 |    846 | 21.8 |  50 |    985.9 |
   3 | 2022-02-18T14:25:44 |    843 | 22.0 |  50 |    986.4 |
   4 | 2022-02-18T14:30:44 |    881 | 22.1 |  50 |    986.4 |
   5 | 2022-02-18T14:35:44 |    854 | 22.1 |  50 |    987.3 |
   6 | 2022-02-18T14:40:44 |    867 | 22.2 |  50 |    987.5 |
   7 | 2022-02-18T14:45:44 |    883 | 22.1 |  50 |    988.1 |
   8 | 2022-02-18T14:50:44 |    921 | 22.1 |  50 |    988.6 |
   9 | 2022-02-18T14:55:44 |    930 | 22.0 |  50 |    989.1 |
  10 | 2022-02-18T15:00:44 |    954 | 22.0 |  50 |    989.5 |
-------------------------------------------------------------

Usage: aranetctl XX:XX:XX:XX:XX:XX -r -o aranet4.csv

Output file format: Date,CO2,Temperature,Humidity,Pressure

Output file example:

date,co2,temperature,humidity,pressure
2022-02-18 10:05:47,1398,23.2,53,986.6
2022-02-18 10:10:47,1155,23.1,50,986.3

Usage of library

Current Readings Example

import aranet4
device_mac = "XX:XX:XX:XX:XX:XX"
current = aranet4.client.get_current_readings(device_mac)
print("co2 reading:", current.co2)
print("Temperature:", current.temperature)
print("Humidity:", current.humidity)
print("Pressure:", current.pressure)

Logged Readings Example

import aranet4
device_mac = "XX:XX:XX:XX:XX:XX"
history = aranet4.client.get_all_records(
    device_mac, entry_filter={"humi": False, "pres": False}
)
print(f"{'Date':^20} | {'CO2':^10} | {'Temperature':^10} ")
for entry in history.value:
    print(f"{entry.date.isoformat():^20} | {entry.co2:^10} | {entry.temperature:^10}")

Library functions

get_current_readings(mac_address: str) -> client.CurrentReading

Get current measurements from device Returns CurrentReading object:

class CurrentReading:
    name: str = ""
    version: str = ""
    temperature: float = -1
    humidity: int = -1
    pressure: float = -1
    co2: int = -1
    battery: int = -1
    status: int = -1
    interval: int = -1
    ago: int = -1
    stored: int = -1

get_all_records(mac_address: str, entry_filter: dict) -> client.Record

Get stored datapoints from device. Apply any filters if required

entry_filter is a dictionary that can have the following values:

last: int : Get last n entries
start: datetime : Get entries after specified time
end: datetime : Get entries before specified time
temp: bool : Get temperature data points (default = True)
humi: bool : Get humidity data points (default = True)
pres: bool : Get pressure data points (default = True)
co2: bool : Get co2 data points (default = True)

Returns CurrentReading object:

class Record:
    name: str
    version: str
    records_on_device: int
    filter: Filter
    value: List[RecordItem] = field(default_factory=list)

Which includes these objects:

class RecordItem:
    date: datetime
    temperature: float
    humidity: int
    pressure: float
    co2: int
class Filter:
    begin: int
    end: int
    incl_temperature: bool
    incl_humidity: bool
    incl_pressure: bool
    incl_co2: bool