CometBlue

eurotronic-cometblue is a library to communicate with your Eurotronic GmbH Comet Blue radiator controllers.

The device supports up to four programmable schedules for each weekday. Longer periods can be set as holidays. There are 8 holiday slots available.

This library depends on bleak and runs therefore on Linux, Windows and macOS (thanks to rikroe).

Compatible devices

Comet Blue radiator controllers are sold under different names:

This library should work with all listed radiator controllers, but is only tested with a Sygonix HT100BT which is the only one I own.

Thanks to @FloSchmidt for checking the Eurotronic Comet Blue

If your device is not listed here but looks similar (or you know it is a rebranded Comet Blue), or if you are able to test this library with another device - let me know your results.

Installation

Just

pip install eurotronic-cometblue

Usage

Import the library and instantiate an object.

Parameters are the device MAC-Address and the (optional) PIN. Depending on your connection quality you can specify a longer or shorter discovery duration.

from cometblue import CometBlue

blue = CometBlue(mac="00:00:00:00:00:00", pin=123456, timeout=2)

or

from cometblue import AsyncCometBlue

blue = AsyncCometBlue(mac="00:00:00:00:00:00", pin=123456, timeout=2)

for an asynchronous client.

The following (synchronous) methods are available, for the asynchronous variants add _async:

:warning: the device applies set values when the connection is closed, not directly after setting them

Examples

Use CometBlueAsync and [method_name]_async for asynchronous handling.

Instantiating and retrieving the current temperature

from cometblue import CometBlue

blue = CometBlue("00:00:00:00:00:00", 123456)
blue.connect()
temp = blue.get_temperature()
print(temp)
blue.disconnect()

or

from cometblue import CometBlue

with CometBlue("00:00:00:00:00:00", 123456) as blue:
    temp = blue.get_temperature()
    print(temp)

results in

{
    'currentTemp': 24.5,
    'manualTemp': 16.0,
    'targetTempLow': 16.0,
    'targetTempHigh': 20.0,
    'tempOffset': 0.0,
    'windowOpen': True,
    'windowOpenMinutes': 10
}

Setting a new schedule

Setting a new schedule for Mondays with two heating periods:

• Period 1 from 06:00 to 08:00

• Period 2 from 16:00 to 22:00

All unmentioned periods (periods 3 and 4) will be disabled (start and end set to 00:00).

Set periods will be consolidated, meaning setting only period 3 via this method will write period 1 and disable the others.

To use this schedule, make sure to disable manual mode.

blue.set_weekday(Weekday.MONDAY,
                 {"start1": "06:00", "end1": "08:00",
                  "start2": "16:00", "end2": "22:00"})
blue.set_manual_mode(False)

Setting a holiday

Setting a holiday (slot 2) from 26th December 2020 18:00 till 5th January 2021 14:00 and keep the temperature at 16.5 °C

blue.set_holiday(2, {"start": datetime(2020, 12, 26, 18),
                     "end": datetime(2021, 1, 5, 14),
                     "temperature": 16.5})

Credits:

• Thorsten Tränker for his reverse engineering work done here
• rikroe for the switch to bleak