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:

"Manufacturer"	Model	Tested
Eurotronic	Comet Blue	✔️
Sygonix	HT100 BT	✔️
Xavax	Hama	❔
Silvercrest	RT2000BT	❔

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.

Parameter	required?	default value
mac	yes	None
pin	no	0
timeout	no	2

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:

Method	Parameter	Return Value
get_temperature	None	dict with 'currentTemp' 'manualTemp' 'targetTempLow' 'targetTempHigh' 'tempOffset' 'windowOpen' 'windowOpenMinutes'
set_temperature	dict with the same values as get_temperature. Not all values have to be set.	None
get_battery	None	int - Battery value in percent
get_datetime	None	datetime - currently set date and time of the device. Used for schedules
set_datetime	An optional datetime-object. The current date and time is used if the parameter is omitted.	None
get_weekday	A Weekday-Enum value eg. Weekday.MONDAY	dict with start# and end# (# = 1-4) keys and the time as HH:mm formatted strs as values
set_weekday	A Weekday-Enum value eg. Weekday.MONDAY and a dict containing start# and end# (# = 1-4) as keys and HH:mm formatted strs as values	None
get_holiday	int 1-8 to select the holiday period	dict with 'start': datetime 'end': datetime 'temperature': float
set_holiday	dict with the same values as get_holidays return value.	None
get_manual_mode	None	True if manual mode is set. False if the schedule is used
set_manual_mode	boolean - True if manual mode should be used. False if the schedule should be used	None
get_multiple	Retrieves multiple values specified in a list. Valid values are: 'temperature' 'battery' 'datetime' 'holiday#' # = 1-8 or 'holidays' (retrieves holiday1-8) 'monday' 'tuesday' etc... 'weekdays' (retrieves all weekdays)	The values as a dict in the format defined by the appropriate methods
discover	timeout: int, timeout used for discovery	MAC-addresses of all discovery Comet Blue devices

⚠️ 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