Belchertown Skin - display Units

[Xant]

Recently updated to WeatherFlow (and happy with it), which provides:

• Temperature
• Humidity
• Barometric Pressure
• Wind speed/direction
• Rainfall
• UV
• Solar Radiation
• Luminance *
  
• Lightning count/distance *

Was able to report Luminance through Belchertown Skin, but not yet able to display unit ("lux").

WeeWX.conf:

[WeatherFlowUDP]

    [[sensor_map]]

        lux = illuminance.SK-000XXXXX.obs_sky

    [[Defaults]]

        [[[Labels]]]

            [[[[Generic]]]]

                lux = Luminance

Belchertown skin.conf:

[Extras]

    station_observations = "barometer", "dewpoint", "outHumidity", "rainWithRainRate", "visibility", "cloudbase", "UV", "radiation", "lux"

[Units]

[[Groups]]

        group_lux          = lux

[[StringFormats]]

        lux                = %.0f

[[Lables]]

        lux               = " lux"

PS: interesting note regarding Brightness, Luminance & Confusion --> http://crompton.com/light/index.html

[vince]

Belchertown skin.conf:

[[Lables]]

        lux               = " lux"

You have 'Labels' spelled wrong :-)

[Armando Esteves]

Funny, but typo only on posting. It is correct at config files.

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[Pat]

Is this resolved? Have you added this new 'lux' observation to the known observation group dictionary?

Here's how you would do it for the lightning sensor's average distance. Change the values below to lux, and you'll need to find the relevant group for lux. 

weewx.units.obs_group_dict['avg_distance'] = 'group_distance'

On Monday, September 23, 2019 at 5:02:00 PM UTC-4, Xant wrote:

Funny, but typo only on posting. It is correct at config files.

On September 23, 2019 at 2:54 PM, vince (vince...@gmail.com) wrote:

Belchertown skin.conf:

[[Lables]]

lux = " lux"

You have 'Labels' spelled wrong :-)

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[Xant]

Pat

Later figured out that actually more complex than thought (instead of simple HTML display).

Will investigate further later on...

Thx,

Xant

[Xant]

After much time, I've done it!

The following is my "CookBook" step-by-step, as to add new Units Group to Dictionary:

Example, consider adding new Group "illuminance" with Unit 'lux' (lx), after adding 'illuminance' data to Extended Database.

1) Edit 'belchertown.py' or associated 'driverfile.py' file - according to your hardware - that will run upon weewx start (a driver file may makes sense, as it contains the Extension/data variable associated with the Unit)

% cd /usr/share/weewx/user
% nano driverfile.py

add the following (modifying accordingly to your new Group and Unit):

import weewx.units (might be already in file)
weewx.units.obs_group_dict['illuminance'] = 'group_illuminance'

weewx.units.USUnits['group_illuminance'] = 'lux'
weewx.units.MetricUnits['group_illuminance'] = 'lux'
weewx.units.MetricWXUnits['group_illuminance'] = 'lux'

weewx.units.default_unit_format_dict['lux'] = '%.0f'
weewx.units.default_unit_label_dict['lux'] = ' lx'

2) Edit 'weewx.conf' and 'skin.conf' adding new Group and Unit accordingly

3) Restart weewx


http://www.weewx.com/docs/customizing.htm#Creating_a_new_unit_group

Xant