cmcginty / pyweather

Bindings for Davis Vantage Pro and Pro2 weather stations, upload of weather data (e.g. wunderground.com, pwsweather.com), and meteorological calculation/conversion functions.

PyWeather

Abstract

PyWeather contains weather related modules implemented in Python. Anything weather related is fair game for PyWeather. Currently PyWeather is limited to unit conversion, console reading, and data publication. But, future work can be added to PyWeather in any area.

Unit Conversion

PyWeather has a lot of support for common unit conversions in distance, temperature, pressure, and volume. Conversion from Fahrenheit to Celsius, and kelvin is supported, as well as conversions between inches of mercury and millibars.

Station Observations

PyWeather also contains modules that are capable of downloading observations from weather consoles. The current list of supported weather consoles includes:

• Davis Vantage Pro
• Davis Vantage Pro2
• Netatmo weather station.

Data Publication

PyWeather contains a module that allows developers to post conditions to weather aggregation sites. The current list of support services includes:

• WeatherUnderground (wundgerground.com)
• PWS Weather (pwsweather.com)
• WeatherForYou (weatherforyou.com)

For additional information, please email the maintainer: [email protected]

Data Publication Script

scripts/weatherpub.py supports publication of the weather data. It can also serve as a good usage example.

General usage

1. Copy weatherpub.conf.example as weatehrpub.conf.
2. Modify weatehrpub.conf:
3. In [general] section set station to the name of the station you have.
4. Set publication to a comma-separated list of weather services you'd like to push data to.
5. Configure weather station and publication service in corresponding sections of the configuration file (see below for more details).
6. Run it: ./scripts/weatherpub.py -c scripts/weatherpub.conf

Weather stations

The script supports Vantage Pro and Netatmo. Vantage Pro support was not recently tested and may be broken by the latest update. Please report bugs and/or send pull requests.

Vantage Pro

By default script excepts Vantage Pro weather stations to be connected to //dev/ttyS0. Use --tty command-line flag to override it (this cannot be currently set via command-line), e.g. ./scripts/weatherpub.py -c scripts/weatherpub.conf --tty /dev/ttyS1

Netatmo

Since netatmo works via public API, some setup required first:

1. Create a Netatmo app.
2. Use generated app id and secret as client_id and client_secret.
3. Use your own Netatmo username (e-mail) as username and password.
4. Set module_name to your outdoor module name, e.g. 'Outdoor'.

Note: Rain Gauge and Anemometer are not supported yet.

Publication services

Only 3 publication service are currently supported. Out of them only PWS Weather was properly tested.

PWS Weather

1. Create PWS Weather profile.
2. Go to your dashboard and create a station.
3. In [pwsweather] section of the configuration file use your station id as site_id, and password from account you created at step 1 as password.

pyweather's Issues

Archive data is cleared on startup, without warning

PyWeather incorrectly assumes that archive data can be safely erased. There is no way to disable this through the API.

method `davis.VatagePro._dmpaft_cmd()` is returning always None

The following lines are trying compare bytes (ack) with a string self.ACK

PyWeather/weather/stations/davis.py

Lines 473 to 476 in 78fc2d5

	ack = self.port.read(len(self.ACK)) # read ACK
	log_raw('read', ack)
	if ack != self.ACK:
	return # if bad ack, return

Add PWSweather.com publishing service.

Feature request to enable PWSweather.com support.

Can't install from pip

So I realize there hasn't been a lot of activity on this project, but thought this might be solved by a quick upload. Right now there is an entry for weather on PyPi but no actual downloads listed.

Current workaround is to install using git+git://github.com/cmcginty/PyWeather but would love to see it installable via PyPi.

set console time programmatically

It should be appropriate to set the time of the console with the serial command SETTIME.
Similar to what was done in 2b32c0f

enhance option that defines measurement system to be used

It would be nice to have a flag option to switch between imperial and metric measurement system

Archive entry in fields is being overwritten with the latest value

PyWeather/weather/stations/davis.py

Lines 669 to 671 in 0f21aae

	# TODO: this will overwrite the last archived record with the newest record.
	# Is this the expected behavior?
	fields['Archive'] = self._get_new_archive_fields()

It should be possible to get all archive entries

VantagePro class encounter error when trying to encode bytes

The following line gives problems as it is trying to encode some bytes.

PyWeather/weather/stations/davis.py

Line 45 in 78fc2d5

log.debug(msg + ': ' + raw.encode('hex'))

`NoDeviceException` is always raised with the method `_cmd`.

PyWeather/weather/stations/davis.py

Line 445 in 78fc2d5

raise NoDeviceException('Can not access weather station')

Did the API change?

I've been running pyweather forever and it has just worked. Until now. I don't see anything wrong on my account but I am getting authentication error:

weatherpub.py.weather.services._base DEBUG - Connect to: http://weatherstation.wunderground.com
weatherpub.py.weather.services._base DEBUG - GET /weatherstation/updateweatherstation.php?dateutc=2022-09-22+13%3A58%3A05&softwaretype=PyWeather&tempf=66.4&windspeedmph=0&baromin=29.424&rainin=0.0&humidity=95&winddir=117&action=updateraw&dailyrainin=0.0&dewptf=64.8903366236&PASSWORD=XXXX&ID=KNHNASHU20
weatherpub.py.root WARNING - publisher Wunderground: Server returned invalid status: 401 Unauthorized unauthorized

I suspect the API or the endpoint changed?