Problems with pressure reading of Fine Offset WH2600
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Mathias Henrich
May 27, 2018, 1:32:22 AM5/27/18
to weewx-user
Hello
I tried to fiddle with the calculation settings in weewx.conf, but with no satisfactory result.
I get no "pressure" readings at all. In fact, it doesn't even show 'none', it isn't displayed at all. "altimeter" again shows the "abbsolute pressure" value from the station and "barometer" shows 'none'.
After tinkering with this problem for a while now, I think I could use some help:
As far as I've understood the doc, Fine Offset WH2600 only sends out its internal "absolute pressure" value as "pressure".
However, in my case, it seems to be read as "barometer".
The webui of the station gives me 979.1 hpa = 28,912806425 inhg.
My elevation is 330m, Sea Level Pressure in the area is about 1018 hpa = 30,0615227667 inhg.
This is the weewx reading:
REC: 2018-05-27 07:05:00 CEST (1527397500) altimeter: 28.9567352172, appTemp: 63.7873869349, barometer: 28.9139130435, cloudbase: 2154.09355477, dateTime: 1527397500.0, dewpoint: 56.9217391304, ET: 7.60231416402e-05, heatindex: 61.6130434783, humidex: 67.4951481531, inDewpoint: 59.6351757163, inHumidity: 65.0, inTemp: 72.0608695652, interval: 5, maxSolarRad: None, outHumidity: 84.5217391304, outTemp: 61.6130434783, pressure: 27.8431440258, radiation: 62.6534782609, rain: 0.0, rainRate: 0.0, txBatteryStatus: 0.0, usUnits: 1, UV: 1.0, windchill: 61.6130434783, windDir: None, windGust: 0.0, windGustDir: None, windrun: 0.133109903382, windSpeed: 0.0
I tried to fiddle with the calculation settings in weewx.conf, but with no satisfactory result.
If I set:
[StdWXCalculate] [[Calculations]] pressure = hardwareI use weewx version 3.8.0 with the interceptor driver.
I hope, somebody can help me to shed some light on the problem...
Mathias
$sudo wee_debug --info
Using verbosity=1, displaying most info
wee_debug output will be sent to stdout(console)
Using configuration file /etc/weewx/weewx.confUsing database binding 'wx_binding', which is bound to database 'archive_sqlite'
System info Platform: Linux-4.4.0-127-generic-x86_64-with-Ubuntu-16.04-xenial Python Version: 2.7.12
Load Information 1 minute load average: 0.11 5 minute load average: 0.10 15 minute load average: 0.09
General Weewx info Weewx version 3.8.0 detected.
Station info Station type: Interceptor Driver: user.interceptor
Driver info[Interceptor] # This section is for the network traffic interceptor driver.
# The driver to use: driver = user.interceptor
# Specify the hardware device to capture. Options include: # acurite-bridge - acurite internet bridge # observer - fine offset WH2600/HP1000/HP1003, aka 'observer' # lw30x - oregon scientific LW301/LW302 # lacrosse-bridge - lacrosse GW1000U/C84612 internet bridge device_type = observer port = 9090
Currently installed extensionsExtension Name Version Descriptioninterceptor 0.39 Capture weather data from HTTP requestsmqtt 0.17 Upload weather data to MQTT server.exfoliation 0.45 A minimalist layout with lots of data.
Archive info Database name: weewx.sdb Table name: archive Unit system: 1 (US) First good timestamp: 2018-05-24 16:15:00 CEST (1527171300) Last good timestamp: 2018-05-27 07:15:00 CEST (1527398100) Number of records: 751 weewx (weewx.conf) is set to use an archive interval of 300 seconds. The station hardware was not interrogated in determining archive interval.
Databases configured in weewx.conf Database name: weewx.sdb Database driver: weedb.sqlite
Database name: weewx Database driver: weedb.mysql Database host: localhost
Parsed and obfuscated weewx.conf# WEEWX CONFIGURATION FILE## Copyright (c) 2009-2015 Tom Keffer <tke...@gmail.com># See the file LICENSE.txt for your rights.
##############################################################################
# This section is for general configuration information.
# Set to 1 for extra debug info, otherwise comment it out or set to zerodebug = 0
# Root directory of the weewx data file hierarchy for this stationWEEWX_ROOT = /
# How long to wait before timing out a socket (FTP, HTTP) connectionsocket_timeout = 20
# Do not modify this. It is used when installing and updating weewx.version = 3.8.0
##############################################################################
# This section is for information about the station.
[Station]
# Description of the station location location = "Erfweiler-Ehlingen, Mandelbachtal, Saarland, Germany"
# Latitude and longitude in decimal degrees latitude = XXX obfuscated XXX longitude = XXX obfuscated XXX
# Altitude of the station, with unit it is in. This is downloaded from # from the station if the hardware supports it. altitude = 330, meter
# Set to type of station hardware. There must be a corresponding stanza # in this file with a 'driver' parameter indicating the driver to be used. station_type = Interceptor
# If you have a website, you may specify an URL #station_url = http://www.example.com
# The start of the rain year (1=January; 10=October, etc.). This is # downloaded from the station if the hardware supports it. rain_year_start = 1
# Start of week (0=Monday, 6=Sunday) week_start = 0
##############################################################################
[Simulator] # This section is for the weewx weather station simulator
# The time (in seconds) between LOOP packets. loop_interval = 2.5
# The simulator mode can be either 'simulator' or 'generator'. # Real-time simulator. Sleep between each LOOP packet. mode = simulator # Generator. Emit LOOP packets as fast as possible (useful for testing). #mode = generator
# The start time. Format is YYYY-mm-ddTHH:MM. If not specified, the default # is to use the present time. #start = 2011-01-01T00:00
# The driver to use: driver = weewx.drivers.simulator
##############################################################################
# This section is for uploading data to Internet sites
[StdRESTful]
[[StationRegistry]] # To register this weather station with weewx, set this to true register_this_station = false
[[AWEKAS]] # This section is for configuring posts to AWEKAS.
# If you wish to do this, set the option 'enable' to true, # and specify a username and password. enable = false username = XXX obfuscated by wee_debug XXX # To guard against parsing errors, put your password in quotes: password = XXX obfuscated by wee_debug XXX
[[CWOP]] # This section is for configuring posts to CWOP.
# If you wish to do this, set the option 'enable' to true, # and specify the station ID (e.g., CW1234). enable = false station = XXX obfuscated by wee_debug XXX
# If this is an APRS (radio amateur) station, uncomment # the following and replace with a passcode (e.g., 12345). #passcode = replace_me (APRS stations only)
[[PWSweather]] # This section is for configuring posts to PWSweather.com.
# If you wish to do this, set the option 'enable' to true, # and specify a station and password. enable = false station = XXX obfuscated by wee_debug XXX # To guard against parsing errors, put your password in quotes: password = XXX obfuscated by wee_debug XXX
[[WOW]] # This section is for configuring posts to WOW.
# If you wish to do this, set the option 'enable' to true, # and specify a station and password. enable = false station = XXX obfuscated by wee_debug XXX # To guard against parsing errors, put your password in quotes: password = XXX obfuscated by wee_debug XXX
[[Wunderground]] # This section is for configuring posts to the Weather Underground.
# If you wish to do this, set the option 'enable' to true, # and specify a station (e.g., 'KORHOODR3') and password. enable = true station = XXX obfuscated by wee_debug XXX # To guard against parsing errors, put your password in quotes: password = XXX obfuscated by wee_debug XXX
# Set the following to True to have weewx use the WU "Rapidfire" # protocol. Not all hardware can support it. See the User's Guide. rapidfire = true retry_login = 2 [[MQTT]] server_url = XXX obfuscated by wee_debug XXX topic = weather unit_system = METRIC binding = loop##############################################################################
# This section specifies what reports, using which skins, to generate.
[StdReport]
# Where the skins reside, relative to WEEWX_ROOT SKIN_ROOT = /etc/weewx/skins
# Where the generated reports should go, relative to WEEWX_ROOT HTML_ROOT = /var/www/html/weewx
# The database binding indicates which data should be used in reports. data_binding = wx_binding
# Each of the following subsections defines a report that will be run.
[[StandardReport]] # See the customizing guide to change the units, plot types and line # colors, modify the fonts, display additional sensor data, and other # customizations. Many of those changes can be made here by overriding # parameters, or by modifying templates within the skin itself.
# The StandardReport uses the 'Standard' skin, which contains the # images, templates and plots for the report. skin = Standard [[[Units]]] [[[[Groups]]]] group_altitude = meter group_speed2 = knot2 group_pressure = mbar group_rain = mm group_rainrate = mm_per_hour group_temperature = degree_C group_degree_day = degree_C_day group_speed = knot #[[exfoliation]] # HTML_ROOT = /var/www/html/weewx/exfoliation # skin = exfoliation
[[FTP]] # FTP'ing the results to a webserver is treated as just another report, # albeit one with an unusual report generator! skin = Ftp
# If you wish to use FTP, uncomment and fill out the next four lines. #user = replace with the ftp username #password = replace with the ftp password; put in quotes to guard against parsing errors. #server = replace with the ftp server name, e.g, www.threefools.org #path = replace with the ftp destination directory (e.g., /weather)
# Set to True for an FTP over TLS (FTPS) connection. Not all servers # support this. secure_ftp = False
# To upload files from something other than what HTML_ROOT is set # to above, specify a different HTML_ROOT here. #HTML_ROOT = /var/www/html/weewx
# Most FTP servers use port 21 port = 21
# Set to 1 to use passive mode, zero for active mode passive = 1
[[RSYNC]] # rsync'ing to a webserver is treated as just another report skin = Rsync
# If you wish to use rsync, you must configure passwordless ssh using # public/private key authentication from the user account that weewx # runs as to the user account on the remote machine where the files # will be copied. # # The following three lines determine where files will be sent. #server = replace with the rsync server name, e.g, www.threefools.org #path = replace with the rsync destination directory (e.g., /weather) #user = replace with the rsync username
# Rsync can be configured to remove files from the remote server if # they don't exist under HTML_ROOT locally. USE WITH CAUTION: if you # make a mistake in the remote path, you could could unintentionally # cause unrelated files to be deleted. Set to 1 to enable remote file # deletion, zero to allow files to accumulate remotely. delete = 0
##############################################################################
# This service acts as a filter, converting the unit system coming from# the hardware to a unit system in the database.
[StdConvert]
# The target_unit affects only the unit system in the database. Once # chosen it cannot be changed without converting the entire database. # Modification of target_unit after starting weewx will result in # corrupt data - the database will contain a mix of US and METRIC data. # # The value of target_unit does not affect the unit system for # reporting - reports can display US, Metric, or any combination of units. # # In most cases, target_unit should be left as the default: US # # In particular, those migrating from a standard wview installation # should use US since that is what the wview database contains.
# DO NOT MODIFY THIS VALUE UNLESS YOU KNOW WHAT YOU ARE DOING! target_unit = US # Options are 'US', 'METRICWX', or 'METRIC'
##############################################################################
# This section can adjust data using calibration expressions.
[StdCalibrate]
[[Corrections]] # For each type, an arbitrary calibration expression can be given. # It should be in the units defined in the StdConvert section. # Example: foo = foo + 0.2
##############################################################################
# This section is for quality control checks. If units are not specified,# values must be in the units defined in the StdConvert section.
[StdQC]
[[MinMax]] barometer = 26, 32.5, inHg outTemp = -40, 120, degree_F inTemp = 10, 120, degree_F outHumidity = 0, 100 inHumidity = 0, 100 windSpeed = 0, 120, mile_per_hour pressure = 24, 34.5, inHg
##############################################################################
# This section controls the origin of derived values.
[StdWXCalculate]
[[Calculations]] # Derived quantities are calculated by this service. Possible values are: # hardware - use the value provided by hardware # software - use the value calculated by weewx # prefer_hardware - use value provide by hardware if available, # otherwise use value calculated by weewx
pressure = prefer_hardware barometer = prefer_hardware altimeter = prefer_hardware windchill = prefer_hardware heatindex = prefer_hardware dewpoint = prefer_hardware inDewpoint = prefer_hardware rainRate = prefer_hardware
##############################################################################
# For hardware that supports it, this section controls how often the# onboard clock gets updated.
[StdTimeSynch]
# How often to check the weather station clock for drift (in seconds) clock_check = 14400
# How much it can drift before we will correct it (in seconds) max_drift = 5
##############################################################################
# This section is for configuring the archive service.
[StdArchive]
# If the station hardware supports data logging then the archive interval # will be downloaded from the station. Otherwise, specify it (in seconds). archive_interval = 300
# If possible, new archive records are downloaded from the station # hardware. If the hardware does not support this, then new archive # records will be generated in software. # Set the following to "software" to force software record generation. record_generation = hardware
# Whether to include LOOP data in hi/low statistics loop_hilo = True
# The data binding used to save archive records data_binding = wx_binding
##############################################################################
# This section binds a data store to a database.
[DataBindings]
[[wx_binding]] # The database must match one of the sections in [Databases]. # This is likely to be the only option you would want to change. database = archive_sqlite # The name of the table within the database table_name = archive # The manager handles aggregation of data for historical summaries manager = weewx.wxmanager.WXDaySummaryManager # The schema defines the structure of the database. # It is *only* used when the database is created. schema = schemas.wview.schema
##############################################################################
# This section defines various databases.
[Databases]
# A SQLite database is simply a single file [[archive_sqlite]] database_type = SQLite database_name = weewx.sdb
# MySQL [[archive_mysql]] database_type = MySQL database_name = weewx
##############################################################################
# This section defines defaults for the different types of databases.
[DatabaseTypes]
# Defaults for SQLite databases [[SQLite]] driver = weedb.sqlite # Directory in which the database files are located SQLITE_ROOT = /var/lib/weewx
# Defaults for MySQL databases [[MySQL]] driver = weedb.mysql # The host where the database is located host = localhost # The user name for logging in to the host user = XXX obfuscated by wee_debug XXX # The password for the user name. Put in quotes to guard against parsing errors. password = XXX obfuscated by wee_debug XXX
##############################################################################
# This section configures the internal weewx engine.
[Engine]
[[Services]] # This section specifies the services that should be run. They are # grouped by type, and the order of services within each group # determines the order in which the services will be run. prep_services = weewx.engine.StdTimeSynch data_services = , process_services = weewx.engine.StdConvert, weewx.engine.StdCalibrate, weewx.engine.StdQC, weewx.wxservices.StdWXCalculate archive_services = weewx.engine.StdArchive restful_services = weewx.restx.StdStationRegistry, weewx.restx.StdWunderground, weewx.restx.StdPWSweather, weewx.restx.StdCWOP, weewx.restx.StdWOW, weewx.restx.StdAWEKAS, user.mqtt.MQTT report_services = weewx.engine.StdPrint, weewx.engine.StdReport
##############################################################################
[Interceptor] # This section is for the network traffic interceptor driver.
# The driver to use: driver = user.interceptor
# Specify the hardware device to capture. Options include: # acurite-bridge - acurite internet bridge # observer - fine offset WH2600/HP1000/HP1003, aka 'observer' # lw30x - oregon scientific LW301/LW302 # lacrosse-bridge - lacrosse GW1000U/C84612 internet bridge device_type = observer port = 9090
wee_debug report successfully generated
Mathias Henrich
May 27, 2018, 2:33:50 AM5/27/18
to weewx-user
I resolved this by changing the mapping of "baromin" from "barometer" to "pressure" in my interceptor.py.
I filed an issue with the author on github.
mwall
May 27, 2018, 8:19:00 PM5/27/18
to weewx-user
On Sunday, May 27, 2018 at 2:33:50 AM UTC-4, Mathias Henrich wrote:
I resolved this by changing the mapping of "baromin" from "barometer" to "pressure" in my interceptor.py.I filed an issue with the author on github.
mathias,
according to the weather underground documentation, then value for 'baromin' should be 'barometric pressure inches'
however, the acurite stations send station pressure for 'baromin' when they upload to wu.
some fine offsets send sea level adjusted pressure for 'baromin' when they upload to wu (firmware 'Weather logger V2.1.9' in particular, although debugging that happened ages ago and i am not certain it was correctly resolved).
some fine offsets send absolute pressure, but as 'absbaro' or 'absbaromin' (those are not explicitly enumerated in the wu specification)
looks like we might have to have special cases for all the different fine offset firmware versions...
m
Joerg Reinisch
Mar 18, 2019, 1:22:28 PM3/18/19
to weewx-user
Now I have to write a few lines on this topic. I own a WH2600 and upload my weather data to weewx (3.9.1) and want to read the values. As a device driver I have the ObserverIp 0.1 driver.
Pretty much all values are displayed correctly, only the pressure is not displayed (N / A). If I read the data in the terminal, it will show, among other things: observerip: packet interval 1 Mar 18 17:45:28 pi-three weewx [3537]: engine: 2019-03-18 17:45:29 CET (1552927529) LOOP value 'pressure' 964.3 outside limits (25.100489375, 32.48298625) Mar 18 17:45:30 pi-three kernel: [335.011609] sunxi-bt bt: block state already is 0 Mar 18 17:45:34 pi-three weewx [3537]: cheetah generator: Generated 8 files for report SeasonsReport in 5.52 seconds Mar 18 17:45:34 pi-three weewx [3537]: manager: Daily summary version is 2.0 Mar 18 17:45:35 pi-three kernel: [340.018277] sunxi-bt bt: block state already is 0 Mar 18 17:45:40 pi-three kernel: [345.025664] sunxi-bt bt: block state already is 0 Mar 18 17:45:43 pi-three weewx [3537]: imagegenerator: Generated 57 images for SeasonsReport in 9.46 seconds Mar 18 17:45:43 pi-three weewx [3537]: copygenerator: copied 5 files to / var / www / html / weewx Mar 18 17:45:43 pi-three weewx [3537]: reportengine: Report 'SmartphoneReport' not enabled. Skipping. Mar 18 17:45:43 pi-three weewx [3537]: reportengine: Report 'MobileReport' not enabled. Skipping. Mar 18 17:45:43 pi-three weewx [3537]: reportengine: Report 'StandardReport' not enabled. Skipping. Mar 18 17:45:43 pi-three weewx [3537]: reportengine: Report 'FTP' not enabled. Skipping. Mar 18 17:45:43 pi-three weewx [3537]: reportengine: Report 'RSYNC' not enabled. Skipping.
So far so good.
At least I already know that the values of the pressure are set wrong and I have to change these values.
Until then, ALL values will be displayed in weewx.
But if I set the value in the weewx.conf so that the values should be correct, no data will be sent and displayed!
At least I already know that the values of the pressure are set wrong and I have to change these values.
Until then, ALL values will be displayed in weewx.
But if I set the value in the weewx.conf so that the values should be correct, no data will be sent and displayed!
The idea with the change in the observer driver I have already tried, at least I changed the values "barometer" and "baromin" accordingly. But still the mistakes still occur. Among other things, I have also noticed, as soon as I have set the values for printing correctly, weewx apparently freezes. I can not make a restart of weewx more and must restart my Raspi.
Which is also very strange: on the website: https://www.wunderground.com/personal-weather-station/dashboard?ID=IHEIDECK10 but the values are all displayed correctly. I can read the values aj correctly in the terminal, because someone knows maybe what I can do or change? I attach a debug file.
Best thanks ever
Jörg
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