Hi Kevin,
In the graphs.conf file (Belchertown skin) I have this:
[[chart6]]
title = Lightning
[[[lightning_strike_count]]]
yAxis = 0
yAxis_min = 0
yAxis_tickInterval = 1
yAxis_label = "Number of Strikes"
stacking = normal
color = "orange"
lineWidth = 0
[[[[marker]]]]
enabled = true
radius = 4
[[[[states]]]]
[[[[[hover]]]]]
lineWidthPlus = 0
[[[lightning_distance]]]
yAxis = 1
yAxis_min = 0
yAxis_label = "Distance (miles)"
stacking = normal
color = "blue"
lineWidth = 0
[[[[marker]]]]
enabled = true
radius = 3
[[[[states]]]]
[[[[[hover]]]]]
lineWidthPlus = 0
For the distance correction (conversion to miles) I have an entry in the
StdCalibrate section of weewx.conf:
##############################################################################
# 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
outTemp = outTemp + 0.0
barometer = barometer + 1.025
radiation = luminosity * 0.00789 if luminosity > 0 else None
lightning_distance = lightning_distance / 1.609 if
lightning_strike_count > 0 else None #convert distance to miles
##############################################################################
On Sunday, June 11, 2023 at 3:36:30 PM UTC-5 Kevin Crivelli wrote:
Eric K, could you provide the chart.conf configuration for that chart and
also what ended up being the correct way to add the correction in
weewx.conf? Your chart is essentially what I am trying to accomplish
On Tuesday, May 25, 2021 at 12:36:09 PM UTC-4 Eric K wrote:
It's working as desired now!
Thanks for noticing the incorrect location of the [[Corrections]]
[image: lightning_distance working.JPG]
On Monday, May 24, 2021 at 7:39:25 AM UTC-5 gjr80 wrote:
I can't explain it, it would require some detailed knowledge of how the
Acurite lightning sensor behaves. For example, the Ecowitt lightning sensor
reports distance when strikes are detected and that distance value persists
for some time before eventually reporting 0. If you had debug logging of
the SDR output (as you have in the log extract above) going on for some
time previous you could probably work through the log looking at the
distance value being obtained by the SDR driver from the Acurite. One thing
is certain though, the SDR driver was not applying the correction as the
SDR driver contains no code to read those config settings. And if the
correction was not under [StdCalibrate] [[Corrections]] then WeeWX wasn't
applying the correction either.
Might just have to remain a mystery.
Gary
On Monday, 24 May 2021 at 07:33:56 UTC+10 Eric K wrote:
Thanks for the pointer.
I also had a [[Corrections]] sections under [StdCalibrate].
I just moved the lightning_distance correction to the [StdCalibrate]
section.
We'll see if that helps.
Isn't it odd that it worked, when the lightning_distance was something
other than 10?
On Sunday, May 23, 2021 at 3:10:54 PM UTC-5 gjr80 wrote:
I think you might find the [[Corrections]] stanza belongs under
[StdCalibrate] <http://weewx.com/docs/usersguide.htm#StdCalibrate> rather
than the SDR driver.
Gary
On Monday, 24 May 2021 at 02:32:14 UTC+10 Eric K wrote:
Here's a relevant section of the log which shows the Acurite Atlas
lightning sensor sending the last distance (10) reading over and over.
This is expected Acurite Atlas behavior, and the reason we have to put the
"if > 0 else None" statement in our [[Corrections]] section.
Referring back to the 5.64705882352941 value seen in my database:
I wonder if weewx isn't expecting a decimal reading to be in
lightning_distance?
And that sends it into confusion?
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.sdr: lines=['{"time"
: "2021-05-23 15:56:20", "model" : "Acurite-Atlas", "id" : 17, "channel" :
"A", "sequence_num" : 0, "battery_ok" : 1, "message_type" : 38,
"wind_avg_mi_h" : 4.000, "wind_dir_deg" : 190.000, "rain_in" : 2.040,
"strike_count" : 45, "strike_distance" : 10, "exception" : 0, "raw_msg" :
"c011668205f9cc8baab8"}\n', '{"time" : "2021-05-23 15:56:20", "model" :
"Acurite-Atlas", "id" : 17, "channel" : "A", "sequence_num" : 1,
"battery_ok" : 1, "message_type" : 38, "wind_avg_mi_h" : 4.000,
"wind_dir_deg" : 190.000, "rain_in" : 2.040, "strike_count" : 45,
"strike_distance" : 10, "exception" : 0, "raw_msg" :
"c411668205f9cc8baabc"}\n', '{"time" : "2021-05-23 15:56:20", "model" :
"Acurite-Atlas", "id" : 17, "channel" : "A", "sequence_num" : 2,
"battery_ok" : 1, "message_type" : 38, "wind_avg_mi_h" : 4.000,
"wind_dir_deg" : 190.000, "rain_in" : 2.040, "strike_count" : 45,
"strike_distance" : 10, "exception" : 0, "raw_msg" :
"c811668205f9cc8baac0"}\n']
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.sdr:
packet={'windSpeed': 4.0, 'windDir': 190.0, 'Atlas_rain_total': 2.04,
'Atlas_strike_count': 45, 'lightning_distance': 10, 'windBatteryStatus': 0,
'dateTime': 1621785380, 'usUnits': 1}
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.MQTTSubscribe:
(Service) data-> final packet is 2021-05-23 10:56:20 CDT (1621785380):
Atlas_rain_total: 2.04, Atlas_strike_count: 45, dateTime: 1621785380,
lightning_distance: 10, lightning_strike_count: 0, rain: 0.0, usUnits: 1,
windBatteryStatus: 0, windDir: 190.0, windSpeed: 4.0
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.sdr:
packet={'windSpeed': 4.0, 'windDir': 190.0, 'Atlas_rain_total': 2.04,
'Atlas_strike_count': 45, 'lightning_distance': 10, 'windBatteryStatus': 0,
'dateTime': 1621785380, 'usUnits': 1}
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.MQTTSubscribe:
(Service) data-> final packet is 2021-05-23 10:56:20 CDT (1621785380):
Atlas_rain_total: 2.04, Atlas_strike_count: 45, dateTime: 1621785380,
lightning_distance: 10, lightning_strike_count: 0, rain: 0.0, usUnits: 1,
windBatteryStatus: 0, windDir: 190.0, windSpeed: 4.0
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.sdr:
packet={'windSpeed': 4.0, 'windDir': 190.0, 'Atlas_rain_total': 2.04,
'Atlas_strike_count': 45, 'lightning_distance': 10, 'windBatteryStatus': 0,
'dateTime': 1621785380, 'usUnits': 1}
May 23 10:56:24 Ubuntu20-WEEWX weewx[14069] DEBUG user.MQTTSubscribe:
(Service) data-> final packet is 2021-05-23 10:56:20 CDT (1621785380):
Atlas_rain_total: 2.04, Atlas_strike_count: 45, dateTime: 1621785380,
lightning_distance: 10, lightning_strike_count: 0, rain: 0.0, usUnits: 1,
windBatteryStatus: 0, windDir: 190.0, windSpeed: 4.0
May 23 10:56:27 Ubuntu20-WEEWX weewx[14069] DEBUG user.sdr: lines=[]
May 23 10:56:29 Ubuntu20-WEEWX weewx[14069] DEBUG user.MQTTSubscribe:
(Service) MessageCallbackProvider data-> incoming topic:
tele/BMP280/SENSOR, QOS: 0, retain: 0, payload:
b'{"Time":"2021-05-23T10:56:30","BMP280":{"Temperature":20.2,"Pressure":985.1},"PressureUnit":"hPa","TempUnit":"C"}'
May 23 10:56:29 Ubuntu20-WEEWX weewx[14069] DEBUG user.MQTTSubscribe:
(Service) TopicManager data-> incoming tele/BMP280/SENSOR: appTemp1: 20.2,
barometer: 985.1
On Sunday, May 23, 2021 at 11:19:26 AM UTC-5 Eric K wrote:
I am seeing a weird problem with the lightning distance value, where the
distance gets stuck reporting 10!
I copied the [[Corrections]] scheme shown earlier in this thread.
I'm pretty sure I got it right, because it works most of the time.
##############################################################################
[SDR]
# This section is for the software-defined radio driver.
# collect data from Acurite Atlas sensor
# The driver to use
driver = user.sdr
cmd = rtl_433 -R 40 -M utc -F json
[[sensor_map]]
outTemp = temperature.0011.AcuriteAtlasPacket
outHumidity = humidity.0011.AcuriteAtlasPacket
windSpeed = wind_speed.0011.AcuriteAtlasPacket
windDir = wind_dir.0011.AcuriteAtlasPacket
UV = uv.0011.AcuriteAtlasPacket
luminosity = lux.0011.AcuriteAtlasPacket
Atlas_rain_total = rain_total.0011.AcuriteAtlasPacket
Atlas_strike_count = strike_count.0011.AcuriteAtlasPacket
lightning_distance = strike_distance.0011.AcuriteAtlasPacket
windBatteryStatus = battery.0011.AcuriteAtlasPacket
[[deltas]]
rain = Atlas_rain_total
lightning_strike_count = Atlas_strike_count
[[Corrections]]
lightning_distance = lightning_distance if lightning_strike_count >
0 else None
##############################################################################
But, I've now seen several storms with lightning and and the
lightinig_distance value gets stuck reporting 10 forever after!
I see the 10 repeating in the database, so I believe that weewx is
generating that number and sending it into the database.
Here's a look in the database using DB Browser for SQLite.
Note how a distance value of 5.64705882352941 from the Acurite Atlas
appears and then it's 10 thereafter.
You can see the lightning_strike_count is zero.
The "else None" part of the condition statement appears to stop working?
[image: ksnip_20210523-111132.png]
On Thursday, July 23, 2020 at 5:55:55 AM UTC-5 tarob...@gmail.com wrote:
Thank you for the detailed explanation Gary! I have added the [Accumulator]
section to my weewx.conf for lightning_strike_count -> extractor = sum and
lightning_distance -> extractor = min. Now to wait for another storm.
-Troy
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