Domoticz

Spoiler: show

return {
active = true,
on = {
timer = {'every 2 minuteS'}
},

execute = function(domoticz)
-- Variables to customize ------------------------------------------------
local city = "Poznan" -- Your city for Wunderground API
local countryCode = "pl" -- Your country code for Wunderground API
local wuAPIkey = "xxxxxxxxxxxxx" -- Your Weather Underground API Key
local rainswitch1 = domoticz.devices('Rain-1-hour') -- The switch for rain in the next hour
local rainswitch24 = domoticz.devices('Rain-today') -- the switch for rain Today
local popDay = domoticz.devices('popday') -- The percentage virtual sensor
------------------------------------------------------------------------------------ pop24
--begin of the part to get hourly rain chances
json = (loadfile "/home/pi/domoticz/scripts/lua/JSON.lua")()
local linker1 = tostring('curl http://api.wunderground.com/api/' .. wuAPIkey .. '/hourly/q/' .. countryCode .. '/' .. city .. '.json')
local config=assert(io.popen(linker1))
local loc = config:read('*all')
config:close()
local jsonLocation = json:decode(loc)
local pop1 = tonumber(jsonLocation.hourly_forecast[1].pop)
popDay.updatePercentage(pop1)

if pop1 >= 30 and rainswitch1.state ~= 'On' --switch will be turned on if probability is higher than 30%
then rainswitch1.switchOn()
end

if pop1 < 30 and rainswitch1.state ~= 'Off' --if the probability is lower than 30% switch will be turned off
then
rainswitch1.switchOff()
end
--end of the part to get hourly rain chances
--begin of the part to get daily rain chances
local linker2 = tostring('curl http://api.wunderground.com/api/' .. wuAPIkey .. '/forecast/q/' .. countryCode .. '/' .. city .. '.json')
json = (loadfile "/home/pi/domoticz/scripts/lua/JSON.lua")()
local config=assert(io.popen(linker2))
local loc = config:read('*all')
config:close()
local jsonLocation = json:decode(loc)
local pop24 = tonumber(jsonLocation.forecast.txt_forecast.forecastday[1].pop)
if pop24 >= 30 and rainswitch24.state ~= 'On'
then rainswitch24.switchOn()
end
if pop24 < 30 and rainswitch24.state ~= 'Off'
then rainswitch24.switchOff()
end
end
}

elmortero wrote: ↑Tuesday 29 May 2018 20:46 Hi arek156

If you use the countrycode + citycode there are 2 results. WUnderground shows the 2 posible locations and no weather results.
Because of that the data you try to get is non-existing(nil)

With these changes it should be ok:
Replace ' .. countryCode .. '/' .. city .. '.json'
with
zmw:00000.168.12490.json' so that the it will result in :

'curl http://api.wunderground.com/api/' .. wuAPIkey .. '/forecast/q/zmw:00000.168.12490.json'

On the other hand, dzvents has given us better ways since the original post (thank you Dannybloe!!)

I include an adapted version of your script in order to use asynchonous http requests --> so domoticz does not get blocked/lagged if there is an issue with getting the data.
For this your dzvents version must be higher than 2.3

Spoiler: show

-- required:
-- 2 virtual switches: one for next hour prediction and one for Today prediction
-- 1 virtual sensor Percentage: for Probability Of precipitation
-- a weatherunderground API key. Instructions to get one are on the Domoticz Wiki
return {
active = true,
on = {
timer = {'every 1 minutes'}
},

execute = function(domoticz)
-- Variables to customize ------------------------------------------------
local wuAPIkey = "000000" -- Your Weather Underground API Key
local rainswitch1 = domoticz.devices('Rain-1-hour') -- The switch for rain in the next hour
local rainswitch24 = domoticz.devices('Rain-today') -- the switch for rain Today
local popDay = domoticz.devices('popday') -- The percentage virtual sensor
------------------------------------------------------------------------------------ pop24
--begin of the part to get hourly rain chances
json = (loadfile "/home/pi/domoticz/scripts/lua/JSON.lua")()
local linker1 = tostring('curl http://api.wunderground.com/api/' .. wuAPIkey .. '/forecast/q/zmw:00000.168.12490.json')
local config=assert(io.popen(linker1))
local loc = config:read('*all')
config:close()
local jsonLocation = json:decode(loc)
local pop1 = tonumber(jsonLocation.hourly_forecast[1].pop)
popDay.updatePercentage(pop1)

if pop1 >= 30 and rainswitch1.state ~= 'On' --switch will be turned on if probability is higher than 30%
then rainswitch1.switchOn()
end

if pop1 < 30 and rainswitch1.state ~= 'Off' --if the probability is lower than 30% switch will be turned off
then
rainswitch1.switchOff()
end
--end of the part to get hourly rain chances
--begin of the part to get daily rain chances
local linker2 = tostring('curl http://api.wunderground.com/api/' .. wuAPIkey .. '/forecast/q/' .. countryCode .. '/' .. city .. '.json')
json = (loadfile "/home/pi/domoticz/scripts/lua/JSON.lua")()
local config=assert(io.popen(linker2))
local loc = config:read('*all')
config:close()
local jsonLocation = json:decode(loc)
local pop24 = tonumber(jsonLocation.forecast.txt_forecast.forecastday[1].pop)
if pop24 >= 30 and rainswitch24.state ~= 'On'
then rainswitch24.switchOn()
end
if pop24 < 30 and rainswitch24.state ~= 'Off'
then rainswitch24.switchOff()
end
end
}