Domoticz

jvdz wrote: ↑Sunday 03 September 2017 20:31Not sure I understand the Domoticz automatic backup argument as I though that only takes care of the domoticz.db, the actual data for Domoticz?

As far as I can tell it also makes contains your blockly, lua and dzVents you've made inside Domoticz.

Blockly and LUA I knew when using the internal editor, so guess you also mean the DzVents script done with the internal Editor, as they are saved into the domoticz.db as well. I am using only the separate files in the LUA directory and those aren't backed up. Assume the same counts for when using DzVents scripts in the directory structure.

Jos

@jvdz I would like to use your script. However it is not very clear to me where to put the code.
It seems there are two blocks with "config"-code. Should I put all this in the crontab too, or should I put it somewhere else. ?

@curious, the filename is shown on line 4 of the script which shows the crontab schedule and shells file: /home/pi/domoticz/scripts/buienradar_rainprediction.lua
You basically can store it anywhere you like and make the change in the crontab line.

So all you need to do is :
1. Create a file called buienradar_rainprediction.lua
2. copy & paste the code into this file
3. Edit this section at the top and fill in your information: 4. Save the file
5. test the file by running it: lua buienradar_rainprediction.lua
6. start crontab and add a line like this: You should be in business. Just check BRP.log for issues.

Jos

@Jos

Thanks for your quick response. Seems to work, but no rain is expected tonight

Quick question: Why do I get this error in the log?

Error: EventSystem: in script_time_rain: [string "---------------------------------------------..."]:89: expected near 'local'

Thanks!

JB

You will have to show your complete script as it seems to have an issue with line 89.

Jos

Sorry Jos

Here it is:

Spoiler: show

----------------------------------------------------------------------------------------------------------------
-- IsItGonnaRain( int minutesinfuture)
-- returns: int avarage rainfall for the next minutesinfuture
--
-- Function to get rain prediction from Buienradar.nl (dutch)
--
-- http://gratisweerdata.buienradar.nl/#Buienradar You may use their free service for non-commercial purposes.
--
-- Written in LUA by Hans van der Heijden (h4nsie @ gmail.com)
-- Spring 2015
-- 14-11-2016 v0.4 changed lat/lon to max 2 decmals after comma
-- 28-03-2015 v0.3 bug: quotes around url added.
-- 27-03-2015 v0.2 return value is now average for next time
-- 26-03-2015 v0.1 Initial release
-- todo: some error checking on http and file handling (tmp file)
----------------------------------------------------------------------------------------------------------------
function IsItGonnaRain( minutesinfuture )
-- config ---------------------------------------------------------
lat='53.21' -- example lat/lon for
lon='5.27' -- NOTE: lat and lon should have max 2 decimals after comma to function (requirement Buienrader)
debug=false
tempfilename = '/var/tmp/rain.tmp' -- can be anywhere writeable
-- config ---------------------------------------------------------

-- url='http://gps.buienradar.nl/getrr.php?lat= ... lon='..lon
-- isn't working sice 2016/08/29: url is changed in:
url='http://gadgets.buienradar.nl/data/raint ... lon='..lon
if debug then print(url) end
read = os.execute('curl -s -o '..tempfilename..' "'..url..'"')
file = io.open(tempfilename, "r")
totalrain=0
rainlines=0
-- now analyse the received lines, format is like 000|15:30 per line.
while true do
line = file:read("*line")
if not line then break end
if debug then print('Line:'..line) end
linetime=string.sub(tostring(line), 5, 9)
if debug then print('Linetime: '..linetime) end

-- Linetime2 holds the full date calculated from the time on a line
linetime2 = os.time{year=os.date('%Y'), month=os.date('%m'), day=os.date('%d'), hour=string.sub(linetime,1,2), min=string.sub(linetime,4,5), sec=os.date('%S')}
difference = os.difftime (linetime2,os.time())

-- When a line entry has a time in the future AND is in the given range, then totalize the rainfall
if ((difference > 0) and (difference<=minutesinfuture*60)) then
if debug then print('Line in time range found') end
rain=tonumber(string.sub(tostring(line), 0, 3))
totalrain = totalrain+rain
rainlines=rainlines+1
if debug then print('Rain in timerange: '..rain) end
if debug then print('Total rain now: '..totalrain) end
end

end
file:close()

-- Returned value is average rain fall for next time
-- 0 is no rain, 255 is very heavy rain
-- When needed, mm/h is calculated by 10^((value -109)/32) (example: 77 = 0.1 mm/hour)
averagerain=totalrain/rainlines

return(averagerain)
end

commandArray = {}

time = os.date("*t")
if ((time.min % 15)==0) then

----- REGEN ------
minuten=20
regen = IsItGonnaRain(minuten)
print('Regen verwacht: '..regen..' mm binnen '..minuten..' minuten.')

if regen > 70 and otherdevices['Rain Expected']=='Off' then
commandArray['SendNotification']='Regenscript#Regen verwacht'
commandArray['Rain Expected']='On'
end
if regen == 0 and otherdevices['Rain Expected']=='On' then
commandArray['SendNotification']='Regenscript#Geen regen meer verwacht'
commandArray['Rain Expected']='Off'
end

end

return commandArray

local RainTextIDX = 121 -- your domoticz virtual TEXT device (add virtual text device first, if you didnt do this allready and use its idx)
debug = false -- enable or disable debug output
tempfilename = '/var/tmp/rain.tmp' -- be sure this is in the correct map, and give it chmod 0666
totalrain = 0
rainlines = 0

function IsItGonnaRain( minutesinfuture )
url='http://gadgets.buienradar.nl/data/raint ... 1&lon=5.27' -- NOTE: lat and lon should have max 2 decimals after comma to function (requirement Buienrader)
if debug then print(url) end
read = os.execute('curl -s -o '..tempfilename..' "'..url..'"')
file = io.open(tempfilename, "r")

while true do
line = file:read("*line")
if not line then break end
if debug then print('Line:'..line) end
linetime=string.sub(tostring(line), 5, 9)
if debug then print('Linetime: '..linetime) end

linetime2 = os.time{year=os.date('%Y'), month=os.date('%m'), day=os.date('%d'), hour=string.sub(linetime,1,2), min=string.sub(linetime,4,5), sec=os.date('%S')}
difference = os.difftime (linetime2,os.time())

if ((difference > 0) and (difference<=minutesinfuture*60)) then
if debug then print('Line in time range found') end
rain=tonumber(string.sub(tostring(line), 0, 3))
totalrain = totalrain+rain
rainlines=rainlines+1
if debug then print('Rain in timerange: '..rain) end
if debug then print('Total rain now: '..totalrain) end
end

end
file:close()

averagerain=totalrain/rainlines
return(averagerain)
end

function round(num, idp)
local mult = 10^(idp or 0)
return math.floor(num * mult + 0.5) / mult
end

commandArray = {}
minuten=30
RainPrediction = IsItGonnaRain(minuten)
RainmmHour=10^((RainPrediction-109)/32)

if (RainPrediction > 20 ) then
verw = 3
RainPredictionText=('('..round(RainmmHour, 1)..' mm) regen verwacht!')
else
verw = 2
RainPredictionText=('Voorlopig blijft het droog!')
end

commandArray[2] = {['UpdateDevice'] = RainTextIDX .. '|0|' .. tostring(RainPredictionText)}

return commandArray

I saved the script in the Domoticz Event system and set it as a LUA time script.

Looks like you have copied multiple scripts together and have an extra "return commandArray" on line 87. It also contains multiple commandArray = {} statements. Just group your Functions together at the top and put your logic together within the If as assume you want to do this only one time each 15 minutes?
EDIT: The script also contains 2 times the same function IsItGonnaRain(minutesinfuture) with different content!

Jos

After reading the wiki (http://www.domoticz.com/wiki/Is_it_gonna_rain) I thought that both scripts should be in one LUA script....

Now I have two scripts and it seems to work!

Thanks Jos!

You can merge them together when you want, but that means you need to modify the code so it will work as one.

Jos

Well I am not a star in modifying code , so lets leave it like this

Now I have been working again on this, and was going to use your script, Jos, but

6. start crontab and add a line like this:

*/5 * * * * sudo lua /home/pi/domoticz/scripts/buienradar_rainprediction.lua >> /var/tmp/BRP.log

Doesn't seem to work on Synology, And somehow the other scripts, won't work either

Any clue's?

What does the BRP.LOG tell you?
Does the same command work from the command prompt?

Jos

Doesn't tell anything. Doesn't run at all.

@DiskStation:/var/tmp# sudo lua /var/scripts/buienradar_rainprediction.lua >> /var/tmp/BRP.log
sudo: lua: command not found

It's clear, can't run lua from Synology terminal. Time to get another Pi..

or maybe just install LUA ?

Jos

Not sure if that is possible

Edit: Guess it can Just finished the downloading/installing of it. Now back to the movie

Btw. This is in the log file

http://gadgets.buienradar.nl/data/raint ... 6&lon=4.41
Rain in timerange: 0 Total rain now: 0 difference:180 Line:000|20:50
Rain in timerange: 0 Total rain now: 0 difference:480 Line:000|20:55
Rain in timerange: 57 Total rain now: 57 difference:780 Line:057|21:00
Sun Nov 5 20:47:20 2017 averagerain:19 calcmmh:0
http://192.168.0.10:8084/json.htm?type= ... svalue=0;0
1792
http://192.168.0.10:8084/json.htm?type= ... value=7.45
1792
==> Rain chance: 7.45%

Still not running from crontab

*/5 * * * * root sudo lua /var/scripts/buienradar_rainprediction.lua >> /var/tmp//BRP.log

Using the script as (for example) shown in this post: viewtopic.php?f=38&t=5903&p=155037&hili ... in#p148937 the 'DEVIDX' sensor is always filled with two numbers separated by a ';' and the two numbers are always equal. What's the purpose of that?

The content is described in the WiKi: https://www.domoticz.com/wiki/Domoticz_ ... L%27s#Rain

Jos

Thanks for your quick reply. In the meantime I figured out myself it has to do with this line: I did take a look at your wiki reference but I don't understand what the RAINCOUNTER value as shown on the wiki is supposed to mean.