How to read Variable from remote URL

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Is there anyway in Piratic to setup a device thats poll a URL (lets say) every 60seconds and reads the data that is coming back as json or something like that?
I have an arduino that is listening for commands via a web server and i don’t wan’t it to send some data automatically to pimatic but pimatic should read the data from that arduino actively.

Cheers
Christopher

Should be possible with a shellsensor device. as execution command you can use curl, maybe you need to sed/grep/awk the output first, depends on your output. then you are having the arduino output as variable and can use it in rules as you want to.

Need an example? Will have a look later then.
If you have trouble just post your command how you get the data and the complete output from the arduino.

@Christopher-täufert

maybe this thread will help.

https://forum.pimatic.org/topic/289/need-help-to-read-value-from-web/

here’s a example for a device

    {
      "id": "sonnenaufgang",
      "name": "Sonnenaufgang",
      "class": "ShellSensor",
      "attributeName": "time",
      "attributeType": "string",
      "attributeUnit": "",
      "command": "curl -s http://weather.yahooapis.com/forecastrss?w=xxxxxxxxxxxxxx|grep astronomy| awk -F\\\" '{print $2}'",
      "interval": 43200
    }

Thinking for some time now of a simple plugin for grabbing website data.

Something like

{
  "id": "pimatic-npm-version",
  "name": "NPM verison Pimatic",
  "class": "RegexWebsiteParser",
  "url": "https://www.npmjs.com/package/pimatic",
  "regex": ".*<strong>(.*)<\/strong>\n.*is the latest"
  "type": "string"
},

https://regex101.com/r/yY2fQ8/1

should be quite easy to write…

A regex website parser would be a nice and handy plugin
sure you could do it with a shellsensor, but maybe such a tool could be some easier to handle and even maybe a gui setup where you define what string you are searching for might be possible sometime
i would upvote it.
@thex what about copy & paste to the feature request area?

@leader21 done
https://forum.pimatic.org/topic/1696/regex-website-parser

should really be possible to write this in half a day or so

If you want to get many variables not only one you talk about json then you need a script that push the variable out what you need.

I’m an experienced web developer and i prefer php. The php catch the json file decode it and you can get an echo via an argv.
Via shell command you can get the data.

well i provide the variables over an arduino web server, i can create any output i want, but yes i would like to send 2 variables at one time to read them. I think its better then call the server 2 times to get each variable separately.
i think the shellsensor plugin with some command line tools should work for my system