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    Examples of advanced control rules

    Troubleshooting
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    • G
      goranrad last edited by

      Hi, what I want is when the humidity (humidity sensor value) is under a level to have my humidifier (relay) to switch on for 10 sec then switch of for 30 sec until the humidity have reached its threshold.

      Think I have to use two UDItag for humidity sensor and relay state.
      Then use one variable with two keys. on time and off time.

      Humidity control in a greenhouse is difficult that's why i want to use variables to easily be able to adjust on and off intervals.

      Kindest regards
      Goran

      jkandasa 2 Replies Last reply Reply Quote 1
      • jkandasa
        jkandasa @goranrad last edited by

        @goranrad I will come up with a script shortly.

        B 1 Reply Last reply Reply Quote 0
        • B
          blacksheepinc @jkandasa last edited by

          @jkandasa I think in these cases blockly would be very useful.
          Have you tried Domoticz before? It has blockly, and making the above mentioned algorithems with it are such an easy job.

          jkandasa 1 Reply Last reply Reply Quote 0
          • jkandasa
            jkandasa @blacksheepinc last edited by

            @blacksheepinc No, I never tried Domoticz. Let me have a look. thank you

            1 Reply Last reply Reply Quote 0
            • jkandasa
              jkandasa @goranrad last edited by

              @goranrad For this kind of work execute the script with timer suits perfectly. Use the following script to control your humidity-controller. you can use the following script as an operation type (NOT condition type) and configure a timer to execute this script for every 40 seconds once.

              Note: do not forget to create UID tags for humidity and humidifier. 🙂

              import time
              
              humidity = mcApi.uidTag().getByUid("uid-humidity").getResource();
              humidifier = mcApi.uidTag().getByUid("uid-humidifier").getResource();
              
              humidity_threshold = 78.4
              on_time = 10 # seconds
              
              if(float(humidity.value) < humidity_threshold):
                humidifier.value = "1";
                mcApi.sensor().sendPayload(humidifier); # sensd state
                time.sleep(on_time)
                humidifier.value = "0";
                mcApi.sensor().sendPayload(humidifier); # sensd state
              

              0_1494903771553_humidity-controller.png

              1 Reply Last reply Reply Quote 0
              • G
                goranrad last edited by

                Thank you !

                1 Reply Last reply Reply Quote 0
                • G
                  goranrad last edited by

                  Hi again,

                  Sorry to disturb but I get the following error when i try to manually run the script.

                  {
                  "errorMessage": "AttributeError: 'org.mycontroller.standalone.db.tables.UidTag' object has no attribute 'getResource' in <script> at line number 3"
                  }

                  Sure I don't have to import mcAPI to python or something?

                  I have created the UDItags

                  Regards
                  Goran

                  jkandasa 1 Reply Last reply Reply Quote 0
                  • jkandasa
                    jkandasa @goranrad last edited by jkandasa

                    @goranrad
                    The error looks like, you do not create UID-Tag as follows,

                    0_1495025133044_upload-be870e3c-7d60-4786-a4cc-ef5b5b651505

                    Do you have installed python script engine? By default, MyController does not have python script engine as it is eating more resource. I would recommend going with JavaScript(built-in, lightweight).

                    Refer this link to install python script engine support.

                    If you want, I can convert this script to JavaScript

                    1 Reply Last reply Reply Quote 0
                    • G
                      goranrad last edited by

                      Hi, I have python installed and have created UDI tags,
                      0_1495031706178_python.png

                      and the UDIs are there
                      0_1495031740468_udi.png

                      Reason I use Python is because its the language I'm most comfortable with. But i'll do as you say if you pleas can convert the code to JavaScript to get me started.

                      Much appreciated.
                      /goran

                      jkandasa 1 Reply Last reply Reply Quote 0
                      • jkandasa
                        jkandasa @goranrad last edited by jkandasa

                        @goranrad You should use latest SNAPSHOT version from here: http://forum.mycontroller.org/topic/58/download-snapshot-build and these resources should have value.

                        I will convert this script to JavaScript by tomorrow and post here.

                        1 Reply Last reply Reply Quote 0
                        • G
                          goranrad last edited by goranrad

                          Hi J,
                          I did the update and the python script worked like a charm.
                          If you have time pleas post the JavaScript version.

                          Thank you!

                          jkandasa 1 Reply Last reply Reply Quote 0
                          • jkandasa
                            jkandasa @goranrad last edited by

                            @goranrad JavaScript,

                            var myImports = new JavaImporter(java.lang, java.util);
                            
                            with(myImports) {
                              var humidity_threshold = 78.4;
                              var on_time = 10; // seconds
                              humidity = mcApi.uidTag().getByUid("uid-humidity").getResource();
                              humidifier = mcApi.uidTag().getByUid("uid-humidifier").getResource();
                            
                              if(parseFloat(humidity.value) < humidity_threshold){
                                humidifier.value = "1";
                                mcApi.sensor().sendPayload(humidifier); // sensd state
                                Thread.sleep(on_time * 1000);
                                humidifier.value = "0";
                                mcApi.sensor().sendPayload(humidifier); // sensd state
                              }
                            }
                            
                            
                            1 Reply Last reply Reply Quote 0
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