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Examples of advanced control rules

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  • N Offline
    njbuch
    last edited by 7 Feb 2017, 18:02

    Hi, I am delving into a challenge of controlling the humidity in a room, the algorithm for that is quite complicated, meaning:

    1. Wait 15 minutes, and measure humidity, when its stable, start the fan
    2. Run fan for max 10 minutes and measure humidity while doing it, if falling humidity (until a threshold) keep running
    3. Repeat 1-2 until there is no falling humidity.
    4. Keep monitoring humidty every few minutes, and when over threshold, start with 1.

    Can you guide me to documentation for scripting this stuff....

    J 1 Reply Last reply 13 Feb 2017, 11:44 Reply Quote 0
    • J Offline
      jkandasa @njbuch
      last edited by 13 Feb 2017, 11:44

      @njbuch can you elaborate the requirement bit more? if can give pseudo code I can address it easily.

      1 Reply Last reply Reply Quote 0
      • N Offline
        njbuch
        last edited by 13 Feb 2017, 16:23

        I will try that, but was primarily looking for examples of scripts doing more advanced control stuff...

        1 Reply Last reply Reply Quote 0
        • G Offline
          goranrad
          last edited by 13 May 2017, 11:17

          I'm struggling with humidity in my greenhouse as well. Please help me with a python compare script example that reads a sensor value and a sensor state, then evaluates them and returns true or false. To be used as a compare script for a rule.

          Regards
          Goran

          J 1 Reply Last reply 14 May 2017, 08:53 Reply Quote 0
          • J Offline
            jkandasa @goranrad
            last edited by 14 May 2017, 08:53

            @goranrad can you elaborate more about steps you want in script?

            1 Reply Last reply Reply Quote 0
            • G Offline
              goranrad
              last edited by 14 May 2017, 09:25

              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

              J 2 Replies Last reply 15 May 2017, 08:14 Reply Quote 1
              • J Offline
                jkandasa @goranrad
                last edited by 15 May 2017, 08:14

                @goranrad I will come up with a script shortly.

                B 1 Reply Last reply 15 May 2017, 14:00 Reply Quote 0
                • B Offline
                  blacksheepinc @jkandasa
                  last edited by 15 May 2017, 14:00

                  @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.

                  J 1 Reply Last reply 15 May 2017, 15:37 Reply Quote 0
                  • J Offline
                    jkandasa @blacksheepinc
                    last edited by 15 May 2017, 15:37

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

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                    • J Offline
                      jkandasa @goranrad
                      last edited by 16 May 2017, 03:04

                      @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 Offline
                        goranrad
                        last edited by 16 May 2017, 18:12

                        Thank you !

                        1 Reply Last reply Reply Quote 0
                        • G Offline
                          goranrad
                          last edited by 16 May 2017, 18:59

                          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

                          J 1 Reply Last reply 17 May 2017, 12:43 Reply Quote 0
                          • J Offline
                            jkandasa @goranrad
                            last edited by jkandasa 17 May 2017, 12:43

                            @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 Offline
                              goranrad
                              last edited by 17 May 2017, 14:40

                              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

                              J 1 Reply Last reply 17 May 2017, 16:42 Reply Quote 0
                              • J Offline
                                jkandasa @goranrad
                                last edited by jkandasa 17 May 2017, 16:42

                                @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 Offline
                                  goranrad
                                  last edited by goranrad 17 May 2017, 21:12

                                  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!

                                  jkandasaJ 1 Reply Last reply 19 May 2017, 14:02 Reply Quote 0
                                  • jkandasaJ Offline
                                    jkandasa @goranrad
                                    last edited by 19 May 2017, 14:02

                                    @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
                                      }
                                    }
                                    
                                    
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