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    AC/Heatpump control

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    airconheatpumpscript
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    • K Offline
      ksga
      last edited by

      Hi.
      I've just moved from Domoticz to MC, and so far I'm a happy chappy 🙂

      On domo I was controlling my heatpump/AC unit using Toni's setup, slightly altered to allow for my Panasonic inverter.
      I used his LUA script to calculate the needed codes to send to the AC.

      Now I'm trying to make the thing work on MC...

      I can send fixed commands, using the RAW feature, but I'm stuck trying to figure out a smart way of doing it on MC.

      Somehow I need to make the state of "Heatpump Mode (including ON/OFF)", "Fan Speed" and "Temperature Setting" work together to generate an eight digit code that will be send to the AC node when one of the parameters update.

      Any pointers (or solutions 😉 )

      Thanks 😄

      jkandasaJ 1 Reply Last reply Reply Quote 0
      • jkandasaJ Offline
        jkandasa @ksga
        last edited by

        @ksga Thanks to showing interest with MyController. Can you post your program logic? We can create JavaScript and execute your logic 🙂

        K 1 Reply Last reply Reply Quote 0
        • K Offline
          ksga
          last edited by ksga

          Sure @jkandasa
          The LUA script that Toni wrote looks like this:

          -- These are the configuration variables, set them according to your system
          modelCmd = '0'        -- Panasonic CKP, see https://github.com/mysensors/Arduino/blob/development/libraries/MySensors/examples/HeatpumpIRController/HeatpumpIRController.ino#L68
          textDev = 'IR data'   -- Name of the 'IR data' MySensors device
          irSendDev = 'IR send' -- Name of the 'IR send' MySensors device
          
          
          commandArray = {}
          
          
          for key, value in pairs(devicechanged) do
            if (key == 'Heatpump Mode' or key == 'Heatpump Fan Speed' or key == 'Heatpump Temperature') then
          
              mode = otherdevices['Heatpump Mode']
              fanSpeed = otherdevices['Heatpump Fan Speed']
              temperature = math.floor(otherdevices_svalues['Heatpump Temperature'])
          
              if     (mode == 'Off')   then powerModeCmd = '00'
              elseif (mode == 'Auto')  then powerModeCmd = '11'
              elseif (mode == 'Heat')  then powerModeCmd = '12'
              elseif (mode == 'Cool')  then powerModeCmd = '13'
              elseif (mode == 'Dry')   then powerModeCmd = '14'
              elseif (mode == 'Fan')   then powerModeCmd = '15'
              elseif (mode == 'Maint') then powerModeCmd = '16'
              end
          
              if     (fanSpeed == 'Auto')  then fanSpeedCmd = '0'
              elseif (fanSpeed == 'Fan 1') then fanSpeedCmd = '1'
              elseif (fanSpeed == 'Fan 2') then fanSpeedCmd = '2'
              elseif (fanSpeed == 'Fan 3') then fanSpeedCmd = '3'
              elseif (fanSpeed == 'Fan 4') then fanSpeedCmd = '4'
              elseif (fanSpeed == 'Fan 5') then fanSpeedCmd = '5'
              end
          
              temperatureCmd = string.format("%02x", temperature)
          
              modeCmd = '00' .. modelCmd .. powerModeCmd .. fanSpeedCmd .. temperatureCmd
          
              print(string.format('Mode: %s, fan: %s, temp: %s, modeCmd: %s', mode, fanSpeed, temperature, modeCmd))
          
              commandArray['UpdateDevice'] = otherdevices_idx[textDev] .. '|0|' .. modeCmd
              commandArray['IR send'] = 'On'
          
            end
          end
          
          return commandArray
          

          The code will generate an eight digit code looking something like this:
          12345678
          Position 1+2: Always "00", double zero
          Position 3: Model code - in my case "4" - refers to Arduino sketch
          Position 4+5: Power mode - for example "11" - Auto mode
          Position 6: Fan speed - for example "3" - speed 3
          Position 7+8: Temperature in hex - for example "18" - 24 degrees

          Above would result in the string: 00411318 - Auto mode, Fan speed 3, 24 degrees 🙂

          The mode, fanSpeed and temperature variables defined in the first section refers to the dummy devices that were needed on Domoticz

          1 Reply Last reply Reply Quote 0
          • K Offline
            ksga @jkandasa
            last edited by

            Hi @jkandasa
            I don't want to put any pressure on you or anything like that - I'm very grateful for all your hard work that has gone into this project - which ROCKS btw 🙂

            But - was my above info useful, or was it insufficient to explain the issue?

            jkandasaJ 1 Reply Last reply Reply Quote 0
            • jkandasaJ Offline
              jkandasa @ksga
              last edited by jkandasa

              @ksga Sorry for the delay response,

              JavaScript code for the above LUA script,

              //Get sensor values with UID Tags
              var mode =  mcApi.uidTag().getByUid("hp-mode").getResource().getValue(); //Heatpump Mode
              var fanSpeed = mcApi.uidTag().getByUid("hp-fs").getResource().getValue(); //Heatpump Fan Speed
              var temperature = parseInt(mcApi.uidTag().getByUid("hp-temperature").getResource().getValue()).toFixed(0); //Heatpump Temperature
              
              var modelCmd = '0'; //Default
              var powerModeCmd = "00"; //Default value
              var fanSpeedCmd = "0"; //Default value
              
              //Update mode
              if (mode == 'off'){
                powerModeCmd = '00';
              }else if (mode == 'Auto'){
                powerModeCmd = '11';
              }else if (mode == 'Heat'){
                powerModeCmd = '12';
              }else if (mode == 'Cool'){
                powerModeCmd = '13';
              }else if (mode == 'Dry'){
                powerModeCmd = '14';
              }else if (mode == 'Fan'){
                powerModeCmd = '15';
              }else if (mode == 'Maint'){
                powerModeCmd = '16';
              }
              
              //Update Fan speed
              if (fanSpeed == 'Auto'){
                fanSpeedCmd = '0';
              }else if (fanSpeed == 'Fan 1'){
                fanSpeedCmd = '1';
              }else if (fanSpeed == 'Fan 2'){
                fanSpeedCmd = '2';
              }else if (fanSpeed == 'Fan 3'){
                fanSpeedCmd = '3';
              }else if (fanSpeed == 'Fan 4'){
                fanSpeedCmd = '4';
              }else if (fanSpeed == 'Fan 5'){
                fanSpeedCmd = '5';
              }
              
              var temperatureCmd = parseInt(temperature).toString(16).toUpperCase();
              if(temperatureCmd.length < 2) {
                temperatureCmd = '0' + temperatureCmd;
              }
              
              var modeCmd = '00'+modelCmd+powerModeCmd+fanSpeedCmd+temperatureCmd;
              
              // send to your IR
              // Get IR sensor via UID-Tag
              var irSensor = mcApi.uidTag().getByUid("my-ir-sen").getResource();
              // Update value
              irSensor.value = modeCmd;
              // Send value to sensor
              mcApi.sensor().sendPayload(irSensor);
              
              

              You have to set UID Tag for each sensor and get sensor value with UID Tag. There is no event mechanism in MC right now. You have to configure a timer job to run this operation.

              K 1 Reply Last reply Reply Quote 0
              • K Offline
                ksga @jkandasa
                last edited by ksga

                No worries @jkandasa
                I'm trying to create the needed sensors. I assume I'll have to create some additional "dummy" sensors on the AC node.
                Is it possible to create a custom "Multi selector" sensor?
                The existing HVAC ones doesn't quite match the settings on my unit.

                Regarding the script itself - would it not need some logic to prevent it from sending the value if nothing has changed?
                I added the script on the "Utilities > Scripts tab" - created an "Execute Script" operation on the "Resources > Operations" tab, and finally a simple timer, running every 15 seconds, operating the "operation".

                If the script doesn't check for changes and stop if none has happened, I suspect that I will hear a most annoying beep from the heatpump four times every minute 🙂
                I won't mind, but I'm sure I will shortly be single again....

                UPDATE
                It works as I feared 😉
                Tried just doing "Text" sensors for holding the variables, and the code picks them up (except for fan speed), and sends them to the heatpump faithfully every time the script runs...
                Mildly annoying 😄

                Also, I think I should change from "simple" to "cron" for the timer. However it won't accept my cron entry "*/4 * * * * *" trying to make it run every 15 seconds...

                jkandasaJ 1 Reply Last reply Reply Quote 0
                • jkandasaJ Offline
                  jkandasa @ksga
                  last edited by jkandasa

                  @ksga

                  Is it possible to create a custom "Multi selector" sensor?

                  Right now it is impossible in MyController.

                  Regarding the script itself - would it not need some logic to prevent it from sending the value if nothing has changed?

                  you can check timestamp or previousValue of a sensor variable.

                  timestamp >> would be a great one, you can make a condition with reference timestamp, if any one of sensorVariable timestamp changed, you can trigger further operation.
                  previousValue >> compare value with previousValue, may not be a perfect solution! Might be changed multiple times within few seconds with the same value. Which leads false indication.

                  I vote for timestamp solution, Here is simple check based on timestamp, For this you have to create new variable on Variable repository to take last execution time as a reference time. Create variable hp-lastcheck on Utilities >> Variables repository, add 0 as Value(default value, to avoid script null failure).

                  //Get last check from variable repository
                  var lastCheckVariable = mcApi.variable().get("hp-lastcheck");
                  var lastCheck = lastCheckVariable.value;
                  
                  //Get sensor values with UID Tags
                  var modeSensor =  mcApi.uidTag().getByUid("hp-mode").getResource(); //Heatpump Mode, sensor
                  var fanSpeedSensor = mcApi.uidTag().getByUid("hp-fs").getResource(); //Heatpump Fan Speed, sensor
                  var temperatureSensor = mcApi.uidTag().getByUid("hp-temperature").getResource(); //Heatpump Temperature, sensor
                  
                  // Take refrance of current time, to update last check
                  var currentTime = Date.now();
                  
                  if(modeSensor.timestamp >= lastCheck || fanSpeedSensor.timestamp >= lastCheck || temperatureSensor.timestamp >= lastCheck){
                    // Update values
                    var mode =  modeSensor.getValue(); //Heatpump Mode
                    var fanSpeed = fanSpeedSensor.getValue(); //Heatpump Fan Speed
                    var temperature = parseInt(temperatureSensor.getValue()).toFixed(0); //Heatpump Temperature
                  
                    var modelCmd = '0'; //Default
                    var powerModeCmd = "00"; //Default value
                    var fanSpeedCmd = "0"; //Default value
                  
                    //Update mode
                    if (mode == 'off'){
                      powerModeCmd = '00';
                    }else if (mode == 'Auto'){
                      powerModeCmd = '11';
                    }else if (mode == 'Heat'){
                      powerModeCmd = '12';
                    }else if (mode == 'Cool'){
                      powerModeCmd = '13';
                    }else if (mode == 'Dry'){
                      powerModeCmd = '14';
                    }else if (mode == 'Fan'){
                      powerModeCmd = '15';
                    }else if (mode == 'Maint'){
                      powerModeCmd = '16';
                    }
                  
                    //Update Fan speed
                    if (fanSpeed == 'Auto'){
                      fanSpeedCmd = '0';
                    }else if (fanSpeed == 'Fan 1'){
                      fanSpeedCmd = '1';
                    }else if (fanSpeed == 'Fan 2'){
                      fanSpeedCmd = '2';
                    }else if (fanSpeed == 'Fan 3'){
                      fanSpeedCmd = '3';
                    }else if (fanSpeed == 'Fan 4'){
                      fanSpeedCmd = '4';
                    }else if (fanSpeed == 'Fan 5'){
                      fanSpeedCmd = '5';
                    }
                  
                    var temperatureCmd = parseInt(temperature).toString(16).toUpperCase();
                    if(temperatureCmd.length < 2) {
                      temperatureCmd = '0' + temperatureCmd;
                    }
                  
                    var modeCmd = '00'+modelCmd+powerModeCmd+fanSpeedCmd+temperatureCmd;
                  
                    // send to your IR
                    // Get IR sensor via UID-Tag
                    var irSensor = mcApi.uidTag().getByUid("my-ir-sen").getResource();
                    // Update value
                    irSensor.value = modeCmd;
                    // Send value to sensor
                    mcApi.sensor().sendPayload(irSensor);
                  }
                  
                  //Update lastCheck refrence
                  lastCheckVariable.value = currentTime;
                  mcApi.variable().update(lastCheckVariable);
                  

                  I think I should change from "simple" to "cron" for the timer. However it won't accept my cron entry "*/4 * * * * *" trying to make it run every 15 seconds...

                  In MyController cron is based on Quartz Scheduler. You should have at least one ? in your cron. Kindly refer this tutorial.
                  For 15 seconds: 0/15 * * * * ?

                  K 1 Reply Last reply Reply Quote 0
                  • K Offline
                    ksga @jkandasa
                    last edited by

                    @jkandasa
                    Thanks.. Will give it a go..

                    Is it also correct that the //Update Fan Speed should use
                    if (fanSpeed == 'Auto')

                    and not:
                    if (mode == 'Auto')
                    and so on...?

                    jkandasaJ 2 Replies Last reply Reply Quote 0
                    • jkandasaJ Offline
                      jkandasa @ksga
                      last edited by

                      @ksga

                      Is it also correct that the
                      if (fanSpeed == 'Auto')
                      and not:
                      if (mode == 'Auto')
                      and so on...?

                      I am sorry it is a problem of copy/paste 😉 I have updated the script.

                      1 Reply Last reply Reply Quote 0
                      • jkandasaJ Offline
                        jkandasa @ksga
                        last edited by

                        @ksga Does this script works as you expected?

                        K 1 Reply Last reply Reply Quote 0
                        • K Offline
                          ksga @jkandasa
                          last edited by

                          Hi @jkandasa
                          Sorry for not posting the feedback yet...

                          But yes - It works like a charm. And the timestamp solution seems to do what its supposed to 😄

                          1 Reply Last reply Reply Quote 1
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