Dimmer save last state by OFF

[grzegorz914]

Hi, Every time if we turn OFF dimmer the value is set to 0% and after turn ON to 99%. Can U add option to save last value before switch OFF and use it as start value after switch ON?

[klaudiusz223]

My workaround for this issue is configuration in OpenHAB. I have 2 Items connected to light dimmer and one virtual proxy item My hardware remembers last value and has 2 channels. One for state, reacting on "ON" and "OFF" and 2nd for brightness.

Dimmer      GF_SmallBathroom_Dimmer     "Small Bathroom Ceiling Dimmer"   {...}
Switch      GF_SmallBathroom_DimmerStatus   "Small Bathroom Ceiling Dimmer Status"   {..}

Dimmer      V_GF_SmallBathroom_DimmerHelper     "Small Bathroom Ceiling Dimmer Helper" 

Then i configured 2 rules

rule "V_GF_SmallBathroom_DimmerHelper received command"
when
    Item V_GF_SmallBathroom_DimmerHelper received command
then
    if (receivedCommand == 99 && GF_SmallBathroom_DimmerStatus.state == OFF ) {
        GF_SmallBathroom_DimmerStatus.sendCommand(ON)
    } 
    else if (receivedCommand == OFF  ) { 
        GF_SmallBathroom_DimmerStatus.sendCommand(OFF)
    } 
   else {
        GF_SmallBathroom_Dimmer.sendCommand(receivedCommand)
    }
end

rule "GF_SmallBathroom_Dimmer state changed"
when
    Item GF_SmallBathroom_Dimmer received update
then
    V_GF_SmallBathroom_DimmerHelper.postUpdate(GF_SmallBathroom_Dimmer.state)
end

Homebridge config

{
"name": "Small Bathroom Ceiling Dimmer",
"type": "light",
 "item": "V_GF_SmallBathroom_DimmerHelper"
}

[grzegorz914]

Thanks,

I have create other rules which’s solved my problem. This worked with connection Homebridge>>OH>>PLC S7, updated state and brightness level from all sites. Uses as items:

Dimmer KuchniaBlatDimmer
Dimmer PLC_KuchniaBlatDimmer
Switch  PLC_KuchniaBlatSwiatlo
Switch PLC_KuchniaBlatTaster

rule "Oświetlenie kuchnia meble dimmer on/off i zmiana poziomu"
when
    Item KuchniaMebleDimmer received command
then
     if (receivedCommand == 99 && PLC_KuchniaMebleSwiatlo.state == OFF)  {
         PLC_KuchniaMebleTaster.sendCommand(ON)
         PLC_KuchniaMebleTaster.sendCommand(OFF)
        } else if (receivedCommand == OFF && PLC_KuchniaMebleSwiatlo.state == ON) {
                   PLC_KuchniaMebleTaster.sendCommand(ON)
                   PLC_KuchniaMebleTaster.sendCommand(OFF)
        } else if (PLC_KuchniaMebleSwiatlo.state == ON && (receivedCommand != 0 && receivedCommand != 99)) {
                   PLC_KuchniaMebleDimmer.sendCommand(receivedCommand)
        }  
end

rule "Oświetlenie kuchnia meble"
when
    Item PLC_KuchniaMebleSwiatlo received command
then
         PLC_KuchniaMebleTaster.sendCommand(ON)
         PLC_KuchniaMebleTaster.sendCommand(OFF)
end

rule "Oświetlenie kuchnia meble ustawienie poziomu po załączeniu"
when
    Item PLC_KuchniaMebleSwiatlo changed
then
      if (PLC_KuchniaMebleSwiatlo.state == ON) {
          KuchniaMebleDimmer.postUpdate(PLC_KuchniaMebleDimmer.state)
        } else if (PLC_KuchniaMebleSwiatlo.state == OFF) {
                   KuchniaMebleDimmer.postUpdate(OFF)
        }       
end

rule "Oświetlenie kuchnia meble dimmer aktualizacja poziomu"
when
    Item PLC_KuchniaMebleDimmer changed
then
      var Number poziom1 = PLC_KuchniaMebleDimmer.state
      if (PLC_KuchniaMebleSwiatlo.state == ON && (KuchniaMebleDimmer.state != PLC_KuchniaMebleDimmer.state)) {
          KuchniaMebleDimmer.postUpdate(poziom1)
        } 
end

[steilerDev]

Unfortunately homebridge does not keep the states cached. But your workaround looks very good!