Measure difference

[coen17st]

Hi,

I already have some experience creating scripts with blockly, quite simple. Now I come across a problem that cannot be solved with blockly but what I think I can solve with Lua, unfortunately I have no experience with Lua. someone who can help me?

I want to have the value YES / NO in a string user variable called 'ventilate' based on temperature inside and temperature outside.

IF temp outside 5 degrees higher than temp inside THEN vantilation -> NO
Otherwise ventilation -> YES

Someone who can help me get started?

[waaren]

I already have some experience creating scripts with blockly, quite simple. Now I come across a problem that cannot be solved with blockly but what I think I can solve with Lua
Someone who can help me get started?

Please have a look at this dzVents script (dzVents = 100% Lua)

When not yet familiar with dzVents please start with reading Get started before implementing. Special attention please for
"In Domoticz go to Setup > Settings > Other and in the section EventSystem make sure the checkbox 'dzVents disabled' is not checked. Also make sure that in the Security section in the settings you allow 127.0.0.1 to not need a password. dzVents uses that port to send certain commands to Domoticz. Finally make sure you have set your current location in Setup > Settings > System > Location, otherwise there is no way to determine nighttime/daytime state."

Code: Select all

-- temperature Delta
local temperatureInside = 'temperature inside' -- change to the names of your actual temperature sensordevices
local temperatureOutside = 'temperature outside'

return 
{
    on = { devices = { temperatureInside, temperatureOutside } }, 

    logging = { level = domoticz.LOG_DEBUG,
                marker = 'Temperature delta' },

    execute = function(dz )

        local ventilate = dz.variables('ventilate')
        
        if dz.devices(temperatureOutside).temperature > ( dz.devices(temperatureInside).temperature + 5 ) then
            if ventilate.value ~= 'NO' then ventilate.set('NO') end
        else
            if ventilate.value ~= 'YES' then ventilate.set('YES') end
        end
    end
}