Domoticz

Posted: **Thursday 10 December 2020 23:05**

Something strange happens. I have a FIBARO Smart Implant device attached to a SenseAir tSENSE CO2-meter which sends the 0-10V voltage signal of the CO2-meter to Domoticz. A virtual sensor "VoltageCO2" contains the voltage from the CO2-meter and a dzVents script converts the voltage to the virtual sensor "CO2 Woonkamer". In the Devices Current Status list the value of "CO2 Woonkamer" is displayed correctly. However, under Devices and Utility the value of "CO2 Woonkamer" is 0. What goes wrong here?

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The script

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return
{
    on =
    {
        devices =
        {
            'VoltageCO2',
        },
    },

    logging =
    {
        level = domoticz.LOG_DEBUG, -- change to domiticz.LOG_ERROR when all OK
        marker = 'Conversion',
    },

    execute = function(dz, item)
        dz.devices('CO2 Woonkamer').update(item.voltage*200)
    end
}

Posted: **Thursday 10 December 2020 23:47**

HoogendoornJH wrote: ↑Thursday 10 December 2020 23:05 Something strange happens. I have a FIBARO Smart Implant device attached to a SenseAir tSENSE CO2-meter which sends the 0-10V voltage signal of the CO2-meter to Domoticz. A virtual sensor "VoltageCO2" contains the voltage from the CO2-meter and a dzVents script converts the voltage to the virtual sensor "CO2 Woonkamer". In the Devices Current Status list the value of "CO2 Woonkamer" is displayed correctly. However, under Devices and Utility the value of "CO2 Woonkamer" is 0. What goes wrong here?

What you see on the Devices Currents Status list is the nvalue field (numeric value) from the database (table devicestatus)
The Devices and Utility tabs show the svalue (string value) field of the (custom sensor type) device.

The dzVents update function can carry both nvalue and svalue.

If you change line

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dz.devices('CO2 Woonkamer').update(item.voltage*200)

to

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dz.devices('CO2 Woonkamer').update(nil, item.voltage*200)

or

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dz.devices('CO2 Woonkamer').update(item.voltage*200, item.voltage*200)

You will see the value you expect.

Posted: **Friday 11 December 2020 6:12**

Yes, that works, waaren, thank you very much! (I am learning LUA and dz.Vents, but with limited time available it will take some time to reach a certain level; until now I find for solutions by googling, but the solution does not always fit the problem exactly).

Domoticz

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