I have station Davis Vantage Pro2 that have sensors:
- outside temp
- outside hum
- barometer
- wind direction
- wind speed
- solar radiation
- UV
- inside temp
- inside hum
and
- extra outside temp2
- extra outside temp3
- extra outside temp4
Domoticz have hardware type Vantage Weather Station USB ...

my finish script:
-- Conversion from hPa to mmHG

return
{
on =
{
devices =
{
17 -- change to "name" or idx of your barometer device
},
},

logging =
{
level = domoticz.LOG_DEBUG, -- set to LOG_ERROR when tested and OK
},

execute = function(dz, item)
_G.logMarker = _G ...

Answer how add Dummy virtual sensor at V4.10717:
1. Select Dummy (Does nothing, use for virtual switches only)
2. Click Create Virtual Sensor and select Sensor Type: Custom Sensor

if i add Dummy (Does nothing, use for virtual switches only) and add script at Setup-More Options-Events i see at Log:
2020-01-09 15:36:10.547 Status: dzVents: Info: Handling events for: "Temp Hum Baro", value: "18.2;44;1;985.8;3"
2020-01-09 15:36:10.547 Status: dzVents: Info: ------ Start internal ...

i dont understand how i can add Dummy virtual sensor. At hardware type list i have Dummy (Does nothing, use for virtual switches only) only.

I use Davis meteo station and get data from baro device. Domoticz shor baro at hPa. I check setting and dont see where i can change unit to mmHg.

i try create plugin for DMX controller. It use UDP protocol.
As basis i take Kodi plugin...
When i create connection i write:
self.StickConn = Domoticz.Connection(Name="StickConn", Transport="UDP/IP", Address=Parameters["Address"], Port=Parameters["Port"])
self.StickConn.Connect()

At log file i see ...