Domoticz

Good evening everyone, can you tell me if it is possible to control the brightness in a group of 4 lamps?

I can turn on and off the lamps in the group.

Spoiler: show

http://192.168.0.110:9090/json.htm?type ... itchcmd=On
http://192.168.0.110:9090/json.htm?type ... tchcmd=Off

But I can't adjust the brightness

Spoiler: show

http://192.168.0.110:9090/json.htm?type ... l&level=50

Thanks.

No, you cannot. You can make scenes with specific brightness levels.
If you have ZigBee or Zwave devices you mostly can create groups within the gateway and those groups will create a kind of group device in Domoticz (by the gateway) that can control brightness and colors.