Using the example sketch from the main thread, I managed to program a few pilot buttons in the domotic. (IR codes are of course entered in the section: IRCode PresetIRCodes  = (...).
I would, however, "upload" a few IR codes to Domoticz, which would control my TV and AV via the IR diode from the Domoticz level.
In this example, there is the sendRCCode () function, which, in theory, sends an IR code (previously uploaded to Domoticz) via IR diode, if of course it will get
message.type == V_IR_SEND.
I added an additional declaration:
MyMessage msgIrSend (CHILD_ID, V_IR_SEND);
but in Domoticz there was no additional Device that would be responsible for sending IR codes.
I think I probably need to do an additional Dummy Switch, which will send an IR signal transmission command to the gateway / node using JSON.
I'm thinking about it for a long time and I have no idea how to do it in DOMOTICZ.
Please help me how to do it.