Would it be possible to use any remote for instance a simple led controller to send a signal to the Broadlink RM Mini which converts it to an command for Home assistent for example to put off all the light?
Anyone knows if this is possible or is there another way of doing this?
Yep as long as it is an IR signal. I have it to turn on my turn and air conditioning in the bedroom. You’ll need something like a python script that captures the code to the mini 3.
Sounds like you want the broadlink to always be listening for IR commands and then tell HASS if it sees one. That is only enabled in learning mode to my understanding, not always on.
You could add an IR receiver to a node MCU / or some other ESP8266 and listen for IR codes ongoing perhaps - or add an IR receiver to a PI and use LIRC or some other service to listen for commands.