Sorry folks I know it is kind of Off topic to Node-Red, but I have to start somewhere.
Connecting devices is usually done via WiFi or Ethernet.
Can Bluetooth work?
I want to send messages (MQTT at a push) and am not sure how to get it all working.
MQTT would make life a lot easier as I then don't need to worry about protocols/formats.
It is all done inside MQTT.
But the mechanics of how to do that is beyond me and I don't really know where else to ask.
Most of the stuff I find on it is how to play audio - which I thought was the only use of BT....
But I then see you can send files via it, and some remote controls use BT as their comms method.
So it must be possible. Just getting into it is the part which has me stumped.