I've some questions about using TTN as a message broker for Node-Red.
Is it possible, that an instance of Node-Red is sending messages via TTN (MQTT, HTTP) to another instance of Node-Red, thus avoiding a direct connection (no need to set up an own MQTT broker, no need to open TCP/UDP ports)?
Do I need a "real" hardware node, pushing messages over a radio (e.g. LoRa) network, with preconfigured EUIs to set up a device inside a TTN application?
As far as I know, the node-red-contrib-ttn node isn't supported anymore, but i didn't find a successor for that. How do I have to configure the MQTT-node (topic, QoS,...) now?
Thanks a lot!