Hello everyone,
i created a little Raspberry Pi Node-Red Setup according to some videos and the basic steps from the webpage. Right now everything seems fine. I Installed Mosquttio and created the first mqtt in -> msg.playload out. . I can connect to the Web Interface via Browser from my PC and the MQTT In Button signals "connectet".
So first Test would be a simple "Hello World" message. But i can´t connect the Raspberry PI Broker via any other Client. I am Using MQTTBOX on my PC and MQTTDash on my Android Phone. All got no connection. I disabled the Firewall, changed the router, installt / startet from 0 with node-red at least 4 times. Nothing.
Where / what could the Problem be? Any Input helps