Tool zum Nachrichten lesen: https://github.com/eclipse/paho.mqtt-spy

Installation auf dem Raspberry Pi

https://mosquitto.org/2013/01/mosquitto-debian-repository/

http://jpmens.net/2013/09/01/installing-mosquitto-on-a-raspberry-pi/

mosquitto_sub -t "topic/path"

https://www.heise.de/developer/artikel/Kommunikation-ueber-MQTT-3238975.html