Arduino Nano RP2040 failing to connect to Aedes MQTT Broker

General
2
  1. The Aedes brnodeI would suggest you install mosquitto as your broker and remove the Aedes node. Mosquitto is easy to install* and use and many on the forum use it. Here is a tutorial for installing it: https://www.arrow.com/en/research-and-events/articles/mqtt-tutorial
  2. do not use leading / as part of the topic. There is a great read at MQTT Essentials - All Core Concepts Explained talking about MQTT
  3. What arduino you are using?
  4. have you tried any of the MQTT examples that are provided with PubSubClient to see if they work?
  • Advice by @Colin copied from another thread"

There is one thing missing from that tutorial. With the latest mosquitto, if you want to access the broker across the network, you need to add some configuration. This is best done by making a file in /etc/mosquitto/conf.d/ with the configuration in. It can be called anything.conf. So make a file called, for example, /etc/mosquitto/conf.d/mossy.conf and in there put

listener 1883
allow_anonymous true