MATLAB Answers

Thingspeak broker address not working

21 views (last 30 days)

Accepted Answer

Christopher Stapels
Christopher Stapels on 16 Feb 2021
The mqtt broker gives really limited messages. If you had parts of the format wrong for the subscribe method, it will probably just fail silently.
Read the documentation for MQTT closely to make sure the format is correct. I havent dont the simulink example, so I would reccomend you try mqttfx or the MATLAB based MQTT client (on FEX). Once you get the syntax correct using MQTTFX or MATLAB, its usually easier to make sure you enter the correct settings in blocks in simulink.
Sadly the RPI example in the thingSpeak doc has an outdated library (to do list), but it might give you a different starting point if the simulink version wont work.

More Answers (1)

Christopher Stapels
Christopher Stapels on 15 Feb 2021
It is working great across all of my many channels, I did not see a break near the time you posted this. What command did you try to send to the server?
  3 Comments
JUDITH NJOKU
JUDITH NJOKU on 16 Feb 2021
I tried mqtt.thingspeak.com first. I only decided to change it when I could not receive any message on the Thingspeak channel.

Sign in to comment.

Tags

Communities

More Answers in the  ThingSpeak Community

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!