Скачать или смотреть Resolving the Arduino ClearCore Connection Issue to MQTT Server on Raspberry Pi

Discover how to troubleshoot your `Arduino` ClearCore device connectivity issues with an `MQTT` server hosted on your `Raspberry Pi`. Get step-by-step solutions now!
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This video is based on the question https://stackoverflow.com/q/63473892/ asked by the user 'Nicholas' ( https://stackoverflow.com/u/11573583/ ) and on the answer https://stackoverflow.com/a/63474012/ provided by the user 'CB_Ron' ( https://stackoverflow.com/u/6047124/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting the Connection Between Your Arduino ClearCore and MQTT Server on Raspberry Pi

As technology advances, many enthusiasts and developers use devices like Arduino ClearCore and Raspberry Pi for various projects, including setting up an MQTT server. However, establishing a stable connection between these devices can sometimes prove challenging. In this post, we will address a common issue: connecting your Arduino ClearCore device to an MQTT server hosted on a Raspberry Pi, specifically when you are using Mosquitto as your broker.

The Problem

You are trying to communicate with an MQTT server hosted on your Raspberry Pi using your ClearCore device programmed with Arduino. While others have successfully made similar connections, you find yourself unable to establish a connection using your current setup. Let's take a closer look at how to resolve this issue.

Your Setup

Here’s a brief overview of your current configuration:

Connection Type: Ethernet

Device: Teknic CLCR-4-13 ClearCore

IP Address: Assigned static IP for your Raspberry Pi (192.168.1.23) using sudo ifconfig eth0 192.168.1.23 netmask 255.255.255.0.

MQTT Broker: Mosquitto, configured to run on port 1883 with user access.

What You've Tried

Despite your efforts, such as running test scripts from a PC that successfully connect to the broker, you are unable to connect through your Arduino program. You've utilized tools like Wireshark to monitor traffic attempts and have experimented with different MQTT versions, but nothing has yielded results.

Your attempt to run the setup gives a failure message when trying to establish a connection to the broker. Let's dive into the solution.

Solution Overview

The main problem arises from IP address conflicts in your setup. When attempting to set both your ClearCore device and Raspberry Pi to the same IP address (192.168.1.23), you effectively created a scenario where neither can communicate properly with the MQTT server.

Action Steps

Change the IP Address of the ClearCore Device:
You need to assign a unique IP address to your ClearCore device. This ensures that the device and the server can communicate without conflicts. For example, you can change the code:

[[See Video to Reveal this Text or Code Snippet]]

Confirm Connection Settings:
In your Arduino code, ensure you maintain the Raspberry Pi as the server within the relevant MQTT client setup section:

[[See Video to Reveal this Text or Code Snippet]]

Re-test the Connection:
After making these adjustments, upload the modified Arduino code to your ClearCore device and monitor the Serial output for successful connection messages.

Conclusion

By ensuring that each device on your network has a unique IP address, you will eliminate conflicts that prevent proper communication. Once you adjust the IP address of your ClearCore device, you should be able to establish a connection to your MQTT server hosted on the Raspberry Pi smoothly.

Final Tip

Always double-check your connections and configurations. If you run into further issues, don't hesitate to test each part of your network individually to ensure everything is set up correctly. Good luck with your projects, and happy coding!