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Can't connect NodeMCU with MQTT

Arduino
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  • S
    sivanath @swalahamani last edited by 30 Mar 2023, 09:57

    @swalahamani Yeah!!

    swalahamani 1 Reply Last reply 31 Mar 2023, 04:37 Reply Quote 0
    • swalahamani
      swalahamani @sivanath last edited by swalahamani 31 Mar 2023, 04:38 31 Mar 2023, 04:37

      @sivanath

      Oh okay.

      Please bring your device if you're coming for the upcoming MakerChat 0x13 tomorrow (IST). Either I and @salmanfaris or both of us will be there.

      Or else we can set up a call sometime this weekend or the next week and sort it out.

      Let me know.

      S 1 Reply Last reply 31 Mar 2023, 04:52 Reply Quote 1
      • S
        sivanath @swalahamani last edited by 31 Mar 2023, 04:52

        @swalahamani I may not be able to come tomorrow. I think we could set up a call. How can I contact you personally?

        salmanfaris 1 Reply Last reply 5 Apr 2023, 09:17 Reply Quote 0
        • salmanfaris
          salmanfaris @sivanath last edited by 5 Apr 2023, 09:17

          @sivanath From your last message looks like the MQTT broker already running on your computer. Could you please try to do a test with nodeRED and see it's working or not.

          S 1 Reply Last reply 11 Apr 2023, 17:39 Reply Quote 0
          • S
            sivanath @salmanfaris last edited by 11 Apr 2023, 17:39

            @salmanfaris Actually, I can't connect my NodeMCU device with the localhost server. I can establish a connection using the test.mosquitto.org server.
            This is my required case: YouTube link

            1 Reply Last reply Reply Quote 0
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            • @codelery Awesome. That's great news. Kudos to @rafitc99 . 🙌

              @codelery Please keep us updated about your project, looking forward to seeing it in action 🤩

              7 Jul 2023, 06:58 • read more
            • C

              @rafitc99 I changed the buffer and that solved the problem. Thanks a lot for coming to my rescue.

              7 Jul 2023, 00:44 • read more
            • C

              @salmanfaris I did change the buffer size and everything is working perfectly. Thanks coming to my rescue.

              7 Jul 2023, 00:41 • read more
            • @codelery said in Help needed: Arduino Wireless Notice Board project:

              I am using the hardware serial (pin 0 and 1 on Arduino Uno)

              As @rafitc99 mentioned, you need to expand the Serila buffer, in the hardware serial also the Arduino board package implements a 64-byte ring buffer for send and receive on the hardware serial messages. So you need to change that to 256 as per your message length.

              6 Jul 2023, 12:22 • read more
            • C

              @rafitc99 The thing is that I am not using the SoftwareSerial library in receiving the message from the first microcontroller. I am using the hardware serial (pin 0 and 1 on Arduino Uno)

              6 Jul 2023, 01:45 • read more
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