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    Can't connect NodeMCU with MQTT

    Arduino
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    • swalahamani
      swalahamani @sivanath last edited by

      @sivanath
      Did you follow the steps which I mentioned previously?

      S 1 Reply Last reply Reply Quote 0
      • S
        sivanath @swalahamani last edited by

        @swalahamani Yeah!!

        swalahamani 1 Reply Last reply Reply Quote 0
        • swalahamani
          swalahamani @sivanath last edited by swalahamani

          @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 Reply Quote 1
          • S
            sivanath @swalahamani last edited by

            @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 Reply Quote 0
            • salmanfaris
              salmanfaris @sivanath last edited by

              @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 Reply Quote 0
              • S
                sivanath @salmanfaris last edited by

                @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 🤩

                  • read more
                • C

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

                  • read more
                • C

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

                  • 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.

                  • 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)

                  • read more
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