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  • Author
    Posts
  • stoneitechstoneitech
    Keymaster
    @forum
    Post count: 17

    Hello, don’t use SoftwareSerial first, try using the default serial port of Arduino

    • Yogesh KumarYogesh Kumar
      Participant
      @scitivex
      Post count: 7

      Yes tried but not working.

    • Yogesh KumarYogesh Kumar
      Participant
      @scitivex
      Post count: 7

      Please help. Thank you

  • bowei zhangbowei zhang
    Participant
    @zbw3366
    Post count: 62

    Switch the screen to TTL level

    • Yogesh KumarYogesh Kumar
      Participant
      @scitivex
      Post count: 7

      Ok. But please explain. How ?

  • Lollo71Lollo71
    Participant
    @lollo71
    Post count: 11

    May be you’re using a RS232 UART display. In this case you need a level adaptor in order to communicate with Arduino that instead uses a TTL level UART

  • Yogesh KumarYogesh Kumar
    Participant
    @scitivex
    Post count: 7

    What other hardware would be required to communicate it with Arduino?
    However, all the UART devices I have worked with so far are directly connected to the arduino with the help of only 2 tx and rx pins.

    • Fiona LiuFiona Liu
      Keymaster
      @bancroft
      Post count: 371

      Dear Yogesh Kumar,

      Please refer to this connection diagram.

  • Yogesh KumarYogesh Kumar
    Participant
    @scitivex
    Post count: 7

    Yes, I also have the same circuit. But still why the test code I shared above is not working. Is there any problem with the code.
    Please share if you have any test code. Thank you

    • Fiona LiuFiona Liu
      Keymaster
      @bancroft
      Post count: 371

      Dear Yogesh,

      Have you changed RS232 to TTL interface?

      Could you please show me the back of the screen?

      I will check your interface and tell you how to change the interface.

      Best regards

    • Yogesh KumarYogesh Kumar
      Participant
      @scitivex
      Post count: 7

      Please Help how to change 232 to TTL

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    • Fiona LiuFiona Liu
      Keymaster
      @bancroft
      Post count: 371

      Dear Yogesh,

      Please refer to the picture.

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