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    T-Display S3 AMOLED - I2C

    Technical Discussion
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    • S
      smile6905 last edited by smile6905

      Hi,
      does anyone have goo experience with I2C on this board, I'm struggling to make it work, the pinout is not clear, I have tried using pin 43 and 44 and the I2C scanner doesn't report anything connected, even if the sensor work perfectly on a different vendor board. What library should be used for I2C on this specific board, are the pin correct?
      Thanks. E.

      teastain2 1 Reply Last reply Reply Quote 0
      • teastain2
        teastain2 @smile6905 last edited by teastain2

        @smile6905 Screenshot 2024-06-28 at 6.45.10 PM.png
        Wire.begin(SDA, SCL) which is

        Wire.begin(43, 44);
        
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        • S
          smile6905 last edited by

          Dear @TEASTAIN2,
          thanks for your input, I have tried this but it was not working.
          I found a qwiic connector and on that port it works but not on the pin header, any idea?
          They should be connected together. (the multmeter confirm)
          Maybe noise on board... I will investigate further.

          thanks anyway

          teastain2 1 Reply Last reply Reply Quote 0
          • teastain2
            teastain2 @smile6905 last edited by

            @smile6905 What sensor are you using?
            I use the qwiic connector for all I2C and occasionally non-I2C sensors and the side pins as well with no problems. As I said the Wire.begin(SDA, SCL) 43, 44 is very important
            Sorry you are having difficulties, keep trying!
            -Terry

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            • S
              smile6905 last edited by

              @teastain2 Mistery solved, it was that specific board with some soldering issues, I got another one and works perfectly

              teastain2 1 Reply Last reply Reply Quote 1
              • teastain2
                teastain2 @smile6905 last edited by

                @smile6905 Good to hear!

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