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    Setup for T-QT Pro Display is black

    Common problems
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    • A
      ardymoon last edited by

      Hi People,

      someone can give me a small hint to get the Display working ? My T-Display S3 is working fine.
      Something else to change ?

      Thanks for help 😉

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      • teastain
        teastain last edited by

        Can you check if your sketch does this:
        #define PIN_LCD_BL 10
        pinMode(PIN_LCD_BL, OUTPUT);
        digitalWrite(PIN_LCD_BL, HIGH);

        Unbelievably their demo LCD.ino sketch turns this OFF at line 25.

        I do not have a T-QT Pro to test but if this fixes it, I will file an issue in their repository against it.
        -Terry

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        • A
          ardymoon last edited by

          Hi Terry 🙂

          thanks for your reply i checkt it looks okay but it´s still not working.
          Maybe it´s something with the SPI idk.
          Had so many Problems with the TFT_eSPI Libary so i set it "UserDefined".
          Currently i set it to #include <User_Setups/Setup24_ST7789.h> // Setup file for DSTIKE/ESP32/ESP8266 configured for ST7789 240 x 240 that is working with the T-Display.
          I think i have to change something there. (Backlight of Display is on.)
          I wrote everything in the Arduino IDE because in Studio Code i get realy strange compiler Error´s with one of my used Lib´s.

          So many Problems xD

          teastain 1 Reply Last reply Reply Quote 0
          • teastain
            teastain @ardymoon last edited by

            @ardymoon The LilyGO products are poorly supported, compared to M5Stack or Arduino.
            You can go here:
            https://github.com/Xinyuan-LilyGO/T-QT/issues
            And start a new issue to get LilyGO support.

            I may have misspoken:
            The LCD_BL may be active LOW, who knows?
            On the LilyGO T-Display S3 it is active HIGH!

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            • A
              ardymoon last edited by

              Hey,

              found my Problem "stupid me" used Arduino IDE 2.0.2 not 2.0.3 xD
              Also Updated the Lib for the Display now it´s working.

              1 Reply Last reply Reply Quote 1
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