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    Duet Mastero 12864 LCD connection

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    • adhanabalundefined
      adhanabal
      last edited by

      I want to connect 12864 Mini Lcd from fysetc,
      https://wiki.fysetc.com/Mini12864_Panel/

      The problem is when i plug in ribbon cables in expansion board, i see nothing in the display, even no LCD backlight is on.
      I powered the board through laptop, will that be a problem??
      Please see the EXP 1 & EXP2 pinouts for the LCD i purchased and let me know what should i do!!

      7a2a12b8-76dc-415c-87b7-e7325810e744-image.png
      thanks and regards

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      • Danalundefined
        Danal
        last edited by Danal

        The pinouts certainly look compatible.

        No backlight indicates that not even VCC and GND are correct. There is no universal standard for the little "key" that makes the connector go in one way or the other.

        Try reversing them.

        Delta / Kossel printer fanatic

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        • adhanabalundefined
          adhanabal
          last edited by

          i tried reversing but still didint work, can you tell me how to wire this system with jumper cable to test this system?

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          • Danalundefined
            Danal
            last edited by Danal

            I can't tell anything beyond the pinout you've posted above. It looks like if you connect pin-pin, for example +5V to VCC, Gnd to Gnd, and just keep following the pattern, it might work.

            The one odd looking thing is the LCD_CS. It is on opposite sides on Duet vs. the LCD board connector. You might try leaving it off, or connecting it to GND (on the LCD side only) or VCC (same).

            If it still doesn't work after that, it probably isn't going to work at all. But I'm really guessing.

            Delta / Kossel printer fanatic

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            • Danalundefined
              Danal
              last edited by

              Also, given that clones (that work) are in the $12 to $20 range all over the place, I'm not sure how much I'd mess with the Fystec in particular.

              Delta / Kossel printer fanatic

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              • KP0005undefined
                KP0005
                last edited by

                Looks like that particular display has RGB backlight that is controlled separately. There are schematics for the display on the Fysetc website, which version do you have?

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                • adhanabalundefined
                  adhanabal
                  last edited by

                  I have version 2.1, im confused about the wirings , can you tell how to do?

                  KP0005undefined 1 Reply Last reply Reply Quote 0
                  • Danalundefined
                    Danal
                    last edited by

                    I looked at the Fystec web site. They show that Marlin and other compiled firmware needs changes to "pins.h". This proves the fact that they are NOT pin-for-pin compatible with the RAMPS de-facto standard. As such, custom cabling will be required to make it work with anything standard, like Duet.

                    It should be possible to trace the pin diagram provided by Fystec to the RAMPS standard pins to the changes they want made to pins.h and therefore come up with cabling that will work for Duet.

                    To be clear, I'm not going to do that amount of work for you... if you want this to work, go trace those things.

                    Delta / Kossel printer fanatic

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                    • adhanabalundefined
                      adhanabal
                      last edited by

                      @Danal said in Duet Mastero 12864 LCD connection:

                      changes

                      Ah!! thats seems to be big job 🙂 for now i should stay with paneldue to prevent headache

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                      • KP0005undefined
                        KP0005 @adhanabal
                        last edited by

                        @adhanabal Looks like you would have to run separate wires to the R,G and B pins (those are not connected on the Duet) in order to get the LCD backlight working. What happens when you connect the LCD to a 5V supply?

                        adhanabalundefined 1 Reply Last reply Reply Quote 0
                        • adhanabalundefined
                          adhanabal @KP0005
                          last edited by

                          @Matej101 if i press reset button i works, and encoder signals works too, when i rotate the encoder i see a led blink in mother board

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                          • KP0005undefined
                            KP0005
                            last edited by

                            That does not seem right, when I rotate the encoder on a working 12864 display there is no blinking LED on the Duet. It kinda seems like your cables are reversed, does the Duet reset when you rotate the encoder?

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                            • Maboverundefined
                              Mabover
                              last edited by

                              This LCD uses an ST7567 controller and is not currently supported by the duet firmware
                              see https://forum.duet3d.com/topic/12480/maestro-and-other-types-of-12864-lcd/7
                              Hopefully these displays will be supported in the future as dc42 mentions in that thread.

                              It would likely be possible to create a converter using a micro controller to convert the display signals, similar to the way the bigtreetech tft24 and tft35 emulate the supported display type.

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