Configuring 12864 LCD on Maestro?



  • The Maestro docs say nothing about how to turn on the 12864. I haven't actually tried "just plugging it in" but I assumed there's something to configure as it seems like everything else on Duet needs to be configured before using.

    Apart from one page on how to write your own menus, this seems to be the only meaningful thing in the Maestro docs about the 12864:

    The Duet 2 Maestro also support the PanelDue colour touchscreen. Connectors for a 12864-type mono graphics display and rotary encoder are also provided (these are not yet fully supported in firmware).

    ( https://duet3d.dozuki.com/Wiki/Duet_2_Maestro_Hardware_Overview )

    I haven't actually started setting up the Maestro but I've set up a DuetWifi and DuetEthernet a year ago.



  • I am running a Maestro with 12864 LCD. I can confirm there is no real configuration required to enable the LCD appart from plugging in the display and creating menus.

    The menus I am using are from the M3D Crane that dc42 linked in another post. I will see if I can track it down.

    edit: https://forum.duet3d.com/post/68888



  • The Menu system with example is here
    https://duet3d.dozuki.com/Wiki/Duet_2_Maestro_12864_display_menu_system

    The Display can be configure using M918 P1

    However for me there is a problem where the device does not get initialized correctly
    Try pressing the rest button on the display



  • OK, thank you. That's probably the first thing I will try.



  • I am testing clone maestro before I get the real deal. I have ender 3 and it comes with 12864 lcd. Its different than is advised that it does not have sd card. It has 3 exp connectors. Exp3 matched pins on duet lcd but will it work with only one cable as I have menus on but lcd is blank? Would be good to get it working as that would save me some money as I need lcd's for 12 printers.


  • administrators

    @veti said in Configuring 12864 LCD on Maestro?:

    However for me there is a problem where the device does not get initialized correctly

    Try firmware 2.02RC5 is you are not already using it. In this version, the 12864 display initialisation is deferred until the M918 command is processed. This gives the display more time to self-reset. Also, you can put a G4 delay command before the M918 command if necessary.


  • administrators

    @agniusm said in Configuring 12864 LCD on Maestro?:

    I am testing clone maestro before I get the real deal. I have ender 3 and it comes with 12864 lcd. Its different than is advised that it does not have sd card. It has 3 exp connectors. Exp3 matched pins on duet lcd but will it work with only one cable as I have menus on but lcd is blank? Would be good to get it working as that would save me some money as I need lcd's for 12 printers.

    The schematic is at https://github.com/T3P3/Duet/blob/master/Duet2/Duet2Maestro_v1.0/Duet2Maestro_Schematic_v1.0.pdf. The connections for the LCD are all on connector P2. Connector P1 carries the connections for the SD card (which you can leave out) and the ENC_A and ENC_B connections for the rotary encoder.



  • @Agniusm

    I just got the Ender-3 display working with Duet Maestro running firmware 2.02RC5. You have to activate the display as described by dc42 with gcode M918 P1 E4
    (I used E4 because the response to the encoder was better).

    Here ist the wiring:
    0_1543808714518_24697c77-88a7-4999-9578-a28479e0d7ad-image.png


  • administrators

    Thanks! May I add your diagram to the wiki documentation?



  • @arnd13 thought i read somewhere that command is not necessary, well, great news then.



  • @arnd13
    Just tried wiring it according to your pinout and its still blank. I updated firmware to 2.02RC5.
    Does M918 goes to config.g?
    Where did you get your menu files? Should not make a difference bu still...



  • @dc42 said in Configuring 12864 LCD on Maestro?:

    Thanks! May I add your diagram to the wiki documentation?

    Is that wise? Given that this is another clone? Can you be sure that the pinouts are the same as an original?



  • @deckingman said in Configuring 12864 LCD on Maestro?:

    e same a

    Mine is clone until i fry it and make it all good.
    @arnd13 may have genuine, i dont know.

    I have just made jumper wires and wend wire by wire but its still blank. It might be clone pinout as deckingman mentioned, have no clue.



  • @dc42
    I went poking wires all over and can confirm it is working now. Pinouts given by @arnd13 did not match. I have tested Reparapdiscount display which came in at the time i was doing this today. It worked strait out of the box so clone maestro pinouts for LCD and SD(confirmed) are correct.
    If you like to add it to wiki here is wiring diagram i made. Cheers
    0_1543846754679_wiring.jpg ,



  • @dc42 Yes, no problem.



  • @agniusm That's fine. The only difference ist that LCD_CS (EXP1) and SPIO_CS0 (EXP2) are swapped.
    Strange but my Display is working too ๐Ÿ™‚

    My configuration is original ENDER-3 (no PRO) with display like shown above.



  • Now I'm playing around with the display files (absolute beginner) and found something strange.

    I tested the examples from here https://duet3d.dozuki.com/Wiki/Duet_2_Maestro_12864_display_menu_system
    and the linked files from CraneQuadMenuFiles here https://forum.duet3d.com/post/68888

    With both configuration submenus could not be opened/started. I realized that it must be the "menu" entry in the files. For example:

    button R15 C5 F0 T"Temperature ยป" A"menu" L"x_temp"
    ist NOT working.

    button R15 C5 F0 T"Temperature ยป" A"menu x_temp" L"x_temp"
    is WORKING.

    I edited the whole "menu xx" entries in the CraneQuadMenuFiles in the same way as above and now the menus are working.

    Am I thinking wrong or is it necessary to add the corresponding filename in the "menu" entry?



  • @arnd13 said in Configuring 12864 LCD on Maestro?:

    @agniusm That's fine. The only difference ist that LCD_CS (EXP1) and SPIO_CS0 (EXP2) are swapped.
    Strange but my Display is working too ๐Ÿ™‚

    My configuration is original ENDER-3 (no PRO) with display like shown above.

    I made a short test and can confirm:
    Swapping LCD_CS (EXP1) and SPIO_CS0 (EXP2) makes no difference. Both possibilities are working ๐Ÿ™‚

    But the diagram with photos from @Agniusm looks better ๐Ÿ‘


  • administrators

    Does the Ender with the original electronics have anything connected to the EXP1 and EXP2 connectors? I am wondering whether those connectors might duplicate the pins on EXP3 but in a manner compatible with the RepRapDiscount display. You could use a multimeter to check whether the pins on EXP3 are also connected to EXP1 and EXP2, and if so what the pinout is.



  • The Ender display has 3 connectors EXP 1 to EXP 3. Some of th pins of EXP 1 and EXP 3 are named.

    EXP 1 from the pcb side:
    0_1543857341966_b4d8ad8e-c4db-4c3a-816f-52b404f9983c-image.png

    EXP 3 from the pcb side:
    0_1543857386030_51e65a80-7f35-4d38-add5-885f73057f5f-image.png

    Some pins are have the same signals. EXP 2 has no named pins.

    Maybe it's possible to use 2 standard 10pin cable to connect EXP 1-3 from the Display to Maestro EXP 1 and EXP 2. But until now I didn't have the time to measure and check if it's possible. I'll try to do the next days.


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