btt skr mini e3 v3 + ender 3v2

Hello, I'm a newbie. I wanted to make friends with the bt scr mini e3 v3 board with a screen from ender 3 v2. But I ran into such a problem that it seems impossible to do it. I tried to do the same steps to change Marlin as they did with bt sr mini e3 v2.0, but nothing works for me. I tried to do it by analogy [github.com]
These are different controllers and I think this alteration is not compatible. After looking through a lot of Internet articles, I did not find that someone had already done it.
Marlin VERSION 02000903
Can you help me?
I ask you to excuse me for my language writing through the translator.

Firstly you need to make a custom cable.

Although this controller has serial pins on exp1, they are in the wrong pin locations

Secondly this is already been added into marlin 2.0.x and bugfix see [github.com]

/**
 *              SKR Mini E3 V3.0
 *                  ------
 *  (BEEPER)  PB5  |10  9 | PA15 (BTN_ENC)
 *  (BTN_EN1) PA9  | 8  7 | RESET
 *  (BTN_EN2) PA10   6  5 | PB9  (LCD_D4)
 *  (LCD_RS)  PB8  | 4  3 | PD6  (LCD_EN)
 *             GND | 2  1 | 5V
 *                  ------
 *                   EXP1
 */
#define EXP1_09_PIN                         PA15
#define EXP1_03_PIN                         PD6

#if HAS_DWIN_E3V2 || IS_DWIN_MARLINUI

/**
   *        ------                ------                ------
   * (ENT) |10  9 | (BEEP)       |10  9 |              |10  9 |
   *  (RX) | 8  7 |         (RX) | 8  7 | (TX)      RX | 8  7 | TX
   *  (TX)   6  5 |        (ENT)   6  5 | (BEEP)   ENT | 6  5 | BEEP
   *  (B ) | 4  3 | (A)     (B ) | 4  3 | (A)        B | 4  3 | A
   *   GND | 2  1 | (VCC)    GND | 2  1 | VCC      GND | 2  1 | VCC
   *        ------                ------                ------
   *         EXP1                  DWIN               DWIN (plug)
   *
   * All pins are labeled as printed on DWIN PCB. Connect TX-TX, A-A and so on.
   */

  #error "DWIN_CREALITY_LCD requires a custom cable, see diagram above this line. Comment out this line to continue."

  #define BEEPER_PIN                 EXP1_09_PIN
  #define BTN_EN1                    EXP1_03_PIN
  #define BTN_EN2                           PB8
  #define BTN_ENC                           PB5

you also need to add #define LCD_SERIAL_PORT 1 in Configuration..h

Edited 8 time(s). Last edit at 03/04/2022 06:43AM by Dust.

Thanks more for the information! I am very grateful to you! To redo the cable, this is what I did right away.
I followed your advice. When compiling, I get this message. Apparently something else needs to be done, but I do not know what.
I attached the error log to the file. error.txt

You probably have set a serial port to port 0, but stm32 based controller do not have a serial port 0 only 1-5

Edited 1 time(s). Last edit at 03/04/2022 07:12AM by Dust.

But where? Tell me please. I don't have Serial 0. VS refers to the error "Marlin\src\HALL\STM32\../../inc/../core/serial.h:72:26: error: 'MYSERIAL' was not declared in this scope; did you mean 'MYSERIAL2'?" Do I have to change something in serial.h? Here are my configuration files, maybe there is an error in them? Configuration.zip

A few config issues..

Disable
SHOW_CUSTOM_BOOTSCREEN
CUSTOM_STATUS_SCREEN_IMAGE
LEVEL_BED_CORNERS

Serial issue is the E3V2 screen in not compatible with having more than 1 serial port enabled

you have #define SERIAL_PORT 2 and #define SERIAL_PORT_2 -1

-1 is the USB port
2 is the tft serial port, you don't need this

Set #define SERIAL_PORT -1
and disable //#define SERIAL_PORT_2 -1

also #define LCD_SERIAL_PORT 1 in Configuration_adv.h doesn't work, wrong type of dwin display... (my bad...)

add #define LCD_SERIAL_PORT 1 to Configuration.h under #define SERIAL_PORT -1

Edited 4 time(s). Last edit at 03/04/2022 07:07AM by Dust.

Thank you very much!!! The firmware was successfully compiled. The board also flashed successfully, the LED continues to blink after initializing the firmware.
But the screen remains black, only the backlight is visible. At the same time, the encoder reacts, when pressed, a characteristic signal is heard from the speaker.
I have already checked the cable several times. Something's wrong. The screen is also stitched on DWIN. I'm afraid I'm facing the same problem as here [github.com]
And I suspect that the problem is not in the cable, but I just can't understand this problem.
Here is the diagram of my cable.

I bow low to you for your help! Everything worked. I sprinkle ashes on my head, it's my fault. I checked several times and noticed that I forgot to add #define LCD_SERIAL_PORT 1. Now the screen is working, but the truth is with artifacts, now I will continue to understand. Once again, thank you very much!!!

Tell me please. Why when I choose #define DWIN_CREALITY_LCD_JYERSUI // Jquery User Interface by Jacob Myers I get the following errors.

Marlin\src\lcd\e3v2\common\encoder.cpp: In function 'EncoderState Encoder_ReceiveAnalyze()':
Marlin\src\lcd\e3v2\common\encoder.cpp:105:12: error: 'ENCODER_PHASE_0' was not declared in this scope
105 | case ENCODER_PHASE_0:
| ^~~~~~~~~~~~~~~
Marlin\src\lcd\e3v2\common\encoder.cpp:106:37: error: 'ENCODER_PHASE_3' was not declared in this scope
106 | if (lastEncoderBits == ENCODER_PHASE_3) temp_diff++;
| ^~~~~~~~~~~~~~~
Compiling .pio\build\STM32G0B1RE_btt\src\src\lcd\marlinui.cpp.o
Marlin\src\lcd\e3v2\common\encoder.cpp:107:37: error: 'ENCODER_PHASE_1' was not declared in this scope
107 | else if (lastEncoderBits == ENCODER_PHASE_1) temp_diff--;
| ^~~~~~~~~~~~~~~
Marlin\src\lcd\e3v2\common\encoder.cpp:109:12: error: 'ENCODER_PHASE_1' was not declared in this scope
109 | case ENCODER_PHASE_1:
| ^~~~~~~~~~~~~~~
Marlin\src\lcd\e3v2\common\encoder.cpp:111:37: error: 'ENCODER_PHASE_2' was not declared in this scope
111 | else if (lastEncoderBits == ENCODER_PHASE_2) temp_diff--;
| ^~~~~~~~~~~~~~~
compilation terminated due to -fmax-errors=5.
Compiling .pio\build\STM32G0B1RE_btt\src\src\libs\buzzer.cpp.o
*** [.pio\build\STM32G0B1RE_btt\src\src\lcd\e3v2\common\encoder.cpp.o] Error 1

This is the error you get when the encoder pins are not defined

Im guessing you have older code....

In pins_BTT_SKR_MINI_E3_V3_0.h you should have

#if HAS_DWIN_E3V2 || IS_DWIN_MARLINUI

not the older

#if EITHER(DWIN_CREALITY_LCD, IS_DWIN_MARLINUI)

The older code only worked on some options.

DWIN_CREALITY_LCD - works
DWIN_CREALITY_LCD_ENHANCED - will not compile
DWIN_CREALITY_LCD_JYERSUI - will not compile
DWIN_MARLINUI_PORTRAIT - works
DWIN_MARLINUI_LANDSCAPE - works

Looks like this update is only in bugfix at this time, but you can make this change to your pins_BTT_SKR_MINI_E3_V3_0.h without issues.

Edited 2 time(s). Last edit at 03/06/2022 11:14AM by Dust.

It looks like I have an old code. Only DWIN_CREALITY_LCD, DWIN_MARLINUI_PORTRAIT and DWIN_MARLINUI_LANDSCAPE really work. Please give a link to the latest code. I took the code from [github.com]

It turned out to compile #define DWIN_CREALITY_LCD_JYERSUI . Did //#if EITHER(DWIN_CREALITY_LCD, IS_DWIN_MARLENA) and added #if HAS_DWIN_E3 V2 || IS_DWIN_MARTINI. But why are there no icons, the display is stitched with DWIN_SET (Gotcha)? Icons were also missing when #define DWIN_CREALITY_LCD was installed, while the screen was stitched with standard СREALITY.

Edited 1 time(s). Last edit at 03/06/2022 12:16PM by hddvrn.

Missing icon are due to you not updating the firmware inside the LCD
Ie loading the Marlin DWIN_SET

You need to Format an SD card using the FAT32 filesystem with 4K cluster size and put the data on the sdcard. Then insert the sdcard into the hidden sd card in the back of the lcd

Yes, indeed, it turned out to be the firmware of the screen. In general, of course, I doubted that it was the firmware, since I know how to flash the screen and did it more than once before buying the btt board. I always focused on the blue screen and then red. I tried to flash it again and everything worked out. I am very grateful to you for your help. THANK YOU!!!!!!!!!

Edited 1 time(s). Last edit at 03/07/2022 01:59AM by hddvrn.

Thank You!
You both are awesome!

I've been messing with this for nearly 2 months and had every single one of the same issues as OP. But between other forums, Reddit, and Facebook I never received the clear answers I needed.
hddvrn asked the exact right questions at the same time I had them and Dust gave perfect answers. You two rock!!!

Hello

can you send firmware.bin file to mrtcsati@gmail.com?

Thank u

[disk.yandex.ru]
my firmware modification of dear tititopher68-dev2
[github.com]
I use [www.creality.com] therefore, there are 5 points of alignment of the bed. Therefore, adjust the bed setting and the nozzle displacement level as you need.

Edited 2 time(s). Last edit at 04/06/2022 06:05AM by hddvrn.

Thank you, i try it. download time more than 5 hours

Thank you very much. The display comes to life, all works.

Edited 1 time(s). Last edit at 04/07/2022 03:16PM by mrtcsati.

Corrections and additions.[disk.yandex.ru]

I really like the function in this firmware Slicer post-processing scripts for Gcode Preview


Details here [github.com]

Link to the original firmware [github.com]

Lite version. Without compilation files.
[disk.yandex.ru]
firmware.bin
[disk.yandex.ru]

Edited 3 time(s). Last edit at 04/11/2022 01:22PM by hddvrn.

What an awesome thread I am glad I found it. Thank you guys for the information.
I'm about to do the same thing - putting an SKR mini e3 v3 on ender 3 v2.
Just to make sure the steps are:
1. Make a custom display cable.
2. Compile a firmware with the adequate changes for the motherboard.
3. Is it mandatory to flash the display or only if there are issues?

If I will get it right I want to make a short guide so it would be easier in the future for others.

Yes, it is mandatory to flash the screen. So that there are no unforeseen glitches of the screen itself.

OK, thanks

CreateThumbnail_50x50_amp_180x180.zip Slicer post-processing scripts for Gcode Preview for Cura 5.0
1. install the 180x180 script
2. install 50x50

Friends,

I am having similar issues as hddvrn was having, as I have an Ender 3 V2 and upgraded to the BTT SKR mini E3 V3.0, but I still cannot get the printer to boot. I followed along with this thread, and used your firmware file you listed and was able to compile it successfully. After flashing with an SD card, the file changed to Firmware.cur, so I assumed that it was successful. I also flashed my LCD screen with the (Gotcha) firmware from your file, and got the blue and orange screens. Finally, I made a custom ribbon cable, following the listed guide and using your image above as a reference.
Despite this, when I turn on the printer, nothing happens. The backlight does come on on the LCD screen, but its blank. On the mini e3, there is a red status light that blinks, and a green light comes on if an SD card is inserted. Otherwise, nothing else happens.
What could I be missing? I can show my config files if needed but I am at a loss.

"On the mini e3, there is a red status light that blinks, and a green light comes on if an SD card is inserted" so the printer booted, the screen not coming up is not the same as it didn't boot.

The display is just a serial device.

Check the wiring on the Orange and purple wires on picture above

Edited 1 time(s). Last edit at 05/02/2022 09:05AM by Dust.

Quote
Dust
"On the mini e3, there is a red status light that blinks, and a green light comes on if an SD card is inserted" so the printer booted, the screen not coming up is not the same as it didn't boot.

The display is just a serial device.

Check the wiring on the Orange and purple wires on picture above

This is how I have my custom wiring. Does this seem correct?

Looks like you didn't switched between RX-TX (black and white according to your scheme)

Edited 1 time(s). Last edit at 05/02/2022 11:15AM by Oren_Arg.