Radek

I am also using BTT SKR V1.4. Can you describe your problem better? Send the configuration files you modified.

Compile the FW. Copy the created firmware.bin file to the SD card. Insert the SD card into the slot on the SKR board. Restrate SKR Marlin\\.pio\build\LPC1769\firmware.bin

If I look at the pin file for your board, there is something I don't like...

I didn't mean this. PA9 and PA10 is fine  I don't have the SKR mini E3 board, nor the BTT MINI12864 display. That's why I can't test the settings....

The swap is here  RX2 = PA3 TX2 = PA2 According to the pin file, it's the other way around. 

Some pins ( PA9 , PA3) are defined twice. That won't be good either. I would try to comment on these items: #define LCD_PINS_RS PA9 #define LCD_PINS_ENABLE PA3 #define LCD_RESET_PIN...

Congratulations. That's great. So what have you changed? I would suggest changing it in Marlin so that it works for others and they don't have to look for a problem...

@Legiotech I suggested the Marlin modification. Thisiskeithb says no need to edit the file Marlin\src\lcd\dogm\marlinui_DOGM.cpp If no characters appear on the display, it is said that resetting the EEPROM is...

@sporkforce, send the exact wording of the error. Send all the files you edited: configuration.h, configurtion_adv.h, pin file and more...

The error says that you have used a display that requires a special connection cable. You have made the cable, now you need to accept this warning and comment out...