Print stops randomly

[Hopper0168]

I have just installed SKR 1.4 turbo with a TFT 35 V2.0, on my Ender 3 Pro, got everything set up correct i think, It prints great until about 65 to 99% and just stops, no message on the screen, bed and E0 are still hot, but no movement. I can reboot the printer and start printing again but it will stop again at a different place. I have tried a couple of different files, same thing. I did print a small print ( less than 45 minutes ) and it worked good. Marlin 2 TMC2209 drivers TFT firmware is updated. SKR firmware is set for the Ender 3

Anyone else have this issue?

[Hipsta69]

I'm Having the same issue on my SKR Mini E3. From the research that I've done so far, swapping the Serial port priority, is recommended:

Swap this:

`#define SERIAL_PORT 2

/**

• Select a secondary serial port on the board to use for communication with the host.
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */ #define SERIAL_PORT_2 -1`

For this:

`#define SERIAL_PORT -1

/**

• Select a secondary serial port on the board to use for communication with the host.
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */ #define SERIAL_PORT_2 2`

[Hopper0168]

I get

In file included from Marlin\src\HAL\LPC1768../../inc/MarlinConfig.h:42, from Marlin\src\HAL\LPC1768\HAL.cpp:24: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ In file included from d:\marlin-bugfix-2.0.x\marlin\src\inc\marlinconfig.h:42, from Marlin\src\HAL\LPC1768../../core/serial.h:24, from Marlin\src\HAL\LPC1768\DebugMonitor.cpp:25: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ In file included from Marlin\src\HAL\LPC1768../../inc/MarlinConfig.h:42, from Marlin\src\HAL\LPC1768\HAL_SPI.cpp:51: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ In file included from Marlin\src\HAL\LPC1768../../inc/MarlinConfig.h:42, from Marlin\src\HAL\LPC1768\eeprom_flash.cpp:39: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ Compiling .pio\build\LPC1769\src\src\HAL\LPC1768\include\digipot_mcp4451_I2C_routines.c.o In file included from Marlin\src\HAL\LPC1768../../inc/MarlinConfig.h:42, from Marlin\src\HAL\LPC1768\eeprom_sdcard.cpp:25: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ In file included from Marlin\src\HAL\LPC1768../../inc/MarlinConfig.h:42, from Marlin\src\HAL\LPC1768\eeprom_wired.cpp:24: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ Compiling .pio\build\LPC1769\src\src\HAL\LPC1768\include\i2c_util.c.o Compiling .pio\build\LPC1769\src\src\HAL\LPC1768\main.cpp.o *** [.pio\build\LPC1769\src\src\HAL\LPC1768\DebugMonitor.cpp.o] Error 1 *** [.pio\build\LPC1769\src\src\HAL\LPC1768\HAL.cpp.o] Error 1 *** [.pio\build\LPC1769\src\src\HAL\LPC1768\eeprom_flash.cpp.o] Error 1 *** [.pio\build\LPC1769\src\src\HAL\LPC1768\eeprom_wired.cpp.o] Error 1 *** [.pio\build\LPC1769\src\src\HAL\LPC1768\HAL_SPI.cpp.o] Error 1 *** [.pio\build\LPC1769\src\src\HAL\LPC1768\eeprom_sdcard.cpp.o] Error 1 In file included from d:\marlin-bugfix-2.0.x\marlin\src\inc\marlinconfig.h:42, from Marlin\src\HAL\LPC1768../../sd/cardreader.h:24, from Marlin\src\HAL\LPC1768\main.cpp:38: d:\marlin-bugfix-2.0.x\marlin\src\hal\lpc1768\inc\sanitycheck.h:143:6: error: #error "Serial port pins (2) conflict with E stepper pins!" 143 | #error "Serial port pins (2) conflict with E stepper pins!" | ^~~~~ *** [.pio\build\LPC1769\src\src\HAL\LPC1768\main.cpp.o] Error 1

if i do that....

[Hipsta69]

That's odd, it's referring to pins. however that change has no bearing on the pins used, all it is doing is changing the priority of the 2 ports already used.

[Hipsta69]

I have just looked at my build for my SKR1.4 and that uses different ports to the mini:

Try

`#define SERIAL_PORT 2

/**

• Select a secondary serial port on the board to use for communication with the host.
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */ #define SERIAL_PORT_2 0`

[Hopper0168]

Right now i have the second one commented out and port 1 on ( -1 ) and have one print successful.

[Hopper0168]

Second and larger print was successful today.

[DrTon]

I have the same problem: printer stops on long prints at random point. I've checked power line of MCU (3.3v) and I think I found the issue. There are random spikes from time to time, once per 0.5-2 hours, even when printer is doing nothin (all steppers and heaters are off):

Voltage drops during oscillation from 3.3v to 2.5v (may be even lower), I think that is enough for CPU to stop working normally. Any ideas what to change in schematic to stop this?

Board: SKR 1.4 Turbo, attached TFT 3.5 V3.0 via UART.

[Hopper0168]

Perhaps your issue may be the power supply. Since i made the changes above, to the serial port. I haven't had an issue with it stopping.

[DrTon]

Added capacitor on 3.3v regulator output and didn't seen these oscillations anymore, but behavior is the same, more looks like smoothieware bug (https://github.com/Smoothieware/Smoothieware/issues/1481).

[damtrx]

I'm into the same issue. Changed my stepper drivers to A4988 and still have the problem. I remember that with 2.0.1 marlin i didn't have this problem so i think it is a firmware issue. Sadly i don't have 2.0.1 firmware anymore

[DrTon]

I switched from Smoothieware to Marlin and everything works fine.

[DarkRedemptor]

Thanks Hipsta69, I think I have the same problem than Hopper0168, andf the trick about the serial port seems to work with my 3dprinter (Tevo Tornado gold with SKR1.4 turbo)

Thanks again :-)