mks-viva
commented
3 years ago - DFU mode, you can refer to wiki: https://github.com/makerbase-mks/MKS-RUMBA32/wiki/How-to-upload-marlin-firmware
- You need check your X axis EN pin IO is high or low when you power on
- SD card function, you need enable it
- Does Hotend have a cooling fan that affects temperature measurement?
Ratisse
I bought this card to upgrade my CoreXY printer and replace my MKS Gen 1.4 which was working fine with the MK4duo firmware and Nextion display, But it is not so easy to make it work:
DFU mode not recognized, solved by holding boot button while powering up the board (without reset button)
X stepper driver is activated as soon as the board is powered up, other steppers are OK. Swapping the stepper drivers makes no difference,. No way to desactivate it but it works normally when moving on XY axis,. My stepper drivers are TMC 2208, I've tried both standalone and UART modes, same thing!. I've tried to reflow the solders with no results
SD card is not working. The wiring is: EXP2===> MISO=PA6, SCK=PA5, CS=PA2, MOSI=PA7 EXP1===> GND, 5V. I didn't find any other wiring possibility, maybe I missed something!!
Hotend fluctuations, 10° around the expected temperature, after PID autotune. Was working fine with my old card with a 1 year old firmware, had same problem with latest MK4duo firmware, so I don't know if it's a firmware or hardware issue. Hotbed is working fine (bangbang mode).
So Im wandering if the board is faulty with so many issues on a new board or if I am faulty!