I replaced the fans of my ender 3v2 with Noctuas & Buck converters. During the replacement, I made a mistake and burnt the motherboard (shorted one of the fans). I replaced the motherboard, finished the wiring. The new motherboard is the Creality Ender 3 V2
V4.2.7 Silent Motherboard 32 Bit Mainboard with TMC 2225 Drivers from amazon. The old board with the exact same, but in version
The printer works and auto-home runs normally with marlin (all options by default). Name of the binary:
When the printer is running Klipper, controlled by an Octoprint, the steppers dont spin. I can hear the gentle "thud" of the motors being energized when I send a "auto-home" command, they rotate for like a baby step (feels like a single vibration more than a spin, like they're "trying" but don't have the power to actually move) and stay stuck there until the auto-home times-out.
I tried running
STEPPER_BUZZ STEPPER=stepper_x and the same for the Y axis, but it doesn't look like anything is happening.
I am more or less sure this is a software problem, since the printer works just fine with Marlin but I never had this problem with Klipper before I replaced the motherboard.
I have put aside my custom config and am using the "default"
printer.cfg config that I found here (copy/pasted below)
# This file contains pin mappings for the stock 2020 Creality Ender 3 # V2. To use this config, during "make menuconfig" select the # STM32F103 with a "28KiB bootloader" and serial (on USART1 PA10/PA9) # communication. # If you prefer a direct serial connection, in "make menuconfig" # select "Enable extra low-level configuration options" and select # serial (on USART3 PB11/PB10), which is broken out on the 10 pin IDC # cable used for the LCD module as follows: # 3: Tx, 4: Rx, 9: GND, 10: VCC # Flash this firmware by copying "out/klipper.bin" to a SD card and # turning on the printer with the card inserted. The firmware # filename must end in ".bin" and must not match the last filename # that was flashed. # See docs/Config_Reference.md for a description of parameters. [stepper_x] step_pin: PC2 dir_pin: PB9 enable_pin: !PC3 microsteps: 16 rotation_distance: 40 endstop_pin: ^PA5 position_endstop: 0 position_max: 235 homing_speed: 50 [stepper_y] step_pin: PB8 dir_pin: PB7 enable_pin: !PC3 microsteps: 16 rotation_distance: 40 endstop_pin: ^PA6 position_endstop: 0 position_max: 235 homing_speed: 50 [stepper_z] step_pin: PB6 dir_pin: !PB5 enable_pin: !PC3 microsteps: 16 rotation_distance: 8 endstop_pin: ^PA7 position_endstop: 0.0 position_max: 250 [extruder] max_extrude_only_distance: 100.0 step_pin: PB4 dir_pin: PB3 enable_pin: !PC3 microsteps: 16 rotation_distance: 34.406 nozzle_diameter: 0.400 filament_diameter: 1.750 heater_pin: PA1 sensor_type: EPCOS 100K B57560G104F sensor_pin: PC5 control: pid # tuned for stock hardware with 200 degree Celsius target pid_Kp: 21.527 pid_Ki: 1.063 pid_Kd: 108.982 min_temp: 0 max_temp: 250 [heater_bed] heater_pin: PA2 sensor_type: EPCOS 100K B57560G104F sensor_pin: PC4 control: pid # tuned for stock hardware with 50 degree Celsius target pid_Kp: 54.027 pid_Ki: 0.770 pid_Kd: 948.182 min_temp: 0 max_temp: 130 [fan] pin: PA0 [mcu] serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0 restart_method: command [printer] kinematics: cartesian max_velocity: 300 max_accel: 3000 max_z_velocity: 5 max_z_accel: 100
What could be causing the steppers to be stuck with Klipper, but work with Marlin ?
What I tried, with no success (as advised by the internet):
- Untighten the belts
- Remove the
enable_pin: !PC3in the config
- Re-build & flash the firmware instead of reusing the old bin I had kept