Question Help with Voron 2.4 gantry

[Deejotech]

Printer Model

Voron 2.4

Extruder Type

Other

Cooling Type

Other

Hi Guys,

I have a Voron 2.4 BigTreeTech Octopus V1 with Physical Z Endstop and Inductive Probe.

I’ve been trying to get my setup to work for quite some time, but it never seems to behave as expected. I’ve included a video and my configuration below and am hoping someone can help me troubleshoot.
Specifically:

• The gantries don’t move together properly during the safe Z-bump on home and make a strange sound.
• There is also an unusual noise after homing X and Y.

Can anyone point me in the right direction to resolve these issues?

voron help – Google Drive

drive.google.com

Thank you

 

[OmarGherd]

It looks like you're missing the stepper driver segments of your config, here's an example of Z1 from mine:

## Z1 Stepper - Rear Left
## Connected to MOTOR_3
[stepper_z1]
step_pin: PG4
dir_pin: !PC1
enable_pin: !PA0
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32

[tmc2209 stepper_z1]
uart_pin: PC7
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

You would need one of these for each of your four stepper drivers stepper_z through stepper_z3

It looks to me like the current could be a bit low & the differing friction on all your z belt/rail system is what could be causing it to get out of kilter.

If you copy mine, DOUBLE CHECK THE PIN ASSIGNMENT against your own. I am using the same octopus v1 you are but may have wired up differently. If this is the cause & it makes it behave better, look at your z-drive train & try to even out the friction differences.

Good luck!

Added all four for easier C&P

[tmc2209 stepper_z]
uart_pin: PC6
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

[tmc2209 stepper_z1]
uart_pin: PC7
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

[stepper_z2]
step_pin: PF9
dir_pin: PF10
enable_pin: !PG2
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32

[tmc2209 stepper_z2]
uart_pin: PF2
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

 

[Deejotech]

It looks like you're missing the stepper driver segments of your config, here's an example of Z1 from mine:

## Z1 Stepper - Rear Left
## Connected to MOTOR_3
[stepper_z1]
step_pin: PG4
dir_pin: !PC1
enable_pin: !PA0
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32

[tmc2209 stepper_z1]
uart_pin: PC7
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

You would need one of these for each of your four stepper drivers stepper_z through stepper_z3

It looks to me like the current could be a bit low & the differing friction on all your z belt/rail system is what could be causing it to get out of kilter.

If you copy mine, DOUBLE CHECK THE PIN ASSIGNMENT against your own. I am using the same octopus v1 you are but may have wired up differently. If this is the cause & it makes it behave better, look at your z-drive train & try to even out the friction differences.

Good luck!

Added all four for easier C&P

[tmc2209 stepper_z]
uart_pin: PC6
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

[tmc2209 stepper_z1]
uart_pin: PC7
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

[stepper_z2]
step_pin: PF9
dir_pin: PF10
enable_pin: !PG2
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32

[tmc2209 stepper_z2]
uart_pin: PF2
interpolate: True
run_current: 0.9
sense_resistor: 0.110
stealthchop_threshold: 999999

Thank you, I will give that a go and let you know how i get along.

 

[5twenty]

You should also use the BTT stock config (specific to that board), so you don't miss anything again, and customize it for your specific settings/hardware...

I am unable to open your link, so I don't know if you are or not, so if you are sorry for insinuating you aren't.

BIGTREETECH-OCTOPUS-V1.0/Firmware/Klipper/generic-bigtreetech-octopus-pro-v1.1.cfg at master · bigtreetech/BIGTREETECH-OCTOPUS-V1.0

This is Octopus open source material. Contribute to bigtreetech/BIGTREETECH-OCTOPUS-V1.0 development by creating an account on GitHub.

github.com