Rat Rig Community [Unofficial]•2y ago

Stepper Driver Port broken how to chang the Slot on Octopus F446

Hi, I just finished again a RatRig 400 but my Motors never run well . After a lot tries and different steppers i get all running until one Motor , after trying switching Motors / drivers I tired the board also in an Running RatRig 300 with the same issue . So all looks like the Stepper driver Port is broken . Next days will Test the board from the 300 in the 400 but so long i want to try to change the slot of the stepper Driver . Does anyone tell me how to do it ? BR Thomas

16 Replies

blacksmithforlife•2y ago

Which motor do you want to switch (A, B, extruder, or one of the Z motors)?

rare-sapphire•2y ago

Right ( think its B or ? ) second slot counted from power sockets

blacksmithforlife•2y ago

octopus 1.1 or octopus pro?

rare-sapphire•2y ago

octopus pro f446

blacksmithforlife•2y ago

in the USER OVERRIDES section:

[stepper_y]
step_pin: <y_step_pin>
dir_pin: <y_dir_pin>
enable_pin: <y_enable_pin>

[stepper_y]
step_pin: <y_step_pin>
dir_pin: <y_dir_pin>
enable_pin: <y_enable_pin>

you will need to replace those with the new stepper port you are using (see https://raw.githubusercontent.com/bigtreetech/BIGTREETECH-OCTOPUS-Pro/master/Hardware/BIGTREETECH%20Octopus%20Pro%20-%20PIN.pdf)

rare-sapphire•2y ago

ok so i moving from Motor 1 to Motor 3 , step_pin: <PG4> dir_pin: <PC1> enable_pin: PA0>

blacksmithforlife•2y ago

[stepper_y]
step_pin: PG4
dir_pin: PC1
enable_pin: PA0

[stepper_y]
step_pin: PG4
dir_pin: PC1
enable_pin: PA0

You might need to invert the enable_pin if so it would be

[stepper_y]
step_pin: PG4
dir_pin: PC1
enable_pin: !PA0

[stepper_y]
step_pin: PG4
dir_pin: PC1
enable_pin: !PA0

rare-sapphire•2y ago

get error Pin '<pg4>' is not a valid pin name on mcu 'mcu' tried PG4 and pg4 same error

blacksmithforlife•2y ago

remove the < and >

rare-sapphire•2y ago

ah just see

blacksmithforlife•2y ago

try

[stepper_y]
step_pin: PG4
dir_pin: PC1
enable_pin: !PA0

[stepper_y]
step_pin: PG4
dir_pin: PC1
enable_pin: !PA0

I bet that will work obviously make sure you have the correct jumpers set on the motor port as well

rare-sapphire•2y ago

Unable to read tmc uart 'stepper_y' register IFCNT i removed all jumpers until the one who need to stay ( secon from down) taht issue i get often befor the slot broke down

blacksmithforlife•2y ago

https://github.com/Klipper3d/klipper/issues/2741 the same troubleshooting steps should apply - could be a bad driver, bad wiring, bad power, etc.

rare-sapphire•2y ago

tried 2 drivers just now , rest of the printer was running just bevor i switched the board ( same board so i could double check the issue)

blacksmithforlife•2y ago

Did you check the wiring to the motor?

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Stepper Driver Port broken how to chang the Slot on Octopus F446