Y Stepper motor only move one direction

Hi, I just got a Rat Rig V-core 3.1 standard kit. I am having a problem where the Y stepper motor only moves in one direction. When the axes are jogged using the interface the printer only moves towards negative Y and Positive X. The attached pictures show the input given and how the printer moves in response. What I have tried for troubleshooting: I connected a stepper that is known to work correctly to the stepper Y's wire. This stepper had the same problem, therefore ruling out an issue with the stepper motors themselves. I swapped the stepper driver for a driver that is known to work correctly. The problem persisted, ruling out an issue with the stepper drivers. I typed STEPPER_BUZZ STEPPER=stepper_x into the terminal. This is supposed to move the "X" stepper back and forth 1 mm. This worked correctly. I typed STEPPER_BUZZ STEPPER=stepper_y into the terminal. This is supposed to move the "Y" stepper back and forth 1 mm. However the motor moved in only one direction. I tried switching the Y motor to a different port on the board but didn't figure out how to successfully do this in firmware.
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8 Replies
blacksmithforlife
Have you tried moving the actual wiring? Maybe it's a bad cable
Ben Cobb
Ben Cobb4mo ago
I'll try it tomorrow I tried switching the wire for a good one. It did not fix it Any other ideas?
blacksmithforlife
check the grub screws on the pullies/couplers and make sure it is tight
Ben Cobb
Ben Cobb4mo ago
Yep, already did that.
blacksmithforlife
are the jumpers correct under the driver?
Ben Cobb
Ben Cobb4mo ago
Yes Does anyone know how to change the Y stepper to a diffrent port on the Big Tree Tech board. Like change it to the motor 3 port. I suspect there may be something wrong with the motor 1 port on my board, as I feel like I've narrowed it down to being either the board or firmware.
Ben Cobb
Ben Cobb4mo ago
Yes thank you, Ill try that later today. It worked, Thank you.