Basic Information:
Printer Model: DIY
MCU / Printerboard: BTT Octopus 1.1
Host / SBC Rasberry pi 3b+
klippy.log
klippy.log (1.8 MB)
printer (1).cfg (4.0 KB)
- Drivers: TMC2209 (in standalone/UART mode)
- Motor: 1.8° NEMA17, confirmed working
- Firmware: Latest Klipper (compiled for STM32F446, 32KiB bootloader, 12MHz crystal)
Describe your issue:
I’m using a BigTreeTech Octopus (non-Pro) with TMC2209 drivers. The stepper_z
consistently throws an error and shuts down the printer, even after replacing everything I could think of.
Error Message
TMC 'stepper_z2' reports error: DRV_STATUS: 001400d0 s2vsa=1(ShortToSupply_A!) ola=1(OpenLoad_A!) olb=1(OpenLoad_B!) cs_actual=20
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Printer is shutdown
What I’ve Tried
- Verified motor wiring and connections (4-pin cable seated fully)
- Swapped in a known-working stepper motor
- Swapped in a known-working driver that works on other axes
- Tried a different driver port on the board
- Confirmed
run_current
is 0.65 and motor is not overheating - Tried disconnecting the motor entirely – the same error still appears
- Checked config (see below)
- Issue persists even after
FIRMWARE_RESTART
and power cycling
Expected Behavior
Z-axis should move and home using a BLTouch (with [probe]
properly defined). X and Y work fine using sensorless homing. (I am using triple-Z by the way