SKR Pro V1.2 - Dual Z-axis steppers with TMC2208 UART

The is a brief tutorial on how to install multiple steppers on z axis for SKR Pro v1.2

SKR Pro v1.2 Playlist:

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Hardware:
1 - BigTreeTech SKR Pro v1.2
1 - USB Serial cable
3 - NEMA17 stepper
3 - TMC2208 UART

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Software:
Marlin Firmware 2.0.x

VScode install:

Pronterface:

Documentation:

[janitleerisser]

great video!!! i can't figure out what you're using for a power source....at 6:09 you start connecting the power to the board....and stated you were not plugged in and show the power cord....so after you connect steppers and power (red/black) cables...what are using to the power the board to test all these connections? also when you have the red/black cables connected to the board what is the other ends connected to?

[mahmoudzaefi]

so we can use 4 steppers in z axix and 2 for x, y and 1 for extruder???

[hermangaviria]

wait so how does the firmware know which pins are the other 2 z steppers ? After all you plugged them in the E1 and E2 stepper ports, won't the firmware just think you have more extruders?