Sensorless homing for x & y

[kvng1]

I have TMC2209 on uart mode for x & y drive. Do I need 3,3V or 5V on drive ic- pwr jumper to use sensorless homing? I'm using klipper.

[alfadhela]

Yes you need to set ic-pwr jumper to 3.3v.
https://github.com/makerbase-mks/MKS-StepStick-Driver/tree/master/MKS%20TMC2209

[juniortada]

Work for me using 3.3v with marlin.
STALL_SENSITIVITY in 10
TMC2226