Klipper config and firmware (STM32F407) for Anycubic Predator running SKR2 board and TMC2209 drivers.
Run DELTA_CALIBRATE, bring print head down to bed with TESTZ until it rubs against paper. Run ACCEPT when height is satisfactory and move onto next point. SAVE_CONFIG after last point.
G28
DELTA_CALIBRATE METHOD=manual
TESTZ Z=-.1
ACCEPT
SAVE_CONFIG