And I got tired of editing mcu.py after each update of Klipper, changing the TRSYNC_TIMEOUT value to 0.050, and therefore I added 2 more wires to the 4 CAN wires for the limit switch and BL-Touch signals. Now I don’t have to change mcu.py, the “Communication timeout while homing…” error is gone, and there is no more stepper motor overshoot. And on the freed pin from the BL-Touch signal, I connected the RPM signal from the extruder cooling fan. In general, some pluses. 