2. This blog post shows 3 main solutions: Flipping the motor cables (As suggested in the other answer) Switching the x and y-axis: This may switch the direction of your y-axis depending on the way your printer is setup) Change the direction of the axis in firmware which you can see below how to do: "When the solution opens up, you will see many To invert the movement direction of an axis without rewriting the firmware there are two main ways, from mos invasive to easiest: Mount the actuator "upside-down" as that flips the rotational normal vector. use a left-hand-threaded rod and nut. This does not flip rotation but how rotation affects the bed. alter the stepper cables by "crossing issues with Cr touch and auto homing after 4.2.7 upgrade. I installed the CR touch and the printer is not auto homing at all. The Z axis is not lowering. I then get the message stopped. I'm pretty sure I hooked everything up correctly as the Cr touch can only get plugged in one way. Any suggestions. Z axis not lowering suggests that you don't 1. Y axis operated in an inverted manner. 2. Y Homing went towards -Y, instead of +Y. Changing INVERT_Y_DIR from false to true did fix the inversion issue. Changing Y_HOME_DIR from -1 to +1 did not fix the homing issue. When set on -1, it would, if allowed, move to the maximum -Y value without stopping. When I manually move the extruder on each axis Y and Z work fine, but when I move the extruder on the X axis +10mm, the extruder moves to the left instead of right. When I home each axis, home X moves the extruder all the way right as far as it can go and continues to try to keep going. 1. Assuming you already know your Z-offset value, there are several ways to set Z-offset for your printer: on printer's display. On the printer's LCD, navigate to Control > Motion > Z Offset. Here you can set the Z-Offset value. Next, navigate to Control > Store settings to store this offset permanently to EEPROM. Once I clicked an endstop I should have kept it closed since the homing expects to keep the switch in a triggered state once it does the step back to the homing position. Simply mounting the endstop on the printer / keeping the end stop triggered in my hand for a few seconds after homing solved the issue for me. HOLY FUCK> IM RETARDED. THANKS Configuration. 1. Z Probe Pin. Before configuring any bed probe be sure to read its documentation and the documentation for your electronics. Make sure you know to which pins the probe will be connected. Marlin provides reasonable defaults, but they will not apply to every situation. 3. Homing is the process where the machine finds all the limits of the 3 axis (at the endstop switches), to have a common reference point for each axis. From the endstops, firmware defined values exist to give the printer head the offset to the home position, also known as origin (X=0, Y=0). If the origin position is in front of the plate Once it's finished the Auto Home process, bring the Z axis down so the nozzle tip is closer to the bed surface, to make it easier to compare against the dot on the paper. Now use the screen controls to shift X and Y until the nozzle is directly over the dot. The nozzle is now in the same position that the probe was. k4hC.