Hello!

I'm finishing a Prusa MK2 clone.

My end stops are (Normally open):

X = Left side
Y = Rear
Z = Inductive sensor

In Pronterface, if I hit X home, it correctly goes to the left and hits the end switch. But if I hit the Y axis HOME it goes forward.

So: X+ goes to the right
Y+ goes to the back
Z+ goes up

Any thought.

Thanks

Max

What firmware are you using.

Latest Marlin.

Here
// Direction of endstops when homing; 1=MAX, -1=MIN
// :[-1,1]
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR -1

Looks like what I have?

/ Direction of endstops when homing; 1=MAX, -1=MIN
// :[-1,1]
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR -1

When you hit Y+ it should go back? Correct? I don't want to switch the motor cable if that is okay.

That 's how mine Hictop Prusa i3 works.

So I you don't want to reverse the wire in the Cable only one choice.

// Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
#define INVERT_X_DIR false
#define INVERT_Y_DIR true // reverse the direction here.
#define INVERT_Z_DIR false

"Y+ goes to the back" that's not correct.

Y+ should move the bed forward

As mentioned above find "#define INVERT_Y_DIR" if its set to true make it false or if its is set to false set it to true.

Thanks everyone, That was the trick!