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Reversing the home

Posted by Kalle

Kalle

Reversing the home
August 07, 2011 09:07AM

Registered: 12 years ago
Posts: 32

Hello,
when I tell my printer to home the Z home is on top, while the Y is on the front, can I revert the home position somehow?

I already tried to change this settings

//// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR -1

they don't work for this scenario.

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brnrd

Re: Reversing the home
August 07, 2011 09:12AM

Registered: 13 years ago
Posts: 1,780

You need to either unplug the motor connector from RAMPS and plug it the other way around or modify the firmware to reverse the direction of the motor. The endstop for the z should be in the bottom if you want it to home in the bottom.

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Kalle

Re: Reversing the home
August 07, 2011 09:29AM

Registered: 12 years ago
Posts: 32

If I revert the connector of the endstop the board does not power up.

I placed the endstop at the bottom but when pressing home it goes up. Also Y is reversed, but it bother me the Z one.

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brnrd

Re: Reversing the home
August 07, 2011 09:32AM

Registered: 13 years ago
Posts: 1,780

No. Don't reverse the connector for the endstop. Reverse the connector of the motor.

Wait. Which way does the z axis go if you nudge it with the +1 or +10 button?

Edited 1 time(s). Last edit at 08/07/2011 09:33AM by brnrd.

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Kalle

Re: Reversing the home
August 07, 2011 09:40AM

Registered: 12 years ago
Posts: 32

if I press + the Z axis goes down

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brnrd

Re: Reversing the home
August 07, 2011 09:42AM

Registered: 13 years ago
Posts: 1,780

OK. Turn the plug for the z motor around on the RAMPS to reverse the direction so that the carrier moves up when you nudge it in the + direction.