Z Home at X=100 Y=100 I would like to home the Z axis of my Prusa i3 printer with the nozzle in the middle of the bed. The printer is running Marlin firmware. Any suggestion on where and what code to change, please? https://reprap.org/forum/read.php?4,551896,551896#msg-551896 Fri, 17 Jul 2026 04:18:09 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,551896,553076#msg-553076 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,553076#msg-553076 I don't know exactly but if you know a little about c coding I gues you can take these steps:
- Add a menu entry, see the appropriate file and duplicate one item and make it point to your function
- create a function and put the gcode into the buffer and send it to the gcode processor, or find out how the other functions do it and copy and change the code
- recomplie and program the arduino

You could ask this in the marlin github, the devs there will definitely know how to do it. It may be useful to be able to add menu items executing custom gcode.]]> imqqmi Reprappers Wed, 02 Sep 2015 12:55:28 -0400 https://reprap.org/forum/read.php?4,551896,553026#msg-553026 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,553026#msg-553026
What I guess I was not clear on is I would like to add this to the Marlin 'Auto Home' function under the Prepare menu. I run this printer almost exclusively using the SD card.

Thanks again,
Paul]]> Paul McCoy Reprappers Wed, 02 Sep 2015 09:58:46 -0400 https://reprap.org/forum/read.php?4,551896,552766#msg-552766 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,552766#msg-552766
G28 X Y
G1 X100 Y100

To get this running in Pronterface I'm writing the lines into a macro and add a custom button with a spelling name ...]]> VDX Reprappers Tue, 01 Sep 2015 16:38:16 -0400 https://reprap.org/forum/read.php?4,551896,552762#msg-552762 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,552762#msg-552762
G28 X
G1 X100
G28 Y
G1 Y100
G30

That should do the trick.]]> imqqmi Reprappers Tue, 01 Sep 2015 16:29:02 -0400 https://reprap.org/forum/read.php?4,551896,552448#msg-552448 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,552448#msg-552448
G30 P(1-4) ?

++JM]]> J-Max Reprappers Tue, 01 Sep 2015 04:52:35 -0400 https://reprap.org/forum/read.php?4,551896,552153#msg-552153 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,552153#msg-552153
I have Z_SAFE_HOMING set already...what I would like to do is:
1. Home X axis
2. Move X axis to 100mm
3. Home Y axis
4. Move Y axis to 100mm
5. Home Z axis

Inserting the 2 moves is the challenge for me. What commands and where to insert them.

Thanks,
Paul]]> Paul McCoy Reprappers Mon, 31 Aug 2015 11:51:09 -0400 https://reprap.org/forum/read.php?4,551896,552128#msg-552128 Re: Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,552128#msg-552128
#define Z_SAFE_HOMING

This will require you to home x and y first, and they must not time out or it will not home. Generally you can use G28 to home all axes at once.
See comments in configuration.h.]]> imqqmi Reprappers Mon, 31 Aug 2015 10:59:45 -0400 https://reprap.org/forum/read.php?4,551896,551896#msg-551896 Z Home at X=100 Y=100 https://reprap.org/forum/read.php?4,551896,551896#msg-551896 Any suggestion on where and what code to change, please?]]> Paul McCoy Reprappers Sun, 30 Aug 2015 18:30:45 -0400