Z no longer homes

[ddmetzler]

I downloaded and compiled this version using 023 and my configuration.h out of the 52f7f30 build (could not find any differences).

Using Pronterface (d731aaf) I can move the Z axis, but when I hit the Z-home button it does not attempt to go home. Reverting to 52f7f30 build fixes it.

[midopple]

Hi

Does the Z-Axis no move when homing oder move it in the wrong direction ? When moveing the z-axis with hand did it go to the right direction ? Did you copy the configurtion.h or use the newer and set only the values ?

[ddmetzler]

The Z axis does not move at all when I hit the home button.

When moving the axis by hand it does move the correct direction.

I copied the configuration.h from the previous version, which I've attached. I tried to compare them side-by-side and didn't see a difference.

I will try updating the configuration.h that came with the software and update the values.

Thanks,

DougM

On Wed, May 9, 2012 at 1:12 AM, midopple reply@reply.github.com wrote:

Hi

Does the Z-Axis no move when homing oder move it in the wrong direction ? When moveing the z-axis with hand did it go to the right direction ? Did you copy the configurtion.h or use the newer and set only the values ?

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Reply to this email directly or view it on GitHub: https://github.com/kliment/Sprinter/issues/169#issuecomment-5594952

[midopple]

Hi

Is the Option "#define ENDSTOPS_ONLY_FOR_HOMING" aktiv ? With this option the Endstop is only checked when Homeing is aktiv.

[ddmetzler]

ENDSTOPS_ONLY_FOR_HOMING is not active:

//#define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing

on the older builds when the endstop is incorrectly inverted the Z axis steps down N steps (backoff distance) whereas when the endstop is set correctly Z will home normally. I've never seen an instance where Z doesn't move at all.

In my case all the endstops are inverted:

const bool X_ENDSTOP_INVERT = true; const bool Y_ENDSTOP_INVERT = true; const bool Z_ENDSTOP_INVERT = true;

Thanks,

DougM

On Wed, May 9, 2012 at 9:21 AM, midopple reply@reply.github.com wrote:

Hi

Is the Option "#define ENDSTOPS_ONLY_FOR_HOMING" aktiv ? With this option the Endstop is only checked when Homeing is aktiv.

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Reply to this email directly or view it on GitHub: https://github.com/kliment/Sprinter/issues/169#issuecomment-5604350

[ddmetzler]

This is still an issue in 82bdbc2

with:

define Z_HOME_DIR -1

it will move (in the wrong direction in my case) when I hit the home button, but it will not stop moving when I trigger the limit sensor (optical).

with :

define Z_HOME_DIR 1

It does not move at all.

[midopple]

Hi

Did you try to change --> const bool INVERT_Z_DIR = true; and

define Z_HOME_DIR -1

where is your endstop for Z, at bed level or on the top of the printer

[ddmetzler]

That causes it to go the right direction but it does not respond to triggering the home switch,and the manual control functions via pronterface are backwards (up is down and down is up).

Caveat that this is the first time I've tried these optical home switches, so they might not work/be configured correctly. I have not installed them yet on x or y so don't know whether they work at all.

My Z endstop is at the top of the printer.

Thanks,

DougM

On Wed, Jun 13, 2012 at 1:26 PM, midopple reply@reply.github.com wrote:

Hi

Did you try to change --> const bool INVERT_Z_DIR = true; and

define Z_HOME_DIR -1

where is your endstop for Z, at bed level or on the top of the printer

---

Reply to this email directly or view it on GitHub: https://github.com/kliment/Sprinter/issues/169#issuecomment-6312498

[midopple]

Then try

define Z_HOME_DIR 1 --> MAX Endstop

and in pins.h change from

define Z_MIN_PIN 20

define Z_MAX_PIN -1

to

define Z_MIN_PIN -1

define Z_MAX_PIN 20

20 --> your input number for Endstop

[ddmetzler]

Perfect! Thank you so much for your help. I will close the bug.

DougM

On Wed, Jun 13, 2012 at 1:40 PM, midopple reply@reply.github.com wrote:

Then try

define Z_HOME_DIR 1

and in pins.h change from

define Z_MIN_PIN          20

define Z_MAX_PIN          -1

to

define Z_MIN_PIN          -1

define Z_MAX_PIN          20

20 --> your input number for Endstop

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Reply to this email directly or view it on GitHub: https://github.com/kliment/Sprinter/issues/169#issuecomment-6312870

[ddmetzler]

closed per above solution.