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Homing Issue X-Axis (LIFTOFF)

Posted by Daniel Pfau 
Homing Issue X-Axis (LIFTOFF)
January 04, 2015 04:11PM
Hello Guys,
Hallo Leute,

I don´t know how to get rid of the approximately 50mm moving away after homing the second time from the mechanical or optical endstop!?
Ich weiss nicht warum meine X-Achse nach dem 2. Referenzfahren sich ca. 50mm vom mechanischen oder optischen Endschalter entfernt!?

What is causing that behaviour? I can´t find any errors in my firmware.
Was verursacht dieses Verhalten? Ich finde keinen Fehler in der Firmware.

I need to get rid of this so it won´t affect any movements later on.
Ich möchte das loswerden damit es keine Folgefehler verursachen kann.

Is it the firmware setting?
Ist es die Firmware?

Is it the Ramps 1.4 or Arduino Mega 2560?
Oder Ramps 1.4 bzw. Arduino Mega 2560?

Or just something I don´t see right now?
Oder etwas was ich noch nicht weiss?

Thx confused smiley

Edited 1 time(s). Last edit at 01/04/2015 04:20PM by Daniel Pfau.
Attachments:
open | download - Repetier.ino (6.2 KB)
Re: Homing Issue X-Axis (LIFTOFF)
January 04, 2015 09:43PM
Can you post a video or image of what it is doing? likely it would be a firmware setting.

One thing I would try first is swap the end stops from the y axis to the X axis and trigger it manually to see if it is an issue with the endstop itself.

Best to eliminate the simple things first. Also are you using a mechanical end stop or optical? I dont have much experience with optical endstops.

I primarily just use mechanical in my designs. I would recommend using a mechanical one for testing to eliminate that as a possibility.
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 03:38AM
You could also check the repetier configuration.h for this setting: ENDSTOP_X_BACK_ON_HOME

If its not 0 then it will move away from the endstop once triggered, it might currently be set to 50?
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 04:45AM
Thanks fpr the answers,

like I wrote I already tried it with both switches Optical and Mechanical!

I added the video to it!

@sdavi: Do you know where to find the 50mm setting?

Edited 1 time(s). Last edit at 01/05/2015 04:46AM by Daniel Pfau.
Attachments:
open | download - Mecherror.mp4 (350.4 KB)
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 05:25AM
Looks to me like its the ENDSTOP_X_BACK_ON_HOME since it appears to do the homing correctly.

Did you use the online firmware configuration or edit by hand? The setting is in the Configuration.h file, post this config file if you are having trouble so we can have a look.

If you used the online editor, then its in the Mechanics tab at the bottom under: "Endstop distance after homing"
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 07:48AM
Yes i used the online configurator!

Here is the file...
Attachments:
open | download - Repetier.ino (6.2 KB)
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 08:59AM
Quote
Daniel Pfau
Yes i used the online configurator!

Here is the file...

It is the Configuration.h file that is needed not the .ino file.
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 09:00AM
Oh sorry thought all files are in that one!
Attachments:
open | download - Configuration.h (23.9 KB)
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 09:17AM
Looking at your configuration set this line to 0.

"xOffset": 53.5,
Re: Homing Issue X-Axis (LIFTOFF)
January 05, 2015 06:41PM
Oh, i didnt realise that you have a dual hotend setup........

Does this also happen when you manually click the homeX button? Or is it only happening when you start a print?
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