Prusa i3v homing issue

Hey guys. I have had this printer for nearly a year now and it's been working great, however, lately there has been an issue where when I do auto home all 3 axis will not home if they are already touching the endstop. Any input would be greatly appreciated. Thanks!

You did not provide enough info: firmware, endstops type etc. min or max? Perhaps the endstop plugs are lose or wires broken? If it worked before, I think that it can be something like broken wires (Once happened to me). Do you use Pronterface or... send commands M119 or M114 ?

---

Prusa i3, Ramps 1.4. Catnozzle 0.4mm
SketchUp - Enveloping Globoid Worm Gear - Part One - 3D Printed: [youtu.be]
DesignSpark Mechanical & more precise screw thread: [youtu.be]
Nicer Screw Thread In SketchUp ( Bolts,Nuts): [youtu.be]
How To Model A Heart Shape In SketchUp: [youtu.be]
How To Draw 3D Printable Snap Fit Ball Joint In SketchUp: [youtu.be]

Quote
Plasteroid
You did not provide enough info: firmware, endstops type etc. min or max? Perhaps the endstop plugs are lose or wires broken? If it worked before, I think that it can be something like broken wires (Once happened to me). Do you use Pronterface or... send commands M119 or M114 ?

These are the endstops I use [builda3dprinter.eu] I use Marlin firmware, can't remember what version. I don't use Pronterface or anything like that (I always print from SD card), I just used Repetier once to calibrate my extrusion. I checked the wires and it all looks good. Last night the printer just started homing properly again just out of nowhere, I honestly do not know why this happened but it's fixed so I'm happy

Thank you.

Edit: It started doing it again -_-

The LCD is saying all axis are at 0. When I move away from the endstops and do Auto home they hit the switch and just stop instead of bouncing back and hitting the switch again.

Edited 3 time(s). Last edit at 01/12/2015 09:37PM by TehStranger.

If it sometimes works and sometimes not it sounds like a connector / wire loose problem? 3D printers usually shake a lot... How the software could change without doing nothing? Or your electronics board has something loose?. I have same type connectors with three wires, but no LCD.

P.S. Did you check this? "Homing issues with Marlin" there are few solutions: [forums.reprap.org]

---

Prusa i3, Ramps 1.4. Catnozzle 0.4mm
SketchUp - Enveloping Globoid Worm Gear - Part One - 3D Printed: [youtu.be]
DesignSpark Mechanical & more precise screw thread: [youtu.be]
Nicer Screw Thread In SketchUp ( Bolts,Nuts): [youtu.be]
How To Model A Heart Shape In SketchUp: [youtu.be]
How To Draw 3D Printable Snap Fit Ball Joint In SketchUp: [youtu.be]

Quote
Plasteroid
If it sometimes works and sometimes not it sounds like a connector / wire loose problem? 3D printers usually shake a lot... How the software could change without doing nothing? Or your electronics board has something loose?. I have same type connectors with three wires, but no LCD.

P.S. Did you check this? "Homing issues with Marlin" there are few solutions: [forums.reprap.org]

I have not seen that. I'll try uncommenting #define DISABLE_MAX_ENDSTOPS and see how it goes. Thanks!

Just letting you know I haven't tried it yet because it's been working normal but once it starts doing that crap again I'll try it out and report back.