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Home is not good

Posted by alexmarin99 
Home is not good
May 31, 2016 07:37PM
Hello everyone,

So I have a problem with my Prusa I3. It homes well but the home position is not on the bed.

I'll include a picture.
In blue is the print bed.
The black dot is the actual home position.
The red dot is where I want the home position to be (because it's supposed to be there, right?).

Should I change something in the firmware or should I move the endstops?

Any help is appreciated, thanks!
Attachments:
open | download - Screen Shot 2016-05-31 at 7.35.36 PM.png (13.3 KB)
Re: Home is not good
May 31, 2016 08:52PM
You need to move your endstops to modify your home position.
Re: Home is not good
May 31, 2016 09:05PM
There's no way to move them, they just go in that position and there are no adjustments...
Re: Home is not good
May 31, 2016 10:19PM
In firmware change your home location

eg in marlin
// Travel limits after homing (units are in mm)
#define X_MIN_POS 0
#define Y_MIN_POS 0

Measure the distance from where it stops to where you want 0,0 to be

set X_MIN_POS to - measured x distance
set Y_MIN_POS to - measured y distance

So it will still home to the same location, but it knows where it is (-x{somevalue},-y{somevalue)), but when you print everything will be positioned from your 0,0, location
Re: Home is not good
June 01, 2016 03:22AM
Quote
alexmarin99
There's no way to move them, they just go in that position and there are no adjustments...

Can you upload a picture of your endstops, so I can see what they look like and how/where they are positioned?
You should be able to physically move the frame back or forward in relation to the chassis therefore changing where the y position is.
The x endstop should be able to move along the smooth rod


Steve

Edited 1 time(s). Last edit at 06/01/2016 03:25AM by SteveRoy.
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