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Prints mirror image
Posted by tobig11
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Prints mirror image September 23, 2014 11:14AM |
Registered: 9 years ago Posts: 78 |
I have a prusa i3 printer. I’m using Pronterface with slic3r for printing When I print something, It prints like a mirror image of what I want. On the computer on proterface plater it shows the part that is up to the top and when it prints on the bed that up part is down as if a mirror image . What is causing this?
Ed
Ed
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Re: Prints mirror image September 23, 2014 01:22PM |
Registered: 10 years ago Posts: 14,672 |
It sounds to me that either your X axis is reversed, or your Y axis is reversed, but not both.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: Prints mirror image September 23, 2014 02:50PM |
Registered: 11 years ago Posts: 1,320 |
Most likely your Y axis is reversed - it's a common mistake. When at y=0, the bed should be all the way to the back, and when at y=200, the bed should be all the way to the front. The coordinates do not reflect where the bed is, they reflect where the head is relative to the bed. When the bed is all the way back, the head is at the front edge, or y=0.
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Re: Prints mirror image September 23, 2014 03:22PM |
Registered: 9 years ago Posts: 78 |
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Re: Prints mirror image September 23, 2014 04:43PM |
Registered: 11 years ago Posts: 1,320 |
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Re: Prints mirror image September 28, 2014 11:36AM |
Registered: 9 years ago Posts: 78 |
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Re: Prints mirror image September 28, 2014 06:31PM |
Registered: 13 years ago Posts: 643 |
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Re: Prints mirror image September 29, 2014 06:42AM |
Registered: 9 years ago Posts: 78 |
I changed the endstop from the front of the y axis to the back of the y axis. In order for the y axis to home to the back I had to change ,in configuration h, # define Y_home_ dir -1 to 1. and the Y ENDSTOPS-INVERTING from true to false to invert the logic of the end stops. My endstops are set up work on NC.Then on te board changed the y pins for the Min pins to the Max pins.
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Re: Prints mirror image September 29, 2014 06:47AM |
Registered: 11 years ago Posts: 296 |
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Re: Prints mirror image September 29, 2014 07:05AM |
Registered: 13 years ago Posts: 643 |
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Re: Prints mirror image September 29, 2014 10:34AM |
Registered: 9 years ago Posts: 78 |
In pronterface the y axis with plus goes to the back. In the frimware when the, y home dir -1 min, it would only home to the front to the front. I also change the, y min endstop inverting to false, or the endstop would not stop the table. My endstops are setup using NC and Com pins. On the board NC goes to S and COM goes -.
I changed the x axis, to the right, because the company I got the kit from said the x axix is suppose to be on the right as you fce the printer.
If the homing is suppose to be set at, MIN not MAX, how do you get it to home to the back using MIN in the frimware
I changed the x axis, to the right, because the company I got the kit from said the x axix is suppose to be on the right as you fce the printer.
If the homing is suppose to be set at, MIN not MAX, how do you get it to home to the back using MIN in the frimware
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Re: Prints mirror image September 29, 2014 10:51AM |
Registered: 11 years ago Posts: 296 |
Quote
tobig11
In pronterface the y axis with plus goes to the back. In the frimware when the, y home dir -1 min, it would only home to the front to the front. I also change the, y min endstop inverting to false, or the endstop would not stop the table. My endstops are setup using NC and Com pins. On the board NC goes to S and COM goes -.
I changed the x axis, to the right, because the company I got the kit from said the x axix is suppose to be on the right as you fce the printer.
If the homing is suppose to be set at, MIN not MAX, how do you get it to home to the back using MIN in the frimware
Do not change too many things every time you want to try somethingb but keep it simple to avoid confusion.
In configuration you should see this which probably fits your printer as well:
Axes direction:
#define INVERT_X_DIR false // for Mendel set to false, for Orca set to true
#define INVERT_Y_DIR true // for Mendel set to true, for Orca set to false
#define INVERT_Z_DIR false // for Mendel set to false, for Orca set to true
Homing definition:
// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR 1
set x/y to min and x-endstop to your left, z to max and use the pins specified for min/max in pins.h
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Re: Prints mirror image September 29, 2014 01:58PM |
Registered: 11 years ago Posts: 1,320 |
Yes - Justcurious has provided the information. The direction of travel of the Y axis and the home position are two separate settings in the firmware.
Given that you had it set up backwards, you needed to invert the axis using the INVERT_Y_AXIS setting, toggling it from its present condition. Once you invert the axis, you have basically reversed MIN and MAX positions. So then you need to either 1) move the endstop to the opposite end of the axis without making any other changes to the firmware, or 2) leave the endstop at its present location, but change the Y_HOME_DIR to be MAX (1). Most people prefer to have their home position at 0, so I suggested that you would need to do option 1 and move your endstop to the rear.
Edited 1 time(s). Last edit at 09/29/2014 01:59PM by jbernardis.
Given that you had it set up backwards, you needed to invert the axis using the INVERT_Y_AXIS setting, toggling it from its present condition. Once you invert the axis, you have basically reversed MIN and MAX positions. So then you need to either 1) move the endstop to the opposite end of the axis without making any other changes to the firmware, or 2) leave the endstop at its present location, but change the Y_HOME_DIR to be MAX (1). Most people prefer to have their home position at 0, so I suggested that you would need to do option 1 and move your endstop to the rear.
Edited 1 time(s). Last edit at 09/29/2014 01:59PM by jbernardis.
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Re: Prints mirror image September 29, 2014 02:25PM |
Registered: 9 years ago Posts: 78 |
I will check this out tomorrow, I don't have any time to do it today. I will then get back to you
Question; If you set the z to max woun't it home to the top instead of the bed? what do you meam, specified for min/max in pins h. is that located in configg. h?
Edited 1 time(s). Last edit at 09/29/2014 02:41PM by tobig11.
Question; If you set the z to max woun't it home to the top instead of the bed? what do you meam, specified for min/max in pins h. is that located in configg. h?
Edited 1 time(s). Last edit at 09/29/2014 02:41PM by tobig11.
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Re: Prints mirror image September 29, 2014 03:56PM |
Registered: 11 years ago Posts: 296 |
Quote
tobig11
I will check this out tomorrow, I don't have any time to do it today. I will then get back to you
Question; If you set the z to max woun't it home to the top instead of the bed? what do you meam, specified for min/max in pins h. is that located in configg. h?
That is correct, homing at zmax will be at the top and you correct your "0-position" by telling Fw or EEprom your Z-max home position (max Z size). That is more comfortable than trying to make your home position swirtch correlate physical to your bed.
All pins for your arduino are defined in a file compiled with arduino "pins.h" just like config.h needs to be defined with your motherboard. Enter and find your motherboard if you need to change.
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Re: Prints mirror image September 30, 2014 07:00AM |
Registered: 9 years ago Posts: 78 |
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Re: Prints mirror image September 30, 2014 07:13AM |
Registered: 13 years ago Posts: 643 |
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Re: Prints mirror image September 30, 2014 12:20PM |
Registered: 9 years ago Posts: 78 |
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Re: Prints mirror image October 01, 2014 08:05AM |
Registered: 9 years ago Posts: 269 |
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Re: Prints mirror image October 02, 2014 06:28AM |
Registered: 9 years ago Posts: 78 |
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Re: Prints mirror image October 05, 2014 11:39PM |
Registered: 9 years ago Posts: 42 |
If it's mechanically hard to move your Y end stop, you could flip the X endstop instead if that's easier. That way it will be mirrored in both X and Y, which is equivalent to a 180 degree rotation. Parts will come out right; they'll just be sitting in the printer in a different orientation.
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Re: Prints mirror image October 06, 2014 12:48PM |
Registered: 13 years ago Posts: 643 |
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Re: Prints mirror image October 09, 2014 11:49PM |
Registered: 9 years ago Posts: 269 |
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