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Prusa I3 auto bed leveling problem

Posted by pettib 
Prusa I3 auto bed leveling problem
June 13, 2014 04:03PM
Hi everyone.
I just mounted a auto bed leveling setup on my Prusa I3 with Marlin 1.0.0
But i can´t get it working.
I followed the youtube guide that ZennmasterM has done. All the 3 parts.

When i check the offset of the nozzle to the probe i got the following values:
X 25.3
Y 6.0
Z 2.0

Then i put - sign in front when i put it in the configuration.h file.

The problem is that when i have done home and autoleveling it starts to print in the hight of the probe.
So it starts to print on Z 0.4 from the probe possition.

When home is done it says 0 on Z but i expected that it would be +2.0 when i do M114

Can someone please see the problem in my configuration.h ?

regards Peter
Attachments:
open | download - configuration.h (30.8 KB)
Re: Prusa I3 auto bed leveling problem
June 15, 2014 07:07PM
Ignore the offsets just look at the feedrates and speed and steps ignore my x and y and e steps but the z on a i3 with m5 thread should be 4000 mine is setup for a i3 but you have some funny figures for you max feedrates and max aceeleration settings

also look at this

#define INVERT_X_DIR true // 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
#define INVERT_E0_DIR true // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E1_DIR false // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E2_DIR false // for direct drive extruder v9 set to true, for geared extruder set to false


Check my rubbish blog for my prusa i3

up and running
[3dimetech.blogspot.co.uk]
Re: Prusa I3 auto bed leveling problem
June 16, 2014 03:36AM
The printer is working very well. I had this settings then i build it.
The inverted settings is because of a not standard build I3.
The x motor is turned 180 deg.

I´m using 0.9 deg stepper motors that's why i have other numbers.

The only thing that´s not working is the auto leveling and home with probe on servo.
When i use the normal z-endstop everything is fine.

regards Peter
Re: Prusa I3 auto bed leveling problem
June 18, 2014 03:45AM
Anyone who have any more ideá what the problem can be ?


//Peter
Re: Prusa I3 auto bed leveling problem
June 25, 2014 04:00PM
I solved the problem !
After uploading the new firmware to the printer i must run M502 to read the settings to eeprom from configuration.h and then run M500 to store it.
What i understand some of the settings on auto bed leveling is stored in the eeprom, wish one i´m not shure about.
After i run this everthing work´t like a charm.

//Peter
Re: Prusa I3 auto bed leveling problem
June 26, 2014 12:28PM
its the z offset thats in control/motion catogory on the lcd i found out i had a z offset prob when i tried cura it was ok in pronterface but some reason cura read the eeprom


Check my rubbish blog for my prusa i3

up and running
[3dimetech.blogspot.co.uk]
Re: Prusa I3 auto bed leveling problem
June 27, 2014 02:38AM
I use Slic3r and Repetier.
Re: Prusa I3 auto bed leveling problem
June 29, 2014 09:55PM
Yes its the Z Offset thats stored in eeprom, I had the same issue.
The stored value was 0 and the firmware uses the stored value before the value listed in the firmware. (configuration.h file)
You need to load the factory defaults (M502) which will then force the firmware to use the values from your config file.
Then store them to eeprom (M500)
Re: Prusa I3 auto bed leveling problem
June 30, 2014 05:39PM
Quote
Ruprect
Yes its the Z Offset thats stored in eeprom, I had the same issue.
The stored value was 0 and the firmware uses the stored value before the value listed in the firmware. (configuration.h file)
You need to load the factory defaults (M502) which will then force the firmware to use the values from your config file.
Then store them to eeprom (M500)

Interesting ... So would it be a good practise to do this .. even if you haven't seen any problem ?
I did a number of changes to my configuration.h . They all seems to be good working.
A little confusing now if there is 3 different places for parameters/settings

1 eeprom
2 FW ( configuration.h )
3 all stuff I config in Repetier settings

Who's the boss ... ? Can you printout eeprom settings ? M503 ?

Ha det gött
Bosse


Prusa i3 Reworked, Delivered March 28 2014, RAMPS 1.4
Göteborg, Sweden
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