A20M nozzle not center

[T.G]

Hello,
I have a A20M since Christmas.
First print, demo model ( Dog ). Good quality.
Next I have install my 3d touch and I have flash the firware with the .hex file find on geeetech website ( https://www.geeetech.com/download.html?download_id=33 ) and I have decided to print a model to see if the bed leveling is correct https://pinshape.com/items/44727-3d-pri ... evel-check.
At this moment my print is offset from bed.
So I try to upload the marlin 2.0.1 ( https://marlinfw.org/meta/download/ ) and I use this configuration file ( https://github.com/MarlinFirmware/Confi ... etech/A20M )
In this last file "configuration.h" I have change this variable

Code: Select all

#define BAUDRATE 250000

#define BLTOUCH

#define X_BED_SIZE 255
#define Y_BED_SIZE 255	

#define NOZZLE_TO_PROBE_OFFSET { -37, 0, -3.6 }

#define X_MIN_POS 0
#define Y_MIN_POS -4 


#define Z_SAFE_HOMING

With this change the nozzle is center when I make auto home but if I make G28 X 127.5 Y 127.5 the nozzle is not cente, it's shifted to the left.
And if I move X axis until the limit switch the X axis is +36 (is in abutement) and if I move the X axis at 255 the nozzle is 36 before the end bed

This two video explain the problem:
https://photos.app.goo.gl/AAUfdRkCH3eDsef8A
https://photos.app.goo.gl/rpTKR6EnfD91iRKQ8

For information my X carriage have an ear.

20191104_074235.jpg (173.1 KiB) Viewed 5139 times

Thank for your help

[PeppGiovn]

Hi, i have tryed to update latest firmware on A20M but i have error with bltouch and I can't solve it, if you can help me I will be greateful

[T.G]

You can try this updated version of the Marlin configuration file (2.0.1) so that the 3d touch is centered after auto home and prints are centered

[YvonGeee]

Hello,

Going to try it too.

Can I use Arduino to compile and download, do I need to add the LCD library?

Thanks.