Geeetech

Rv8 wrote:I have this

in the start g code:
G28 ; home all axes
G29
G1 Z5 F5000 ; lift nozzle

----------------------------------------
in the end g code:
M104 S0 ; turn off temperature
G28 X0 ; home X axis
G29
M84 ; disable motors

Is it ok please ? thanks

That is ok. You could probe the bed warm. Like this:

M190 S50; set bed temperature to 50 and wait to temperature reached
M109 S200; set hotend temperature to 200 and wait
G28 ; home all axes
G29
G1 Z5 F5000 ; lift nozzle

Offset -11 is VERY high. That means that the probe is about one cm lower compared to your nozzle. With the standard 3DTouch mount some value between -1.0 to -1.9 is normal.
Try M851 Z-1.5 followed by M500. Print something and figure out if you need to lower or raise the value.

Ok thanks so what can I do for a lower offset ?

Rv8 wrote:Ok thanks so what can I do for a lower offset ?

Send M851 Z-1.5 and then M500.
Look at the output from the printer. It should show you something like
23:35:48.433 : echo:Z Offset : -1.5

Thanks that's it I will try tomorrow. Thanks a lot for your help
good night !

No problem! I was also a beginner a couple of months ago.
This is an art that takes time to master, if ever.

Good night from Sweden.

Hello,

Today I try the calibration and maybe I don't understand or it doesn't work !?

First I click on go home button and X axix go to home, that's right,
two: the bed go to home that's right too.
three: the x axi move to the center and the bed go to the center and the 3d touch captor move up and down, "I think for calibration"

I do the calibration with M851 etc....M500...

But Must I do that when all axis are go to home ? for me yes, I mean when the x axis and bed are in the center ??

A picture will be more simple, this is the state of my printer when I click on "go to home for all axis in repetier"
Thanks a lot

I decide to make a modifiycation.

first I put the original geeetech firmare ready to use for 3D touch sensor.
I modifiy the sens of travel for X axis
two I modify this Z_PROBE_OFFSET_RANGE_MAX

I use the same value as we can found in the last marlin firmware.
#define Z_PROBE_OFFSET_RANGE_MIN -20
#define Z_PROBE_OFFSET_RANGE_MAX 20

before it was
#define Z_PROBE_OFFSET_RANGE_MIN -15
#define Z_PROBE_OFFSET_RANGE_MAX -5
Now I will test it

Now I can calibrate the sensor with repetier but not with the lcd because it doesn't want to go with negative number. it stay at "0" or + number...
finally I put the original offset because it seems to be ok.

I will try to print but I'm not sure ..

I have made a big mistake in my config.

I have changed my threaded rods to acme and have my firmware set to that thread pitch.

Please make sure this in your Configuration.h:
#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,2560,93} // MXL, Z M8=1.25, MK8

and
#define DEFAULT_MAX_FEEDRATE {400, 400, 2, 45} // (mm/sec)

Sorry!

I have updated my firmware zip..