Latest Marlin bugfix-1.1.x branch for PI3 Pro B

[Rv8]

we found it

I have not connected the end swith of the bed and I have connected the z end stop to the the Y min switch

Now I will try

[Rv8]

It seems ok, go to home works fine, I send a print and wait because I think the Z axis is little high for me, wait and see, 7 minutes for print this part, it's a caddy token..

[Rv8]

the Z axis is too high, how can I resolve that, maybe the 3d touch must be configured ?

[Rv8]

I do a go to home and the 3d touch do a test surface, just in the center of the bed ??

[Rv8]

I found that

Calibration
These instructions are written to explain how to calibrate using a computer connected through the USB port to your printer. This process also assumes that the EEPROM has been enabled in Marlin.
From the command window of Repetier Host or Simplify3D etc enter the following:
M851 ; note the number
M851 Z0 ; set the offset to zero
G28
G1 Z0
The LCD display should show Z = 0
From the display go to the Menu then Prepare/Move axis/0.1mm/Move Z
Now move the Z axis slowly down until the nozzle is the right distance from the build plate (folded piece of paper or thin card).
*Note the Z axis value on the display it should be something like -1.5
M851 Z-1.5 ; to set the offset you got in the previous step.
M500 ; Stores the values in EEPROM so that it is not reset when you power the printer off and on.
Now you are ready to print.

If you find that you need to increase or decrease the gap then do:
M851 Z-1.4 ; this would make the gap bigger or
M851 Z-1.6 ; this would make the gap smaller
M500 ; to save the value to EEPROM
*Remember the -1.4, -1.5 and -1.6 are just examples , yours will be different.

[Rv8]

otherwise could you tell me please why the send a resistor in the package with 3d sensor ? thanks

[NiklasO]

The resistor is for other printer brands, we don't need it.

To change the Z offset you can do it by sending M851 Z-1.4
Adjust the -1.4 to fit your nozzle height. Values like -1.5, -1.6, -1.7 will move the nozzle closer to the bed, -1.3, -1.2, -1.1 will move the nozzle away and up from the bed.
Don't forget to do M500 after setting the offset, else it won't save and be back to the old value next time you power on the printer.
Also, if you want to know your offset, send M851 without anything else and it will show the offset in the log.



Also, you can adjust the z offset by using the LCD. I think it is Control -> Motion. There you will have the Z Offset value that the printer use.
If you change offset by using the LCD, store it to memory by going to Control and select "Store memory".
"Restore failsafe" will get the values from Configuration.h and after that you select "Store memory" and it will be stored and used next time you power on your printer.

[NiklasO]

I do a go to home and the 3d touch do a test surface, just in the center of the bed ??

Yes, G28 is just for homing. It will home in the center. To probe your bed, send G28 followed by G29, then print.
You should add
G28
G29
to your end gcode and it will probe the bed every time before it starts the print.

[Rv8]

ok thanks a lot,

I have M851 Z-1.4, but when I'm using the LCD, and set the offset with a piece of paper, the offest is bigger Z-11.99 !
I send this value like that :

M851 Z-11.99 ;
M500 ;

but when I print there is a big gape between extruder and bed !??

It's strange..

[Rv8]

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