3 Motor Z axis Automatic bed levelling using G32 RRF 3.01-rc3

fcwilt

Hi,

I cannot make sense out of your bed.g file and your M671 command.

What are the X and Y axis min/max values?

Do you have a diagram showing the position of your lead screws in relation to the bed?

Frederick

Lasko

@fcwilt Thank you for your response,

i just noticed that I used commata instead of decimal points at the M671 command, what could be problematic...
The x-Coordiantes of the leadscrews are +396mm, +171mm and -54 mm. The y-Coordinates of the leadscrews are -86.82mm, +235,88mm and -86.82mm. The S parameter allows height correction up to 5mm per leadscrew.

This is my config.g

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"My Printer"                             ; set printer name


; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet

; Drives
M569 P0 S1                                     ; physical drive 0 goes forwards		(X-Motor)
M569 P1 S1                                     ; physical drive 1 goes forwards		(Y-Motor)
M569 P2 S1                                     ; physical drive 2 goes forwards		(Z-Motor front left)
M569 P3 S1                                     ; physical drive 3 goes forwards		(Z-Motor back mid)
M569 P4 S1									   ; physical drive 4 goes forwards		(Z-Motor front right)
M569 P5 S1									   ; physical drive 5 goes forwards		(Extruder1)
M584 X0 Y1 Z2:3:4 E5                           ; set drive mapping 					(0-X, 1-Y, 2,3,4-Z, 5-E)

M669 K1                                        ; select CoreXY mode		(Muss nach M584 kommen, da dort neue Achsen definiert werden)

M671 X-396:171:-54 Y--86,82:235,88:-86,82 S5  ; Coordiantes of the three Z-Leadscrews

M350 X16 Y16 Z16 E16 I1                        ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z1600 E420.00              ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00            ; set maximum instantaneous speed changes (mm/min)
M203 X3000.00 Y3000.00 Z100.00 E1200.00        ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00            ; set accelerations (mm/s^2)
M906 X1330 Y1330 Z1330 E800 I30                ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                               ; set axis minima
M208 X320 Y272 Z300 S0                         ; set axis maxima

; Endstops
M574 X1 S1 P"xstop"                            ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop"                            ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S1 P"zstop+e0stop+e1stop"              ; configure active-high endstops for low end on Z via pin zstop

; Z-Probe
M558 P9 C"^zprobe.in" H10 F150 T2000           ; BL-Touch Implementation: Set Input Pin
M950 S2 C"duex.pwm5"						   ; BL-Touch Implementation: Set PWM Pin 
G31 X0 Y-47.53 Z2.7 P25                        ; BL-Touch Implementation: Set Z probe trigger value, offset and trigger height
M557 X25:105 Y25:105 S20                         ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                          ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B1 S1.00                               ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                        ; map heated bed to heater 0
M143 H0 S120                                   ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4138  ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                           ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                               ; disable bang-bang mode for heater  and set PWM limit

; Fans
M950 F0 C"fan0" Q500                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                           ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                              ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                               ; define tool 0
G10 P0 X0 Y0 Z0                                ; set tool 0 axis offsets
G10 P0 R0 S0                                   ; set initial tool 0 active and standby temperatures to 0C

Before running my bed.g file, I home every axis with the opctical endstops at every leadscrew. Because this is not that exact, I want to level the bed using the BL-Touch afterwards. To Do this, i reconfig the endstop definition like this:

M574 Z1 P"nil"              ; deactivate leadscrew endstops
M574 Z1 S2		 	; Z1: Enstop at low end, S2: Using Z-Probe

After that is done, i run my bed.g

I hope you understand better what I did there now

Greetings,
Lasko

fcwilt

Hi,

In the M671 command you have a hyphen after the X and the Y. Why is that?

I don't know if commas are allowed in place of decimal points.

And unless I am confused there is no reason to disable your Z end stops to use the Z probe for auto bed leveling.

I didn't when I experimented with auto bed leveling and it all worked fine.

Frederick

Phaedrux

@Lasko Please create a new thread for your issue rather than tacking on to the end of someone else's solved issue.

Lasko

@Phaedrux
I would do it, but my problem got solved by @frederikv

The problem was the commata and the "-" in the M671 command

I chnaged a lot of code because it didn't work as I wanted for a long time. Thank you @frederikv for the Help!

Greetings,
Lasko