Help with M669 etc

luckyflyer

I have my core xy printer setup with (as I stand in front of the printer) the right rear motor going to drive 0 and the left motor going to drive 1, I realize this is reversed from norm but if I can keep it the way it is the wiring looks nicer but certainly can change it if necessary. Also I have my Y optical limit switch at the rear.

M669 K1 ; select CoreXY mode

My M569 config is,
M569 P0.0 S1 ; physical drive 0.0 goes forwards
M569 P0.1 S1 ; physical drive 0.1 goes forwards

The M574 endstop config is,
M574 X1 S1 P"!io1.in" ; configure active-low endstop for low end on X via pin io1.in
M574 Y1 S1 P"!io2.in" ; configure active-low endstop for low end on Y via pin io2.in

The above configuration works except that the prints are mirrored. I then tried with drive 0 going to the right motor and drive 1 going to the left and putting the y endstop at the front of the printer. It now homes at left front and the prints are normal, not mirrored. However I prefer home to be left rear. I'm pretty sure that this can be configured with the right combination of M669, M569 and M574. I have tried several combinations but have not got it to work. Can someone help me out with this?

OwenD

Have you tried

M569 P0.0 S0 ; physical drive 0.0 goes backwards
M569 P0.1 S0 ; physical drive 0.1 goes backwards

luckyflyer

Seems like I did I've tried many, I'll try again and get back.

luckyflyer

That doesn't work, wants to home to the right front.

luckyflyer

M669 is a tough command to fully understand because there is no explanation of what effects different coefficients have on movement for core xy.

OwenD

@luckyflyer
I don't have a corexy but this seems to cover it well
Step by step CoreXY firmware setup

Danal

I am not certain, because I have no way to test this, but I believe this would work for you:

Set it up as though everything were wired to defaults. Then in your M584 (mine looks like this):

; Axis to driver mapping
M584 X0 Y1 U2 Z3:4:5        ; X and Y for CoreXY.  U for toolchanger lock. Z for bed
M584 E1.0:1.1:2.0:2.1       ; Extruders for four tools.

Tell it what drivers X and Y are actually plugged into, like this:

; Axis to driver mapping
M584 X1 Y0 U2 Z3:4:5        ; X and Y for CoreXY.  U for toolchanger lock. Z for bed
M584 E1.0:1.1:2.0:2.1       ; Extruders for four tools.

luckyflyer

I did use M584 to address the wiring issue that I mentioned above. So if I'm not mistaken on a core xy Y is right rear and X is left rear, correct

luckyflyer

I've put it back to home left front, not my first choice but prints normally. I do think it possible to configure the way I would like, I just don't know how to do it.

Danal

@luckyflyer said in Help with M669 etc:

I did use M584 to address the wiring issue that I mentioned above. So if I'm not mistaken on a core xy Y is right rear and X is left rear, correct

Correct, at least for mine where I have rotated (but not mirrored) 0,0 to back right.

Danal

@luckyflyer said in Help with M669 etc:

I've put it back to home left front, not my first choice but prints normally. I do think it possible to configure the way I would like, I just don't know how to do it.

What does your M584 look like now?

Nuramori

It sounds like what you want, is how I have mine running, which is a BLV cube (CoreXY variant). It has the y endstop at the left rear. 0,0 is still at the front left. Does this match your intent? If so I can share my config.g file.

luckyflyer

Current m584,
M584 X0.1 Y0.0 Z0.2 E0.3

luckyflyer

@Nuramori said in Help with M669 etc:

It sounds like what you want, is how I have mine running, which is a BLV cube (CoreXY variant). It has the y endstop at the left rear. 0,0 is still at the front left. Does this match your intent? If so I can share my config.g file.

So when you home does you h.e. move to the left front? I would like for my h.e. to home to the left rear, if yours does that then yes I would like to see your config.g.

Nuramori

When I perform homing on the axis’, the x homes to the left edge, the y homes to the rear where the endstop is.

Nuramori

Here's my config.g file. I am using a toolboard, so there's a bit more than usual complexity I suppose, but I think where you're going to find what you're looking for is the section for "ENDSTOPS", where the y endstop is defined by the maximum position rather than the min. 0 on the y axis is then defined by the combination of the maxima y position and set distance to zero (in my case, 320). To reiterate, my x endstop is located on the left edge, and my y endstop is located at the left rear.

; Configuration file for Duet3 (firmware version 3.01 RC11)
; executed by the firmware on start-up
;
; --------------- Pin/connection Mapping Legend -------------------
; 0.out0      - Bed heater
; 0.out1
; 0.out2
; 0.out3
; 0.out4      - Radiator cooling fan - WC heatsink
; 0.out5
; 0.out6
; 0.out7
; 0.out8
; 0.out9      - Duet board cooling fan
; 0.out4.tach - Radiator cooling fan rpm wire - WC heatsink
; 0.out5.tach
; 0.out6.tach
; 0.io0.in
; 0.io1.in    - Emergency stop switch
; 0.io2.in    - Y max active low endstop switch
; 0.io3.in
; 0.io4.in
; 0.io5.in
; 0.io6.in
; 0.io7.in
; 0.io8.in
; 0.io0.out
; 0.io1.out
; 0.io2.out
; 0.io3.out
; 0.io4.out
; 0.io5.out
; 0.io6.out
; 0.io7.out
; 0.io8.out
; 0.servo, out10 (only on v0.5, not on v0.6)
; 0.pson
; 0.spi.cs0
; 0.spi.cs1
; 0.spi.cs2
; 0.spi.cs3
; 0.temp0      - Bed Thermistor
; 0.temp1
; 0.temp2
; 0.temp3      - Coolant Temp Sensor
; 0.mcu-temp   - MCU sensor
;
;----------Toolboard 1 (CAN ID#20)
; 20.out0      - Hotend Heater
; 20.out1
; 20.out2      - Parts cooler on printhead
; 20.out1.tach
; 20.out2.tach
; 20.io0.in    - Z probe type to bltouch current - Piezo future
; 20.io1.in    - X min active low endstop switch
; 20.io0.out   - GPIO port 0 on toolboard io0, servo mode - BLTouch Z-Probe
; 20.temp0     - Extruder Thermistor
; 20.temp1
; 20.button0
; 20.button1
;
; -----------------------------------------------------------------
;
; General preferences

G4 P2000                          ; Hold your Horses.
G90                               ; send absolute coordinates...
M83                               ; ...but relative extruder moves
G21                               ; Set units to Millimeters
M550 P"DUET3"                     ; set printer name
M575 P1 S1 B57600                 ; Set things up for the PanelDue
M575 P1 S1 B57600                 ; Set things up for the PanelDue

M584 X0.3 Y0.2 Z0.0:0.1:0.4 E20.0 ; set drive mapping to each axis
M669 K1                           ; Select CoreXY mode - New format

; Network
M552 S1                           ; enable network
; M552 P192.168.3.120             ; Static IP Address
M586 P0 S1                        ; enable HTTP
M586 P1 S0                        ; disable FTP
M586 P2 S0                        ; disable Telnet

; Drives
M569 P0.0 S0                      ; physical drive 0 goes backwards - Z Axis Left (1)
M569 P0.1 S0                      ; physical drive 1 goes backwards - Z Axis Right Back (2)
M569 P0.2 S0 D3                   ; physical drive 2 goes backwards - Y Axis, activate Stealthchop
M569 P0.3 S0 D3                   ; physical drive 3 goes backwards - X Axis, activate Stealthchop
M569 P0.4 S0                      ; physical drive 4 goes backwards - Z Axis Right Front (3)
M569 P20.0 S1 D3                  ; physical drive 5 goes forwards - Extruder 1

; Set up three Z-axis location
M671 X-42.5:390.9:390.9 Y172.5:291.5:49.5 S5 ; leadscrews at 1 - left, 2 - rear right and 3 - front right

M92 X199.27 Y199.27 Z397.23 E2700          ; set steps per mm
M350 X16 Y16 Z16 E16 I1                    ; configure micro-stepping with interpolation
M566 X800.00 Y800.00 Z400.00 E240.00       ; set maximum instantaneous speed changes (mm/min)
M203 X12000.00 Y12000.00 Z2500.00 E1200.00 ; set maximum speeds (mm/min)
M201 X6000.00 Y6000.00 Z800.00 E800.00     ; set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30            ; set motor currents (mA) and motor idle factor in percent*100

M84 S30                                    ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                           ; set axis minima
M208 X320 Y320 Z350 S0                     ; set axis maxima

; Endstops

M574 X1 S1 P"20.io1.in"                    ; X min active high endstop switch
M574 Y2 S1 P"0.io2.in"                     ; Y max active high endstop switch

; Z-Probe - BLTouch - *CURRENT*
M574 Z1 S2                                 ; set endstops controlled by probe
M558 P9 C"^20.io0.in" H5 F2000 T12000      ; set Z probe type to bltouch and the dive height + speeds (bltouch NEEDS pullup)
; G31 P100 X28.5 Y-5 Z2.65                 ; set Z probe trigger value, offset and trigger height - 0.25MM NOZZLE
G31 P100 X-29.99 Y1.04 Z0.55               ; set Z probe trigger value, offset and trigger height - 0.40MM NOZZLE

; Z-Probe - PIEZO - *FUTURE*
; M574 Z1 S2                               ; set endstops controlled by probe
; M558 P8 C"20.io0.in" H10 F2000 T20000    ; set Z probe type to PIEZO and the dive height + speeds
; G31 P100 X0 Y0 Z-0.1                     ; set Z probe trigger value, offset and trigger height

G30                                        ; Probe Z

; Configure Heaters and Sensors
M308 S0 P"0.temp0" Y"thermistor" T100000 B3950          ; Configure bed temperature sensor
M950 H0 C"0.out0" T0                                    ; Define heater 0 (bed heater) - bed_heat pin and Temp Sensor 0 
M143 H0 S120 A2                                         ; set temperature limit for heater 0 to 120c
M140 H0                                                 ; Map heated bed to heater 0

M308 S1 P"20.temp0" Y"thermistor" T100000 B3950         ; Configure extruder 1 temperature sensor
M950 H1 C"20.out0" T1                                   ; Define heater 1 (hot-end E0) to use the "20.out0" pin and Temp Sensor 1
M143 H1 S265 A2                                         ; set temperature limit for heater 1 to 265C

M308 S2 P"mcu-temp" Y"mcu-temp" A"Duet Board"           ; Configure MCU sensor
M308 S3 P"temp3" Y"thermistor" T10000 B3988 A"Coolant"  ; Configure coolant sensor

; Configure Fans
M950 F0 C"20.out2" Q100                 ; Define Fan_0 for use - Parts Cooler on Printhead - 4010 fan
M950 F1 C"!0.out4+^0.out4.tach" Q25000  ; Define Fan_1 for use - Radiator cooling - WC heatsink. - PWM fan
M950 F2 C"0.out9" Q25000                ; Define Fan_2 for use - Duet board cooling fan
M950 S0 C"20.io0.out"                   ; Define GPIO port 0 on IO0, servo mode - BLTouch Z-Probe - *CURRENT*
M950 J0 C"^!0.io1.in"                   ; Input 0 uses 0.io1.in pin, pullup enabled

; Fans
M106 P0 S0                          ; set fan 0. Parts Cooler on Printhead
M106 P1 T25:40 H2                   ; Set fan 1. Manages Radiator fan for water-cooled loop.
M106 P2 T35:45 H2                   ; Set fan 2. Manages Duet board fan.

;Set PID values
M307 H0 A289.6 C634.8 D0.9 V23.3 B0 ; disable bang-bang mode for the bed heater and set PWM limit
M307 H1 A561.8 C236.5 D5.8 V23.3 B0 ; disable bang-bang mode for the extruder heater and set PWM limit

; Pressure Advance
M572 D0 S0.3                        ; Set pressure advance to offset elasticity

; Tools
M563 P0 S"Extruder 1" D0 H1 F0      ; define tool 0. Fan 0 operates with an active hot-end
G10 P0 X0 Y0 Z0 R0 S0               ; set tool 0 axis offsets active and standby temperatures to 0C

; Emergency Stop
M574 S1 P"^!0.io1.in"               ; Define Emergency endstop - emergency stop switch condition
M581 P0 S1 T0                       ; Define action to be taken with activation of emergency stop switch

; Miscellaneous
T0                                  ; select first tool

luckyflyer

Thanks I appreciate that.

luckyflyer

Getting late here, I'll check it out tomorrow.

Nuramori

@luckyflyer said in Help with M669 etc:

Getting late here, I'll check it out tomorrow.

Sure. Pay special attention in mine the value of the y endstop configuration. It’s a “Y2” not Y1 as in yours. That is telling the duet that the y endstop is a MAX position for the Cartesian coordinate layout. It will still HOME at the endstop at the back - I think you’re mistaking homing as also being 0,0, but it doesn’t have to be.

dc42

@luckyflyer said in Help with M669 etc:

The above configuration works except that the prints are mirrored. I then tried with drive 0 going to the right motor and drive 1 going to the left and putting the y endstop at the front of the printer. It now homes at left front and the prints are normal, not mirrored. However I prefer home to be left rear. I'm pretty sure that this can be configured with the right combination of M669, M569 and M574. I have tried several combinations but have not got it to work. Can someone help me out with this?

You need to swap the X and Y motor connections over, either physically (as you already tried) or in the M584 command, so that Ymin is towards you and Ymax is away from you. Then change your M574 Y command and homey.g file to home to max Y instead of min Y. Also change homeall.g to home Y to max.