IDEX HOMING ISSUES
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Ive just recently pulled a long standing project out of retirement. Vivedin0 T REX 3 Idex 400x400x500.
MB6HC version 3.5.1 (2024-04-19 14:30:55) running on Duet 3 MB6HC v1.01 (SBC mode)
EXP3HC rev 1.01 or earlier firmware version 3.5.1 (2024-04-19 14:42:54)
TOOL1LC rev 1.1 or later firmware version 3.5.1 (2024-04-19 14:42:41)
TOOL1LC rev 1.1 or later firmware version 3.5.1 (2024-04-19 14:42:41)
All boards on 3.5,1. Used the 3.5 configurator to setup initially and got nothing but errors and was a major headache so went through the configurator for 3.4 and adjusted from there.My issues are with homing as it seems to be hit and miss on x and y axis and z is also hit and miss. Homing was fine and once i started to set the offsets, everything has stopped working. At current the x axis will do the "double tap" mid travel and then slowly creep along until it stops and errors out. The y axis will move a small amount in the opposite direction from the end stop and error out or it will travel to the endstop a short distance and then travel until it can physically no longer move. The z probe only does 1 touch off as opposed to the expected "double tap". U axis works fine, homes as expected, does the double tap and is all good which leaves me confused as to why the x, y and z axis are good one second then dont want to work again.
Attached are the config.g, homeall.g, homex.g, homey.g, homeu.g.
Thanks for the help and any insight as to what/wehere im missing and why this is going backwards.``
config.g
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code_text; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.4.1 on Sun May 26 2024 18:23:02 GMT+0800 (Australian Western Standard Time) ; General preferences M575 P1 S1 B57600 ; enable support for PanelDue G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Duet 3" ; set printer name ; Drives M569 P0.0 S1 ; X physical drive 0.0 goes forwards M569 P0.1 S1 ; U physical drive 0.1 goes forwards M569 P0.2 S0 ; Y physical drive 0.2 goes backwards M569 P0.4 S1 ; Z1 physical drive 0.4 goes forwards M569 P0.5 S0 ; Z2 physical drive 0.5 goes forwards M569 P21.0 S1 ; physical drive 121.0 goes forwards M569 P22.0 S1 ; physical drive 122.0 goes forwards M584 X0.0 Y0.2 Z0.4:0.5 U0.1 E21.0:22.0 ; set drive mapping M350 X16 Y16 Z16 E16:16 U16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z800.00 U80.00 E420.00:420.00 ; set steps per mm M566 X900.00 Y900.00 Z60.00 U900.00 E60.00:60.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z180.00 U6000.00 E200.00:200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 U500.00 E100.00:100.00 ; set accelerations (mm/s^2) M906 X800 Y1000 Z800 U800.00 E500:500 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Create a tool that uses the low end (X) carriage M563 P0 D0 H1 F0 ; tool 0 uses extruder 0, heater 1 and fan 0 G10 P0 X0 Y0 Z0 S0 R0 ; set tool 0 offsets and temperatures ; Create a tool that uses the high end (U) carriage M563 P1 D1 H2 X3 F1 ; tool 1 uses extruder 1, heater 2, fan 1, and maps X to U G10 P1 Y0 U0 Z0 S0 R0 ; set tool 1 offsets and temperatures ; Create a tool that prints 2 copies of the object using both carriages ;M563 P2 D0:1 H1:2 X0:3 F0:2 ; tool 2 uses both extruders, hot end heaters and fans, and maps X to both X and U ;G10 P2 X50 Y0 U-50 S0 R0 ; set tool offsets and temperatures ;M567 P2 E1:1 ; set mix ratio 100% on both extruders ; Axis Limits M208 X-43 Y0 U3 Z0 S1 ; set axis minima M208 X403 Y430 U450 Z500 S0 ; set axis maxima ; Endstops M574 X1 S1 P"io1.in" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin io1.in M574 Y1 S1 P"!io3.in" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin !io3.in M574 U2 S1 P"io2.in" ; configure switch-type (e.g. microswitch) endstop for high end on U via pin io2.in ; Z-Probe M950 S0 C"21.io0.out" ; create servo pin 0 for BLTouch M558 P9 C"21.io0.in" H5 F100 T6000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X10 Y43 Z1.56 ; set Z probe trigger value, offset and trigger height - lower number makes distance to bed greater M557 X15:385 Y15:385 S25 ; define mesh grid ; Heaters M308 S0 P"temp1" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 0 as thermistor on pin temp1 M950 H0 C"out1" T0 ; create bed heater output on out1 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"21.temp0" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin 121.temp0 M950 H1 C"21.out0" T1 ; create nozzle heater output on 121.out0 and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S300 ; set temperature limit for heater 1 to 300C M308 S2 P"22.temp0" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 2 as thermistor on pin 122.temp0 M950 H2 C"22.out0" T2 ; create nozzle heater output on 122.out0 and map it to sensor 2 M307 H2 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H2 S300 ; set temperature limit for heater 2 to 300C ; Fans M950 F0 C"21.out2" Q500 ; create fan 0 on pin 121.out2 and set its frequency M106 P0 S1 H1 T45 ; set fan 0 value. Thermostatic control is turned on M950 F1 C"22.out2" Q500 ; create fan 1 on pin 122.out2 and set its frequency M106 P1 S1 H2 T45 ; set fan 1 value. Thermostatic control is turned on ; Tools M563 P0 S"Tool 0 Left" 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 M563 P1 S"Tool 1 Right" D1 H2 F0 ; define tool 1 G10 P1 X0 Y0 Z0 ; set tool 1 axis offsets G10 P1 R0 S0 ; set initial tool 1 active and standby temperatures to 0C ; Custom settings are not defined ; Miscellaneous ;M501 ; load saved parameters from non-volatile memory ;T0 ; select first tool homell.gcode_text
; called to home all axes ; ; generated by RepRapFirmware Configuration Tool v3.4.1 on Sun May 26 2024 18:23:03 GMT+0800 (Australian Western Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-43 Y-430 U0 F1800 ; move quickly to X Y and U axis endstops and stop there (first pass) G1 H2 X5 Y5 U-5 F6000 ; go back a few mm G1 H1 X-43 Y-4300 U0 F360 ; move slowly to X Y and U axis endstops once more (second pass) G1 F6000 X243 Y200 G30 G90 ; absolute positioning G29 S1 ; this loads the contents of /sys/heightmap.csvcode_text
; homey.g ; called to home the Y axis ; ; generated by RepRapFirmware Configuration Tool v3.4.1 on Sun May 26 2024 18:23:04 GMT+0800 (Australian Western Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 Y-430 F5000 ; move quickly to Y axis endstop and stop there (first pass) G1 H2 Y5 F6000 ; go back a few mm G1 H1 Y-430 F360 ; move slowly to Y axis endstop once more (second pass) G90 ; absolute positioning ; homex.g ; called to home the X axis ; ; generated by RepRapFirmware Configuration Tool v3.4.1 on Sun May 26 2024 18:23:04 GMT+0800 (Australian Western Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-43 F5000 ; move quickly to X axis endstop and stop there (first pass) G1 H2 X5 F6000 ; go back a few mm G1 H1 X-43 F360 ; move slowly to X axis endstop once more (second pass) G90 ; absolute positioningcode_text
; homeu.g ; called to home the U axis ; ; generated by RepRapFirmware Configuration Tool v3.4.1 on Sun May 26 2024 18:23:04 GMT+0800 (Australian Western Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 U450 F5000 ; move quickly to U axis endstop and stop there (first pass) G1 H2 U-5 F6000 ; go back a few mm G1 H1 U450 F360 ; move slowly to X axis endstop once more (second pass) G90 ; absolute positioning -
This post is deleted! -
@Rollux my homall.g
M561 G91 G1 H2 Z5 F6000 ; raise head 4mm to keep it clear of the bed G1 H1 X-35 Y-245 U355 F3000 ; coarse home X, Y and U G1 X4 Y4 U-4 F3000 ; move 4mm away from the homing switches G1 H1 X-400 Y-245 U400 F600 ; fine home X, Y and U G90 ; absolute positioning ; Now home Z using the Z probe G1 X170 Y110 F3000 ; move to bed centre for probing G30 ; probe the bed and set Z height G1 x-35 y-245 U365 F3000 G29 S1Love my Duet 3 Mini.
https://www.instagram.com/proschi3d
https://youtube.com/@proschi3d
https://www.proschi3d.de -
@Proschi78 Cheers for that, adjusted the stops to both min and max and still the same issue as follows.
X axis moves 10mm, stop, feed another 5mm (effectivevely the "double tap" without touching the endstop) and then stop.
Y axis moves 5mm in the opposite direction of the end stop and moves no further.
U axis homes as expected.
Bltouch now fails to deploy the probe.Hard power off reset.
Home all, axis work as expected.
Try both home all and individual homing and all but the U axis fails, showing movements as described above. Zero consistency in why the homing of the axis is random at best.
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@Rollux Thats my Home U
; generated by RepRapFirmware Configuration Tool v3.3.14 on Wed Nov 16 2022 15:37:19 GMT+0100 (Mitteleuropäische Normalzeit) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 U430 F3000; move quickly to U axis endstop and stop there (first pass) M400 G1 H2 U-5 F6000 ; go back a few mm G1 H1 U430 F360 ; move slowly to U axis endstop once more (second pass) G1 H2 Z-5 F6000 ; lower Z again G90 ; absolute positioningthe only thing that strikes me is that your G30 for G90 is in homeall.g
Love my Duet 3 Mini.
https://www.instagram.com/proschi3d
https://youtube.com/@proschi3d
https://www.proschi3d.de -
@Proschi78 U axis is the only axis that is working as it should. X and y are not for some reason not working properly.
Have erased and re flashed the sd card, tried a fresh config from the 3.5 configurator and it gets even worse i.e x axis goes the opposite direction to the end stop regardless of changing directions, min/max parameters, y axiis jolts and stops.
as for the 3.4 config, x axis speeds up then slows down, travels along incredibly slowly then does it's double tap. Y axis is hit and miss as to whether it will home or jolt and stop. U axis on 3.4 config works as expected every time without fail. very confusing as there is zero consistency as to the behaviors as when all axis will home, they wont home again due to the aforementioned erratic behaviors. -
@Rollux Are your end stops working properly? Are the motors running in the right direction?
Love my Duet 3 Mini.
https://www.instagram.com/proschi3d
https://youtube.com/@proschi3d
https://www.proschi3d.de -
@Proschi78 end stops trigger when either touched by motor or by finger for testing, motors all go in correct direction (when working). When homing z, the axis still drops back 5 mm after touching off, lifting 5 and dropping again, these lines have been removed so shouldn't be doing that but only probes once and not twice.
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@Rollux Looking at your config.g, unless I missed it, I don't see any M669 command to define the Kinematics for your machine. I'm not sure what the default is but it may be Cartesian - it almost certainly won't have a U axis by default. Send M669 without any parameters to see what it reports. Link to documentation is here https://docs.duet3d.com/User_manual/Reference/Gcodes#m669-set-kinematics-type-and-kinematics-parameters
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@deckingman said in IDEX HOMING ISSUES:
M669
6/3/2024, 4:48:42 PM M669
Kinematics is Cartesian, no segmentation, matrix:
1.00 0 0 0
0 1.00 0 0
0 0 1.00 0
0 0 0 1.00im wondering if there is some stuff "stuck" in the mb6hc cache/memory that might be affecting things?
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@Rollux
increase the x value to x-450; called to home all axes ; ; generated by RepRapFirmware Configuration Tool v3.4.1 on Sun May 26 2024 18:23:03 GMT+0800 (Australian Western Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-450 Y-430 U0 F1800 ; move quickly to X Y and U axis endstops and stop there (first pass) G1 H2 X5 Y5 U-5 F6000 ; go back a few mm G1 H1 X-450 Y-4300 U0 F360 ; move slowly to X Y and U axis endstops once more (second pass) G90 G1 F6000 X243 Y200 G30 ; absolute positioning G29 S1 ; this loads the contents of /sys/heightmap.csvLove my Duet 3 Mini.
https://www.instagram.com/proschi3d
https://youtube.com/@proschi3d
https://www.proschi3d.de -
@Proschi78
Increased the x value to x-450.
Individual homing works fine when selected separately.
Home all on the other hand is inconsistent still. During "home all", when the x axis triggers the end stop, the y axis will also trigger even though it has not yet hit the end stop. Bltouch will lower, trigger, raise 5mm then drop 5mm (not sure where else the lines of code for this are found as i have removed all i can find as i want the z axis to not drop down after probing).
Also, the z axis moves up or down when making manual moves via the panel due or dwc. Ifeel there is something somewhere that is conflicting. All the boards were well outdated (3.3 beta from memory) as they have been sitting for a while so wondering if a hard reset of the main board and the 3xc are in order? -
@Rollux
try this as homeallM561 G91 G1 H2 Z5 F6000 ; raise head 4mm to keep it clear of the bed G1 H1 X-450 Y-450 U0 F3000 ; coarse home X, Y and U G1 X5 Y5 U-5 F3000 ; move 4mm away from the homing switches G1 H1 X-400 Y-430 U0 F600 ; fine home X, Y and U G90 ; absolute positioning ; Now home Z using the Z probe G1 X243 Y200 F3000 ; move to bed centre for probing G30 ; probe the bed and set Z height G1 x-450 y-430 U0 F3000 G29 S1Love my Duet 3 Mini.
https://www.instagram.com/proschi3d
https://youtube.com/@proschi3d
https://www.proschi3d.de -
@Proschi78
Y axis doesnt move. Wont re home manually without a re boot. Reboot the board, Y axis "triggers" at the same point as the x axis regardless of position.
Thinking will reset the mainboard and re flash firmware as something may be hanging around from all the updates and the like. -
@Rollux If all the individual homing files work, then you could call them individually for home all.
e.g. homeall could be..........
M98 P"homex.g" M98 P"homeu.g" M98 P "homey.g" M98 P"homez.g"Try that - if it works, then the problem is with your homeall.g, if it doesn't then the problem is elsewhere.
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@deckingman
Success there on the first try. Then move everything around and try again. X and U axis home perfectly. . Y axis jumps and then does nothing and get the following error: Error: in file macro line 17: M98: expected a string expression.Going to have a look at the y axis endstop
m119
Endstops - X: at min stop, Y: at min stop, Z: no endstop, U: at max stop, Z probe: not stoppedAs it is one the "pcb board" style ones, wondering if it has failed but that doesnt explain why it works once or twice then nothing.
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Replaced the endstop with a pare makerbot pcb style. Same issue. Check wiring, all is good. Hard reset. All homed perfectly, repeatedly. Then back to the same issue of the y axis bumping in the opposite direction if the end stop and failing to home.
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"Home all" using individual axis works as expected. However, homing individual axis via dwc or panel due, Y axis does not want to work. Incredibly confusing.
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Current homeall.g
This works somewhat, the U axis homes after x,y,z regardless of U axis position.Also when homing z, the z jumps up and down and the x and y jump around. Video Attached of whats happening.
G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-450 F5000 ; move quickly to X Y and U axis endstops and stop there (first pass) G1 H1 U0 F5000 G1 H1 Y-450 F5000 G1 H2 X5 F6000 ; go back a few mm G1 H2 U-5 F6000 G1 H2 Y5 F6000 G1 H1 X-450 F360 ; move slowly to X Y and U axis endstops once more (second pass) G1 H1 U0 F360 G1 H1 Y-450 F360 G1 F6000 X243 Y200 G30 G90 ; absolute positioning G29 S1 ; this loads the contents of /sys/heightmap.csv [Home All.mp4](/assets/uploads/files/1717502002687-home-all.mp4)
