Gina

Gottit M557 X25:165 Y15:175 S70 ; Define mesh grid

Thanks - didn't find that. Set values to M557 X20:160 Y15:175 S70 ; Define mesh grid and it's still the same. The probing is well within the print area.

I've read the link you posted above. G29 is recommended and not G32. Yes the blue button itself runs G32 and the bed.g. The drop-down on it includes Mesh Grid Compensation. I guess the probe points in the X direction might be a bit close - 175+24 = 199, but I would have thought it would have skipped the highest X values not the lowest. Still, I'll try changing the mesh grid values. Pity it doesn't allow for a different spacing for X and Y.

I have a smaller bed (200x200 but printing area of 190x190) and using M557 X15:175 Y15:175 S80 ; Define mesh grid Giving probing points of 15,95,175 in X and Y. But it only goes to and probes (95,15) (175,15) (175,95) (95, 95) (95,175) (175,175). ie. no yes yes no yes yes no yes yes It starts off at (15,15) after homing but doesn't probe it.

Dave (tecky), have you used the Mesh Grid Compensation with 9 points (3x3 grid) as yet? I saw your post of the result of a 4 point probe a while back but I haven't seen a 9 point one. I ask because I'm having a problem with the 9 point 3x3 grid. Only probing 6 points and not the first column.

The bed was quite a lot out so I've levelled it and it's within about a mm I reckon. Bed levelling should be able to cope with that. My Titan bed is known to be 3mm higher at the back than the front but the Marlin bed levelling works fine on that. I can't really imagine the Duet is more critical but it's still only probing 6 out of 9 points. It only probes the second and third points in the Y axis. Here's the results of bed levelling.

I guess it could be that the bed is not level enough to start with. I'll try setting it up more level. Here's the result of Mesh Grid Compensation.

Done some wiring tidying up. Been trying to get the Mesh Grid Compensation working but having problems. It only seems to want to probe 6 points out of 9. I've tried various things but it insists on probing fewer than the 9 points set up in a 3x3 matrix. This is the Mesh Grid setup line :- M557 X15:175 Y15:175 S80 ; Define mesh grid And here's the whole config.g :- ; Configuration file for Duet WiFi (firmware version 1.20 or newer) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool on Mon Jan 15 2018 15:49:12 GMT+0000 (GMT) ; General preferences M111 S0 ; Debugging off G21 ; Work in millimetres G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves M555 P2 ; Set firmware compatibility to look like Marlin ; Automatic saving after power loss is not enabled M667 S1 ; switch to CoreXY mode *** Gina added M208 X0 Y0 Z0 S1 ; Set axis minima M208 X190 Y190 Z240 S0 ; Set axis maxima ; Endstops M574 X1 Y1 S0 ; Set active low endstops ********** Gina added M574 Z1 S2 ; Set endstops controlled by probe M558 P4 H7 F600 T6000 I1 ; Set Z probe type to unmodulated and the dive height + speeds *** I1 added speed 600mm/min G31 P500 X24 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height M557 X15:175 Y15:175 S80 ; Define mesh grid ; Drives M667 S1 ; switch to CoreXY mode *** Gina added M569 P0 S0 ; Drive 0 goes forwards M569 P1 S0 ; Drive 1 goes backwards M569 P2 S1 ; Drive 2 goes forwards M569 P3 S0 ; Drive 3 goes backwards M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation M92 X62.45 Y62.45 Z401.02 E783.53 ; Set steps per mm M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min) M203 X6000 Y6000 Z900 E1200 ; Set maximum speeds (mm/min) M201 X500 Y20 Z250 E250 ; Set accelerations (mm/s^2) M906 X1000 Y1000 Z1000 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Heaters M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0 M143 H0 S150 ; Set temperature limit for heater 0 to 150C M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1 M143 H1 S300 ; Set temperature limit for heater 1 to 300C ; Tools M563 P0 D0 H1 ; 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 ; Network M550 P"GinaRep Mini" ; Set machine name M552 S1 ; Enable network ;*** Access point is configured manually via M587 M586 P0 S1 ; Enable HTTP M586 P1 S0 ; Disable FTP M586 P2 S0 ; Disable Telnet ; Fans M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on ; Custom settings are not configured

Very true

That is quite a high steps/mm by may be needed for a heavy bed. My Z steps/mm is just 401 on the Mini. No idea what the maximum speed might be on NEMA 17s. The Duet sure makes the machine "silent running" Noisiest thing is the cooling fan on the hotend and that's pretty darn quiet The ease of changing settings is a sheer joy after all the fussing about with Marlin. All my 3D printers will be using the Duet. Best thing since sliced bread

Ah yes. That is some bed! Very heavy. My Titan uses a 300x300x3mm borosilicate glass plate with silicone heater pad stuck to the underside - 24v 360W. So it's very much lighter than yours. And the Mini is only 200x200mm again with borosilicate glass plate but 12v 220W heater (which I might replace with a mains version). I agree, no operational problem with slow Z drive, just needing more patience

Been adjusting various things including increasing the Z maximum speed to 900mm/min from 180mm/min which was very slow. Have found a problem with the Y endstop - it clashes with a bed support so I've had to alter that. Fine now Bed levelling setup is next... Or maybe tidy up the wiring.

Getting there then Dave That seems a very slow Z axis speed Dave. I have mine at 600mm/min but it's still much slower than my Titan printer and I shall be increasing it.

Now fixed the Z homing Found this in the Z Probe section of the wiki :- This system is more sensible than the Marlin in that it goes to the first bed probe point rather than going to the middle before Z homing. I've always thought it was daft for the Z homing to be in the middle the to move nearly half a diagonal for auto-bed-levelling. ATM Z homing is very slow so I'll increase the speed later. There's several other things to adjust first.

Thought I would do another check on the motor connections for the XY motors and guess what - wrong!! The left-hand motor came off a RepRap printer yet the connections were wrong - could have been the Velleman Kit with the original Velleman control board I guess - maybe that was non-standard. It was my mistake on connecting the other one though and I thought I had checked - twice. Anyway, I've put the connections right and the XY motors are now working Now it's just a case of getting all the movement directions right. I've got the X and Y right and those axes home alright. The Z axis moves in the right direction but the homing is wrong. I guess the homez.g needs looking at. Moving the axes individually from the control panel is whisper quiet

Tomorrow I shall take two brand new NEMA 17 motors (I have several) and connect them to the X and Y motor connectors. I shall crack this!!!

This is weird - both the XY motors growl if either Z or extruder motors are operated from the Duet. Yet the power should only be applied to one of them. This is magic!!

Swapped motors and the extruder and Z axis work off the XY and vice versa. Result - X or Y movement moves the extruder and Z motors. Z movement makes the motor buzz but not move. SO the fault is with the motors - BOTH of them! I think. To confirm I'm heating up the hotend ready to try the extruder which now operates one of the XY motors.

Maybe if I swapped motors around it might shed some light. It's only a matter of moving connectors.

Ah yes - homex lifts the Z (or in this case lowers the bed). That explains why homing X (or Y) moves the Z axis. Still not solved the XY motor problem though.

Found the post where you showed links to your config files Dave, and downloaded your config.g. Saw you had the CoreXY setting in a different place so I tried putting mine there but it made no difference.

I've done that. Here's the latest config.g :- ; Configuration file for Duet WiFi (firmware version 1.20 or newer) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool on Mon Jan 15 2018 15:49:12 GMT+0000 (GMT) ; General preferences M111 S0 ; Debugging off G21 ; Work in millimetres G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves M555 P2 ; Set firmware compatibility to look like Marlin ; Automatic saving after power loss is not enabled M208 X0 Y0 Z0 S1 ; Set axis minima M208 X200 Y200 Z200 S0 ; Set axis maxima ; Endstops M574 X1 Y1 S0 ; Set active low endstops ********** Gina added M574 Z1 S2 ; Set endstops controlled by probe M558 P4 H5 F120 T6000 ; Set Z probe type to unmodulated and the dive height + speeds G31 P500 X24 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height M557 X15:185 Y15:185 S20 ; Define mesh grid ; Drives M667 S1 ; switch to CoreXY mode *** Gina added M569 P0 S1 ; Drive 0 goes forwards M569 P1 S1 ; Drive 1 goes forwards M569 P2 S1 ; Drive 2 goes forwards M569 P3 S0 ; Drive 3 goes backwards M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation M92 X62.45 Y62.45 Z401.02 E783.53 ; Set steps per mm M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min) M203 X6000 Y6000 Z180 E1200 ; Set maximum speeds (mm/min) M201 X500 Y20 Z250 E250 ; Set accelerations (mm/s^2) M906 X1000 Y1000 Z1000 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Heaters M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0 M143 H0 S150 ; Set temperature limit for heater 0 to 150C M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1 M143 H1 S300 ; Set temperature limit for heater 1 to 300C ; Tools M563 P0 D0 H1 ; 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 ; Network M550 P"GinaRep Mini" ; Set machine name M552 S1 ; Enable network ;*** Access point is configured manually via M587 M586 P0 S1 ; Enable HTTP M586 P1 S0 ; Disable FTP M586 P2 S0 ; Disable Telnet ; Fans M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on ; Custom settings are not configured

I think that's as far as I can go ATM. The motors are wired correctly and I would expect an error or fault to affect just one motor not both. From the amount of sound coming from the motors I would think there's plenty of drive current (I set it to 1A with a motor rating of 1.5A). And the other two motors are fine (Extruder and Z axis). There is another "funny". If I try homing X or Y the Z motor runs in addition to noise from the XY motors. Another observation is that after trying an X or Y movement the XY motors are in "hold" mode. Trying to turn them caused them to buzz.

Hmm... that's had no effect! X gives a fast, short "burp" and Y a slower, longer one. Both motors do this together. Also checked that the motors are right way round :- Which they are now but no difference as I expected. That would only make the Y direction wrong.

Found this :- So I've added "M667 S1 ; switch to CoreXY mode" before the drive motor directions.