@dc42 I was already on a similar build that fixed the E motor running backwards issue. Is this a newer build than that one?

Edit. I may have answered my own question by clicking on the github issue lol

@frnknstn518 thanks, I'll mark this as solved then.

@Phaedrux I figured out the issue. I had bought pre-made wire harnesses and on the Z wires the insulation was not stripped back where the crimp was. I spliced and re crimped the wires and now have movement!

I am happy to reoprt that three out of three bed heat-ups were successful!
Barring any warnings about safety or other implications, I am calling this issue fixed.

@zemlin said in Height map Z=0 point and Zhome point:

I haven't studied things closely, but it seems that bed mapping may assume z=0 is at xy 0,0

No, it doesn't assume that. The reasons we recommend Z probing at bed centre to home Z are:

Most prints are close to the centre If the bed has a tilt, then the height errors will be more uniformly distributed about Z=0.

It doesn't matter where you put the bed origin. I find it convenient to put it at bed centre, because that makes my prints portable to all my printers if I use the same filament type and nozzle size.

If you home Z and then immediately run mesh compensation (so that the temperature doesn't change significantly between the two operations), you should find that your height map has near zero error close to the XY point where you homed Z.

@deckingman
Between the two of us I think we've added a significant amount of complexity to solve a rare event that is easily handled by proper care and attention by the operator.
Feels like I've been to another OHSA meeting 😂😂

@deckingman I just wanted to mention that it is best practice to use the lowest possible PSU voltage for the EMF calculator, when all motors are running and heaters/fans are on. That's the real back-EMF scenario to figure out borderline values...

@droftarts thank you for your response !

Here is my config

; Configuration file for Duet 3 MB 6HC (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.15 on Mon Jan 09 2023 14:50:13 GMT+0100 (Central European Standard Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"cbmp" ; set printer name ; Network M552 P192.168.1.14 S1 ; disable Telnet ; Drives M569 P0.2 S1 M569 P0.3 S1 ; physical drive 0.2 goes forwards M569 P0.4 S1 ; physical drive 0.3 goes forwards M569 P0.5 S0 ; physical drive 0.5 goes backwards M569 P0.0 S1 ; physical drive 0.0 goes forwards M569 P0.1 S0 ; physical drive 0.1 goes forwards M584 X0.2 Y0.3:0.4 Z0.5 E0.0:0.1 ; set drive mapping M350 X16 Y16 Z16 E16:16 I1 ; configure microstepping with interpolation M92 X64.00 Y64.00 Z1600.00 E415.00:415.00 ; set steps per mm M566 X900.00 Y900.00 Z60.00 E120.00:120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z280.00 E1200.00:1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z40 E250.00:250.00 ; set accelerations (mm/s^2) M906 X2500 Y2500 Z2500 E600:600 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 X355 Y995 Z355 S0 ; set axis maxima ; Endstops M574 X1 S1 P"io0.in" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin io0.in M574 Y1 S1 P"io1.in" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin io1.in ; Z-Probe M950 S0 C"io4.out" ; create servo pin 0 for BLTouch M558 P9 C"io4.in" H5 F120 T6000 R0.3 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X0 Y25 Z4.3 ; set Z probe trigger value, offset and trigger height M556 S50 X0 Y0 Z0 ; set orthogonal axis compensation parameters M557 X2:353 Y26:995 S50 ; define mesh grid M376 H10 ; Heaters M308 S0 P"temp2" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin temp2 M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0 M307 H0 R0.591 K0.132:0.000 D6.17 E1.35 S1.00 B0 ; 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"temp0" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin temp0 M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1 M307 H1 R2.419 K0.333:0.000 D5.21 E1.35 S1.00 B0 V23.8 ; disable bang-bang mode for heater and set PWM limit M143 H1 S280 ; set temperature limit for heater 1 to 280C M308 S2 P"temp1" Y"thermistor" T100000 B4138 ; configure sensor 2 as thermistor on pin temp1 M950 H2 C"out2" T2 ; create nozzle heater output on out2 and map it to sensor 2 M307 H2 R2.509 K0.345:0.000 D4.78 E1.35 S1.00 B0 V23.8 ; disable bang-bang mode for heater and set PWM limit M143 H2 S280 ; set temperature limit for heater 2 to 280C ; Fans M950 F0 C"out3" Q0 ; create fan 0 on pin out9 and set its frequency M106 P0 S1 H1:2 T100 ; set fan 0 value. Thermostatic control is turned on M950 F1 C"out7" Q0 M106 P1 S0 H-1 M106 P1 F0 M950 F2 C"out8" Q0 M106 P2 S0 H-1 M106 P2 F0 ; Tools                                  ; set mixing ratios for tool 2 M563 P0 S"Right Extruder" D0 H1 F1:2 ; define tool 0 G10 P0 X-10 Y0 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C M563 P1 S"Left Extruder" D1 H2 F1:2 ; define tool 1 G10 P1 X10 Y0 Z0 ; set tool 1 axis offsets G10 P1 R0 S0 ; set initial tool 1 active and standby temperatures to 0C ; Accelerometer M955 P0 C"spi.cs3+spi.cs2"; all wires connected to temp DB connector M955 P0 I50 S1344 R10 ; define accelerometer orientation M593 P"ZVDD" F65 ; Custom settings are not defined ; Miscellaneous M911 S22.5 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

And M115 response

M115 FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.4.4 ELECTRONICS: Duet 3 MB6HC v1.01 FIRMWARE_DATE: 2022-10-20 16:19:01

Yes i have double checked the orientation, accelero +x = machine +x ; accelero +z = machine -y

M593 P parameter is temporary i was playing around with it, but 66hz is what i get all the time

You'd have to share your config.g and your cura settings to give us any hope of telling what may be wrong.

@chrishamm Thanks Christian, it makes sense. This is not usually a problem for people in general, as waiting a few seconds longer is not a decisive factor, but in some automated processes, gaining seconds is vital for us.

I will discuss with our client whether dealing with you privately and confidentially on this matter could violate the NDAs signed with them.
I don't think there will be a problem. In the end it benefits all of us.

Best,

@gloomyandy
Thanx!

Topic can be closed 🙂

@chrishamm Thank you for your response.
I will adapt the T parameter of M669 and see how it works.

@Macwolf you measured that with the bed still installed on the frame, right?

Please try to adjusting the back right corner of the frame right Y rail) by .1mm upwards and remeasure.

@dindo59 if it's that far you then you have a wiring error and you are feeding 5V to the 3.3V rail. Correct your wiring before you cause permanent damage. If it's a Duet 2 then this is typically because the PanelDue ribbon cable is plugged into the wrong socket.

@dindo59 i doubt B4138 is the correct for a CR10. they should be B4092.

When do you see the temperature oscillation? If its during heating, have you PID tuned the bed and hotend?

@dc42 Hi

Sorry I was with vacation.

Could you please specify what you mean with the macro's?? and the S parameter?

Hope to hear from you.
Sander

@tmreith related github issue:
https://github.com/Duet3D/RepRapFirmware/issues/624

T3P3 created this issue in Duet3D/RepRapFirmware closed Allow a fixed offset to be applied to a temperature sensor. #624

@dc42 github issue link:

https://github.com/Duet3D/RepRapFirmware/issues/575

moth4017 created this issue in Duet3D/RepRapFirmware closed [Bug]: M584 Duet 3+mini 5 Z motor stalling #575

@dmtulsa You don't say exactly what you doing that won't control the hot end. Is it the controls in DWC? Make sure you are running the same version of DWC as RepRapFirmware, ie DWC v3.4.5. It could be that you are running an old version, where heater control is different.

Your thermistor settings (M308) are using the default thermistor. This is unlikely to be correct. Do you know what thermistors you are using?

It may be better to tune your extruder heater as a tool, rather than the heater itself. Rather than using M303 H1 ... , use M303 T0 ... to tune the tool. See https://docs.duet3d.com/en/How_to_guides/Commissioning#h-7-tune-heaters

If that doesn't help, power off then power on the board, then send M98 P"config.g" to check there are no errors in your config. Send M307 H1 to check that the correct PID values are being used. Post any output if it is not what is expected. Post your full config.g, as you may have errors in the tool configuration that is stopping the heater working.

Ian