Hey Everyone,

I have been doing a bit of reading on Non Planar 3D Printing and thought it would be fun to give it a crack. Currently it is only a Linux based version of Slic3r that has the functionality so I followed some instructions of how to set up and build the Linux version in Windows 10 built in Linux Environment and quickly set up the slicer. I don’t have a profile for Slic3r as I usually use cura so there is a wee bit of tuning to do. I am very impressed with the outcome. Here is video

https://youtu.be/8WurP1lujIE

Even with the air pump part cooling I still had issues with it almost hitting the part so I turned it away.

Sam

My understanding is it is not about the ac shorting to the dc circuit but more a potential difference building up between the dc rail and ground. Although you are measuring the output of the dc rail to its own 0v pin giving you 12 or 24v (what ever your power supply is rated to), due to the fact it is not grounded to earth, its has the ability to actually be a lot higher than that with respect to ground. It could be 30v or even higher. If for example the dc circuit is isolated from ground but then touches, that is when it becomes a problem. Sensitive electronics such as sensors etc do not like it.

That is my understanding of it. I am not a sparkie, but am in the pumping and irrigation industry where we have sensors (loop powered pressure and transducers etcm) on 24v power supplies that a) do silly things because of it or b) blow up in rare situations. By binding the 0v to ground it avoids these issues.

Correct me if I am wrong but I believe that is what our sparkie said the reasoning behind it.

Kind Regards,

Sam

I had the same issue with mine. The auto install through dwc failed and I had to update via bossa to get it working again

Cheers
Sam

I agree with @deckingman

Whilst all of the other counters would be nice to have, as a mvp, run hours and axis travel distance would be more than sufficient.

My 2c worth

Sam

I am currently upgrading my printer to run and print at much higher speeds. When I am needing to whip up a prototype, I don’t see why it needs to take 30 hours to do so have been spending a bit of time working on it. I am running the EXP1HCL boards on my x and y. I am running them at 48v and I have had the printer running at 1m/s and 30k acceleration. I have not yet printed at that speed as I have had to remake some parts, in particular the x axis gantry as the aluminium I used was too light and cause no end of grief with bed levelling. I am just waiting on LDO to bring out their high speed steppers with encoders so I can make use of the closed loop functions of the HCL board. I am pretty pleased with it. I also have the orbiter 2 and a magnum+ hotend.

Sam

In New Zealand and also Australia, as we share a lot of the same regs, you are not allowed anymore than 1 ohm of resistance between the exposed metal of a class 1 appliance (which our printers are) and the earth pin on the plug. It’s called earth continuity here. I have a seperate earth wire off the AC bed and also one to the frame. I am sitting at 0.1 ohms with mine.

Regards
Sam

@arcadekilla you show a joiner on the effective CAN out with the white and yellow wires but the bus needs to be terminated with a 120 ohm resistor unless you have soldered the jumper on the back of the tool board. For something that has been around a while now and people have been using, it is a pretty big claim stating that it is a firmware bug.

@NitroFreak And from this thread

https://forum.duet3d.com/topic/11005/news-on-duet-3-release/2

David has said that the Duet 2 will still remain the mainstream board will minor development.

Regards,
Sam

Yeah I have no idea why that line was in there. I copied the restart on power fail from somewhere and it must have been in there. Oh well I am really happy you guys have sorted it for me. I was starting to get a bit deflated.

Same as others, to load and unload filament

Managed to figure it out. In all of my playing around I forgot to change the C parameter back. Now to deal with the tuning as it is sitting there humming

Sam

Hey everyone,

I have finally got my new motors into my printer. I have just got them from LDO and they have the following specs:

0.9 degree
0.9 Ohm
1.8mH Inductance
45N.cm
2.4A
2500CPR encoder

I have set them up and wired them with the pre terminated wires from LDO for the Duet board which was awesome as I had to do no crimping.

That was the easy bit. Now onto the world of hurt I have been putting myself through for the past 4 hours.

Below is an excerpt from my config file for the x and y:

;X and Y
M569.1 P10.0 T2 C7.81 R100 I0 D0 E5:10                                  ; Configure the 1HCL board at CAN address 10 with a quadrature encoder on the motor shaft that has 20 steps per motor full step
M569 P10.0 D4 S0														; Configure the motor on the 1HCL at can address 50 as being in closed-loop drive mode (D4) and not reversed (S0)
M569.1 P11.0 T2 C7.81 R100 I0 D0 E5:10                                  ; Configure the 1HCL board at CAN address 11 with a quadrature encoder on the motor shaft that has 20 steps per motor full step											
M569 P11.0 D4 S0														; Configure the motor on the 1HCL at can address 51 as being in closed-loop drive mode (D4) and not reversed (S0)
M584 X10.0 Y11.0														; Set Drive Mapping
M350 X16 Y16 I1															; configure microstepping
M92 X160 Y160 															; Set Steps Per mm
M566 X800 Y800 															; Set Jerk
M203 X36000 Y36000 														; Set Max Speed
M201 X20000 Y20000 														; Set Max Accel
M906 X2200 Y2200 														; Set Motor Current
M917 X0 Y0 																; Set the closed loop axes to have a holding current of zero

and my homing files are

; homex.g
; called to home the X axis
M569 P10.0 D0           ; Turn off closed loop
M569 P11.0 D0

G91                     ; relative positioning
G1 H2 Z5 F6000          ; lift Z relative to current position\
G1 H1 Y-368.5 F3000 
G1 H1 X-368 F3000       ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F6000          ; go back a few mm
G1 H1 X-240 F240        ; move slowly to X axis endstop once more (second pass)

G90                     ; absolute positioning
G1 X50 F3000            ; Move to a known-safe position
M400                    ; Wait for the move to complete
G4 P500                 ; Wait for the motor to settle
M569 P10.0 D4           ; Turn closed loop back on
M569.6 P10.0 V1         ; Perform the tuning manoeuvres for a quadrature encoder
G1 X0                   ; Move back to X0

G1 H2 Z0 F6000          ; lower Z again

; homey.g
; called to home the X axis

M569 P11.0 D0           ; Turn off closed loop


G91                     ; relative positioning
G1 H2 Z5 F6000          ; lift Z relative to current position
G1 H1 Y-380 F3000       ; move quickly to X axis endstop and stop there (first pass)
G1 H2 Y5 F6000          ; go back a few mm
G1 H1 Y-240 F240        ; move slowly to X axis endstop once more (second pass)

G90                     ; absolute positioning
G1 Y50 F3000            ; Move to a known-safe position
M400                    ; Wait for the move to complete
G4 P500                 ; Wait for the motor to settle
M569 P11.0 D4           ; Turn closed loop back on
M569.6 P11.0 V1         ; Perform the tuning maneuvers for a quadrature encoder
G1 Y0                   ; Move back to X0

G1 H2 Z0 F6000          ; lower Z again

Some people will probably point out that in my X homing, I home Y first. This is intentional at the moment as I have a x switch that is attached to the frame so need to home Y to make sure that the carriage hits the switch. I then always home Y regardless.

The issue I am having is I always fail the tuning after it has homed, stating for both axis

Warning: Driver 11.0 warning: tuning failed
Warning: Driver 11.0 new tuning error(s): The measured motion was less than expected; counts/step is about 6.12.

And because of it, I can not run the printer. Can anyone please point me to where I might be going wrong. It is a CoreXY printer.

Sam

Hey everyone,

I have finally managed to get my hands on some LDO steppers with encoders. It has been a long time coming as they were working some issues out. I have a question with wiring however. I currently have screened cables for my motors, which work ok, however I have never been overly happy with the crimps at the motor end. They are ok but I am worried one day they might let go. The motors came with pre terminate cables for both the motors and encoders. The motors are individual cables that are twisted without an outer sheath, and the encoders are sheathed and heat shrunk at the ends so I am not sure whether they are screened at all. As they are running next to each other, do I need to worry about having them screened at all if I was to use their twisted motor cable that came with them?

Kind Regards,
Sam

@Visionary on a complete side note, I really like you implementation of your bed setup. I have been looking for a way to do that without printing parts. Given me some food for thought

You say your using normally open endstops. I am only doing this off memory as I am on holiday at the moment and am doing this off my phone but I am pretty sure you need to invert the pin as it is recommended to use normally closed. So to do that on the m574 line where you are defining your end stop you need to do P"!xstop"

@dc42 said in 1HCL closed loop steppers on CoreXY:

M350 X16 Y16 I0

Hi David, I gave it a go and it was much worse without the interpolation. On a side note, it doesn't seem you can change that parameter on the fly as I was getting this error and the printer would unhome x and y, but the z was fine

4/20/2022, 6:50:19 AM	M350 X16 Y16 I1
Cancelled printing file 0:/gcodes/Voron_Design_Cube_v7.gcode, print time was 0h 3m
Error: G0/G1: insufficient axes homed
4/20/2022, 6:46:38 AM	M32 "0:/gcodes/Voron_Design_Cube_v7.gcode"
File 0:/gcodes/Voron_Design_Cube_v7.gcode selected for printing
4/20/2022, 6:45:32 AM	M350 X16 Y16 I0
Cancelled printing file 0:/gcodes/Voron_Design_Cube_v7.gcode, print time was 0h 1m
Error: G0/G1: insufficient axes homed
4/20/2022, 6:44:00 AM	M32 "0:/gcodes/Voron_Design_Cube_v7.gcode"
File 0:/gcodes/Voron_Design_Cube_v7.gcode selected for printing

Regards,
Sam

@dc42 Hi David, Sorry was away on holiday. Please see my config file

; Configuration file for Duet 3 (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Wed Dec 08 2021 21:12:19 GMT+1300 (New Zealand Daylight Time)

; General preferences
M575 P1 S1 B57600                                               		; enable support for PanelDue
G90                                                             		; send absolute coordinates...
M83                                                             		; ...but relative extruder moves
M550 P"Sam's Printer"                                           		; set printer name
M669 K1                                                         		; select CoreXY mode

; Wait a moment for the CAN expansion boards to start
G4 S2

; Network
M552 P0.0.0.0 S1                                                		; enable network and acquire dynamic address via DHCP
M586 P0 S1                                                      		; enable HTTP
M586 P1 S0                                                      		; disable FTP
M586 P2 S0                                                      		; disable Telnet

; Drives
M569 P10.0 S1 F8                                                 		; physical drive 10.0 goes forwards
M569 P11.0 S1 F8                                                 		; physical drive 11.0 goes forwards
M569 P0.2 S0 F10                                                 		; physical drive 0.2 goes forwards
M569 P0.3 S0 F10                                                   		; physical drive 0.3 goes forwards
M569 P0.4 S1 F10                                                   		; physical drive 0.4 goes forwards
M569 P0.5 S1 F10                                                   		; physical drive 0.5 goes forwards
M569 P20.0 S1                                                  			; physical drive 20.0 goes forwards
M584 X10.0 Y11.0 Z0.2:0.3:0.4:0.5 E20.0 P6                    			; set drive mapping
M350 X16 Y16 Z16:16:16:16 U16 V16 W16 E16 I1                       		; configure microstepping with interpolation
M92 X80 Y80 Z400:400:400:400 U400 V400 W400 E690	       				; set steps per mm
M566 X800 Y800 Z120:120:120:120 U120 V120 W120 E300  	       			; set maximum instantaneous speed changes (mm/min)
M203 X60000 Y60000 Z400:400:400:400 U400 V400 W400 E7200       			; set maximum speeds (mm/min)
M201 X30000 Y30000 Z250:250:250:250 U250 V250 W250 E10000          		; set accelerations (mm/s^2)
M906 X1550 Y1550 Z1800:1800:1800:1800 U1800 V1800 W1800 E1200 I60   	; 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 X363.5 Y352 Z412:412:412:412 U412 V412 W412 S0                     ; set axis maxima
M671 X-45:-46:408:405 Y92:296:300:92 S3.0  								; Define the X and Y coordinates of the lead screw. Motor order: FL (1), RL (2), RR (3), FR (4).Snn Maximum correction in mm to apply to each leadscrew

; Endstops
M574 X1 S1 P"10.io0.in"                                       	 		; configure switch-type (e.g. microswitch) endstop for low end on X via pin 11.io0.in
M574 Y1 S1 P"10.io1.in"                                        			; configure switch-type (e.g. microswitch) endstop for low end on Y via pin 11.io2.in
M574 Z1 S2                                                      		; configure Z-probe endstop for low end on Z

; Z-Probe
M558 P8 R1.0 C"!^20.io2.in" H5 F250		                            	; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y0 Z-0.20                                          		; set Z probe trigger value, offset and trigger height
M557 X0:363.5 Y0:352 S20                                     			; define mesh grid                                       	

; Heaters
M308 S0 P"spi.cs0" Y"rtd-max31865"                              		; configure sensor 0 as PT100 on pin spi.cs1
M950 H0 C"out1" T0                                              		; create bed heater output on out0 and map it to sensor 0
M307 H0 R0.200 K0.148:0.000 D38.10 E1.35 S1.00 B0                       ; disable bang-bang mode for the nozzle heater and set PWM limit
M140 H0                                                         		; map heated bed to heater 0
M143 H0 S150                                                    		; set temperature limit for heater 0 to 150C
M308 S1 P"20.temp0" Y"pt1000"                                  			; configure sensor 1 as PT1000 on pin 123.temp0
M950 H1 C"20.out0" T1                                          			; create nozzle heater output on 123.out0 and map it to sensor 1
M307 H1 R2.366 K0.162:0.000 D9.88 E1.35 S1.00 B0 V24.0					; PID control Magnum Plus PT1000  
;M307 H1 R2.104 C430.2 D9.13 S1.00 V24.2									; PID control Magnum Plus PT1000                                                		
M143 H1 S400                                                    		; set temperature limit for heater 1 to 400C

; Fans

; Part Cooling Pump
			
M950 F3 c"out2" Q25000													; Assign Part Cooling Fan to Heater Port 2
M106 P3 X0.5 B0 H-1 C"Part Cooling" 									; Part Cooling Fan Remap to Heater 2		 

; Water Cooling

M950 F4 c"!out6+out6.tach"												; Water Cooling Pump Output
M106 P4 H1 B15 L0.2 X.75 T50 C"Extruder"								; Water Cooling Pump Start
M308 S10 P"temp0" Y"thermistor" A"Water Temp" T10000 B3950				; Create Heater for Cooling Water
M950 F0 c"!out9" Q25000													; Assign Fan 0 to Fan 0 Port and Inverse
M106 P0 H10 L.3 B.5 T60:80 C"Radiator"									; Set fan 4 PWR fan. Turns on when Radiator temperature (heater 103), hits 30C and full speed when the temperature reaches 60C

;Board Cooling Fan					

M308 S20 P"mcutemp" Y"mcutemp" A"Duet Board" 							; Map Duet MCU to the Extra Table
M308 S21 P"10.mcutemp" Y"10.mcutemp" A"Board 10 MCU"					; Map Duet Drivers to the Extra Table
M308 S22 P"11.mcutemp" Y"11.mcutemp" A"Board 20 MCU"					; Map Duex2 Driver to the Extra Tabl
M308 S23 P"20.mcutemp" Y"20.mcutemp" A"Tool Board MCU"					; Map Duex2 Driver to the Extra Tabl
M308 S24 P"temp1" Y"thermistor" A"Control Area" T100000 B3950  			; Create Virtual Heater for Control Area
M950 F1 c"!out4+out4.tach" Q25000										; Assign Fan 1 to Fan 1 Port and Inverse
M106 P1 L.3 B.5 T40:65 H20 C"Duet Fan"									; Set fan 1 PWR fan. Turns on when MCU temperature, hits 45C and full when the MCU temperature reaches 65C or if any TMC2660 drivers (virtual 		
M950 F2 c"!out5+out5.tach" Q25000										; Assign Fan 2 to Fan 2 Port and Inverse
M106 P2 L.3 B.5 T40:65 H22 C"Control Area"								; Set fan 2 PWR fan. Turns on when MCU temperature, hits 45C and full when the MCU temperature reaches 65C or if any TMC2660 drivers (virtual 

; Tools          		
M563 P0 S"Extruder 1" D0 H1 F3 											; 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
M955 P20.0 I24															; Accelerometer
M572 D0 S0.005															; Pressure Advance
;M592 D0 A0.009541 B0.001755											; Non Linear Extrusion 0.4mm pla
M593 P"zvddd" F60														; Input Shaping


;Filament out sensor

M591 D0 P3 C"20.io1.in" S0 R70:130 L26.26 E3.0 							; magnet sensor for extruder 0 is connected to E2 endstop input, enabled, sensitivity 24.8mm.rev, 70% to 130% tolerance, 3mm detection length 25.88			
M591 D0 																; display filament sensor parameters for extruder drive 0

;Tool Board Buttons
M950 J10 C"20.button1"
M581 T2 P10 S1

; Custom settings are not defined

; Miscellaneous
M911 S20 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000"             			; set voltage thresholds and actions to run on power loss

Cheers Sam

@dc42 that was open loop. I am waiting until LDO have their “fast” steppers sorted with encoders before I use the board to its full potential. I am running the boards at 48v’s if that means anything/ helps

@dc42 hmm, I may need to play around with it then. I have done a major upgrade to the printer with new mounts made of aluminium and changing belts from 6mm to 9mm and then the new boards and it is substantially louder. Here is a video of it now. I will find one previously

https://youtube.com/shorts/nAJHBpGT3ow?feature=share

@dc42 I saw you posted about the noise using the HCL boards. Is that in both open and closed loop modes that you will try and reduce noise as man it’s loud. I thought it was because I put sides on it that’s making it noisey but I took them off and it’s still noisey.