@dc42 I wonder if that pin became dry when it overheated, as I have had it installed for at least two years without issue.
I hadn't realised it wasn't manufactured by you guys. I might wire the fan back to the mainboard for now while I order and wait for a genuine board to arrive.
Posts made by nick9one1
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RE: Heater 1 fault: failed to read sensor: badVssa
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RE: Heater 1 fault: failed to read sensor: badVssa
@dc42 Thanks. I've pulled off the 1LC to clean with IPA. I think I've spotted the problem.
It looks like something has caused the IC controlling Out 1 to blow.
I can move the part cooling fan down to Out2 to reatin PWM but it sounds like there isn't anywhere else on the 1LC for the extruder fan?
As far as I can see, my options are to connect it to VIN (it will obviously always be running).
Wire it back to the main board
Replace the 1LC.Can you suggest anything else I've missed?
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RE: Heater 1 fault: failed to read sensor: badVssa
I've installed a new part cooling fan, and the problem persists. I think the issue is with 'Out1'.
this is my current setup;
Would it be possible to move the hotend/extruder fan to IO2?
thi swould free up out2 (which seems to have speed control) for me to connect the part cooling fan? -
RE: Heater 1 fault: failed to read sensor: badVssa
@nick9one1 46cf078a-f2e2-4dd5-a0c5-c40437b87824-20240422-1131-39.9347558.mp4
It looks like it might be related to the part cooling fan, which is why it happens at layer 2.
Disconnecting the part cooling fan allows the print to finish -
RE: Heater 1 fault: failed to read sensor: badVssa
@chrishamm thanks. Just swapped the thermistor out including a new JST ZH connector, but I still have the same issue.
While I was testing, I notice a complete break in the circuit causes the temp to read -273, and a dead short reads at 2000C. So It does look like a wiring issue, but I can't see how I can still have it with a new thermistor
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Heater 1 fault: failed to read sensor: badVssa
I've just started getting the fault "Heater 1 fault: failed to read sensor: badVssa" on my toolboard LC1, and the temp shoots up to 2000C.
After resetting the board the temp reverts to the correct value.I have noticed that the error always occurs at the start of the 2nd layer, no matter how fast or long the first layer takes to print. I've tested with old files that have previously printed fine.
I have also left the printer idling at 220C for 30 mins with no error, only for it to happen as soon as a 3dbenchy hits layer 2.
I've tried both temp inputs on the 1LC, both have the same behaviour.Does this sound like a thermistor problem, or a board fault? thanks
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RE: great prints with PLA, but terrible with pre-foamed LW-PLA
@jens55 I havent, but the filament is new and was vacuum packed, with dessicant.
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RE: great prints with PLA, but terrible with pre-foamed LW-PLA
@tas travel is set in the slicer at 150mm sec.. which seems quite fast already?
30mm sec left, 60mm sec right
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RE: great prints with PLA, but terrible with pre-foamed LW-PLA
@tas thanks. Will print another tower at 30mm sec retraction (half what I previously set)
I did briefly test with the extra restart amount but it makes the prints really ugly with lots of blobs
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great prints with PLA, but terrible with pre-foamed LW-PLA
I'm having trouble getting my printer dialed in with polymaker pre-foamed lw-pla from colorfabb.
I seem to get a lot of stringing during the travel moves, which causes under-extrusion.
you can see this in the image below.PLA was printed at 230C and 0.2mm retraction at 60mm/sec
lw-pla PLA was printed at 190C and 0.8mm retraction at 60mm/secits is a very short direct drive so normally I need very little retraction.
I then went on to print a temp tower and a few retraction tests in the LW-PLA
Temp doesn't seem to make any difference, but the manufacturer says 190-210cI then went on to print some retraction tests in the lw-pla at 190C.
To me they pretty much all look the same. 6mm is a huge amount of retraction.To put this in perspective, this retraction tower was printed with the same profile, but at 230C in normal pla. the top of the tower is 0.4mm retraction
Any suggestions on what to try next?
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RE: does my height map look correct?
; Configuration file for Duet WiFi (firmware version 3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.2.3 on Wed Jun 02 2021 18:38:31 GMT+0800 (中国标准时间) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"BLV mgn Cube" ; set printer name M669 K1 ; select CoreXY mode ; Network M552 S1 ; enable network M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet G4 S1 ;wait for expansion boards to start ; Drives M569 P0.0 S0 D2 ; X motor runs forwards M569 P0.1 S1 D2 ; Y motor runs forwards M569 P0.2 S1 D2 ; physical drive 0.2 goes backwards M569 P0.3 S1 D2 ; physical drive 0.2 goes backwards M569 P0.4 S1 D2 ; physical drive 0.2 goes backwards M569 P121.0 S1 D2 ; physical drive 121.0 goes backwards M584 X0.0 Y0.1 Z0.2:0.3:0.4 E121.0 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X200.00 Y200.00 Z3200.00 E700 ; set steps per mm M671 X0:290:290 Y155:62:255 S3 ; leadscrews at rear left, front middle and rear right M566 X600.00 Y600.00 Z150.00 E3000.00 ; set maximum instantaneous speed changes (mm/min) - increased Z and E M203 X20000.00 Y20000.00 Z2000.00 E6000.00 ; set maximum speeds (mm/min) - increased E M201 X3000.00 Y3000.00 Z200.00 E5000.00 ; set accelerations (mm/s^2) M906 X1600 Y1600 Z1000 E800 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X-3:305 Y-50:305 Z0.0:500.0 ; Endstops M574 X1 S1 P"121.io1.in" ; configure active-high endstop for low end on X via pin io0.in M574 Y2 S1 P"io6.in" ; configure active-high endstop for HIGH end on Y via pin io6.in M564 H1 ; allow jog without homing ; Z-Probe M950 S0 C"^121.io0.out" ; create servo pin 0 for BLTouch M558 P9 C"^121.io0.in" H3 F120 T10000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X0 Y66 Z1.8 ; set Z probe trigger value, offset and trigger height (Z2.30) M557 X5:305 Y20:290 P8 ; define mesh grid ; Heaters M308 S0 P"temp0" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin temp0 M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0 M307 H0 R0.291 C1127.4 D26.90 S1.00 ; Set PID for bed values M140 H0 ; map heated bed to heater 0 M143 H0 S100 ; set temperature limit for heater 0 to 100C M308 S1 P"121.temp0" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin 121.temp0 M950 H1 C"121.out0" T1 ; create nozzle heater output on 121.out0 and map it to sensor 1 M307 H1 B0 R3.089 C258.2:154.4 D5.95 S1.00 V23.7 ; Set PID for hotend values M143 H1 S280 ; set temperature limit for heater 1 to 280C ; Fans M950 F0 C"121.out2" Q80 ; create hotend fan 0 on pin toolboard out1 and set its frequency M106 P0 S0 H1 T45 C"Hotend Fan" ; set fan 0 value. Thermostatic control is turned on M950 F1 C"121.out1" Q250 ; create cooling fan 1 on pin toolboard out1 and set its frequency M106 P1 S0 H-1 B1 C"Part Cooling Fan" ; set fan 1 value. Thermostatic control is turned off ; Tools M563 P0 D0 H1 F1 ; 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 D0 H1 F1 ; 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 M564 H0 ; Let the Jog buttons work blv: added to allow jog buttons M575 P1 B57600 S1 ; Connection to PanelDue M955 P121.0 I10 ; Accelerometer ; Pressure advance M572 D0 S0.04 ; Miscellaneous M911 S21 R22 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
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does my height map look correct?
I've just installed a new bed on a core xy and have set the limits and bed probe area.
I can see the Y axis goes to minus 50, at which point eh nozzle is way off the edge of the bed, but is needed so the probe can reach as close the the front of the bed as possible (rear mounted bl touch).I'm just looking for some confirmation that I have it configured correctly, and that the -50 Y on the image is correct.
Also, what is a reasonable amount of deviation for a flat bad? thanks! -
RE: independent Z motors bed leveling not working anymore
Problem solved. Somehow M671 had been removed from config.g
M671 X0:290:290 Y155:62:255 S3 ; leadscrews at rear left, front middle and rear right
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independent Z motors bed leveling not working anymore
At some point my independent bed leveling seems to have stopped working. It has worked in the past so I know the hardware is wired correctly.
the image below is after running this;
M561 ; clear any bed transform G28 ; home G30 P0 X5 Y155 Z-99999 ; probe near a leadscrew G30 P1 X300 Y45 Z-99999 ; probe near a leadscrew ; G30 P2 X300 Y239 Z-99999 S3 ; probe near a leadscrew and calibrate 3 motors G29 ; probe the bed and enable compensation
; Configuration file for Duet WiFi (firmware version 3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.2.3 on Wed Jun 02 2021 18:38:31 GMT+0800 (中国标准时间) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"BLV mgn Cube" ; set printer name M669 K1 ; select CoreXY mode ; Network M552 S1 ; enable network M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet G4 S1 ;wait for expansion boards to start ; Drives M569 P0.0 S0 D2 ; X motor runs forwards M569 P0.1 S1 D2 ; Y motor runs forwards M569 P0.2 S1 D2 ; physical drive 0.2 goes backwards M569 P0.3 S1 D2 ; physical drive 0.2 goes backwards M569 P0.4 S1 D2 ; physical drive 0.2 goes backwards M569 P121.0 S1 D2 ; physical drive 121.0 goes backwards M584 X0.0 Y0.1 Z0.2:0.3:0.4 E121.0 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X200.00 Y200.00 Z3200.00 E700 ; set steps per mm M566 X600.00 Y600.00 Z150.00 E3000.00 ; set maximum instantaneous speed changes (mm/min) - increased Z and E M203 X20000.00 Y20000.00 Z2000.00 E6000.00 ; set maximum speeds (mm/min) - increased E M201 X3000.00 Y3000.00 Z200.00 E5000.00 ; set accelerations (mm/s^2) M906 X1600 Y1600 Z1000 E800 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X-3:305 Y0:305 Z0.0:500.0 ; Endstops M574 X1 S1 P"121.io1.in" ; configure active-high endstop for low end on X via pin io0.in M574 Y2 S1 P"io6.in" ; configure active-high endstop for HIGH end on Y via pin io6.in M564 H1 ; allow jog without homing ; Z-Probe M950 S0 C"^121.io0.out" ; create servo pin 0 for BLTouch M558 P9 C"^121.io0.in" H3 F120 T10000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X0 Y66 Z2 ; set Z probe trigger value, offset and trigger height (Z2.30) M557 X-10:293 Y65:300 P8 ; define mesh grid ; Heaters M308 S0 P"temp0" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin temp0 M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0 M307 H0 R0.291 C1127.4 D26.90 S1.00 ; Set PID for bed values M140 H0 ; map heated bed to heater 0 M143 H0 S100 ; set temperature limit for heater 0 to 100C M308 S1 P"121.temp0" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin 121.temp0 M950 H1 C"121.out0" T1 ; create nozzle heater output on 121.out0 and map it to sensor 1 M307 H1 B0 R3.089 C258.2:154.4 D5.95 S1.00 V23.7 ; Set PID for hotend values M143 H1 S280 ; set temperature limit for heater 1 to 280C ; Fans M950 F0 C"121.out2" Q80 ; create hotend fan 0 on pin toolboard out1 and set its frequency M106 P0 S0 H1 T45 C"Hotend Fan" ; set fan 0 value. Thermostatic control is turned on M950 F1 C"121.out1" Q250 ; create cooling fan 1 on pin toolboard out1 and set its frequency M106 P1 S0 H-1 B1 C"Part Cooling Fan" ; set fan 1 value. Thermostatic control is turned off ; Tools M563 P0 D0 H1 F1 ; 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 D0 H1 F1 ; 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 M564 H0 ; Let the Jog buttons work blv: added to allow jog buttons M575 P1 B57600 S1 ; Connection to PanelDue M955 P121.0 I10 ; Accelerometer ; Pressure advance M572 D0 S0.12 ; Miscellaneous M911 S21 R22 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
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RE: tuning LW-PLA
thanks @sebkritikel I hadn't considered there was no retraction on layer change. It makes sense now that I can't see any difference with the +0.5 after retract.
@Phaedrux
I think the main issue is resolved now. It was some sort of mechanical issue that has disappeared after I stripped and rebuilt the hot end. I no longer get the gaps at the start of a new layer.@sebkritikel thank you for providing the PA cylinder test. I've since re-tuned the flow, temp and retraction so used some after layer change code in prusaslicer,
; 0.2mm layer, 8 bands 5mm each, total height 40mm {if layer_num== 1}M572 D0 S0.4 {elsif layer_num== 25}M572 D0 S0.05 {elsif layer_num== 50}M572 D0 S0.06 {elsif layer_num== 75}M572 D0 S0.07 {elsif layer_num== 100}M572 D0 S0.08 {elsif layer_num== 125}M572 D0 S0.09 {elsif layer_num== 150}M572 D0 S0.10 {elsif layer_num== 175}M572 D0 S0.11 {endif}
towards the top looks best, so I then printed another 0.12 - 0.18 (ignore the bottom band I mistakenly left it at 0.4)
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RE: tuning LW-PLA
@o_lampe not a stupid question at all!
The grub screw felt tight as I couldnt rotate the heat block at all. But I stripped and reassembled anyway..Voilà, the same part as above (the white bits are just refections)
I'll continue with @sebkritikel's pressure advance tuning next.
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RE: tuning LW-PLA
Thanks again. I';ve made the changes you suggested.
I'm still seeing small gaps after de-retraction, It's not quite so obvious without a light source behind the image;
I did a test here; the top trint is with your latest suggestions. And the the descond print has 0.5mm extra length on deretraction. That's quite a lot, but visually I can barely tell any difference.
Another image even closer, seems to show the layer change looking ok. The gaps happen after the de-retraction and when it starts to print the new layer?
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RE: tuning LW-PLA
I also came across this that may help. This is my exact printer and extruder (although volcano), with settings for klipper.
https://www.blvprojects.com/post/klipper-ultra-fast-printing-9000acc-500mm-s
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RE: tuning LW-PLA
Thanks, Things are looking a little better...
I found a config.g for my printer here https://github.com/FYSETC/FYSETC-BLV-MGN-CUBE/blob/main/Firmware/config3.x/sys/config.g although I think that version uses a V6 clone.
After updating my config.g with those settings my print is looking a little better.
config.gThis is printed with the above config.
The first 10 layers are normal, after later 10 I sent M203 E6000 in the console while it was printing. Then after another 10 I sent M201 E3000, then after another 10 I sent M566 E3000.I can't really see any discernible change in the print.
this is the cylinder gcode. Shape-Cylinder (1).gcode