Posts made by JNB

@fcwilt Well, I would say for normal quality nozzles the tolerances are trivial, so it could be seen as the same for the particular manufacturer and nozzle type

@fcwilt exactly

The two marked lines

; Z-Probe
M950 S0 C"1.io4.out"                            	; create servo pin 0 for BLTouch
M558 P9 C"1.io4.in" H5 F500 T6000              	; set Z probe type to bltouch and the dive height + speeds
----> G31 P500 X0 Y-65.5 Z2.594                             ; set Z probe trigger value, offset and trigger height (Default with 0.1mm h8mm  nozzle = Z2.594)
M556 S50 X0 Y0 Z0                               ; set orthogonal axis compensation parameters
M557 X10:201.2 Y10:159.5 S20                        ; define mesh grid

[...]

; Tools
M563 P0 D0 H1 F2 S"Extruder 1"                               ; 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 D1 H2 X3 F4 S"Extruder 2"                               ; define tool 1
;G10 P1 U262.2 Y0 Z0                                 ; set tool 1 axis offsets
--->  G10 P1 U3 Y-2.8 Z0
G10 P1 R0 S0      

@fcwilt

I'm using a Tenlog Hands 2 which I modified with a Duet3 MB 6HC and a EB 3HC.

So it's a IDEX with two tools on one X-rail.

@fcwilt correct, and (as I just edited ) the tool-offset of the second extruder

Oh, sorry that was imprecise by me...

I'm using a BLTouch, so I have to readjust the offset of the sensor so the nozzel touches the bed when at Z0

An for the second extruder the Tool-offset

Hey,
I'm often printing with changing nozzle diameters and therefore different nozzle with different heights (measured from the end of the screw to the tip, aka the height of the external part of the nozzle).

So it would be very helpful to have a input field in the settings to set the actual nozzle height for the extruders without touching the config each time.

Would be cool if someone could implement this.

Greetings
JNB

Hey,
I just stumbled over a mistake in the tutorial for configuring a IDEX-Printer.

It states that the U-offset should be added / subtracted from the M208 U-Axis value.

"Subtract the U co-ordinates from the X co-ordinates and you have the rough offsets for U and Y. For the U value, increase or decrease the value of M208 Uxxx by the U offset, so that when the U axis is homed and then travels back to the spot it is above it for the same X co-ordinate as the X axis. For the Y co-ordinate add it to the G10 P1 Yx.x tool definition."

Source

By doing this you change the virtual length of the axis in relation to the actual length, which results in changing the relation between a virtual mm and a real mm (e.g. 1mm in reprap is 1.2mm in reality).

The correct way is to change the offset in the G10 of the corresponding tool.

For example: G10 P1 U3 Y-3 Z0 (resulting in bringing the tool 3mm more to the front on the Y-axis and 3mm to the right on the X-axis)

Would be nice if this could be corrected.

Greetings
JNB

As stated in this thread, the problem is solved after swapping the cables connected to the 3HC on the out0 / out1 headers.

Hey,

after taking measurements on the board for finding the problem regarded in my other thread I noticed that the connections of out0 to out2 are swapped.

Taking a multimeter and testing the connections of the header against Vin I have a connection from the pins marked "PWM_Vin" to Vin, and no connection to Vin on the Pins marked V_FUSED.

So if I didn't got the diagram wrong, there is a mistake, which can lead to wrong polarity on the connected parts.

My board is V1.0

It would be good if someone could also check this on his bord to verify the problem.

JNB

Hey,

I have a problem and didn't really understand where it derives from.
I'm setting up my Tenlog Hands 2 with a Duet 3 6HC and a 3HC.

The default hotend / extruder combination has a common trace for the hotend 24V supply and the fan's 24V power supply.

I connected the hotend to out0 on the 3HC and the fans to out7 & out8 on the 3HC with the jumper set to V_FUSED.

So looking on the wiring diagram they should also have common V_FUSED on the 3HC and the GND connection switched by a FET (PWM etc.)

But the Duet alsways resets if I enable the heater while the fans are plugged in.
If I don't plug in the fans everything works as expected....

Can someone tell me why this is happening and how to connect this board properly to the extruder?

Thanks
JNB

@jay_s_uk @droftarts

Updating totaly solved the problem... sometimes the easiest fixes are the best ones....

Thanks for your fast support!

JNB

@droftarts

Thanks for the quick help, I'll try this and give a feedback!

@jay_s_uk

Sorry, could have supplied it directly....

MB 6HC:

FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.2.2 ELECTRONICS: Duet 3 MB6HC v1.01 or later FIRMWARE_DATE: 2021-02-11

3HC:

Board EXP3HC firmware 3.1.0 (2020-05-15b1)

Hey guys,

I bought a Duet3 MB 6HC and a 3HC to rework my Tenlog Hands 2, which has pretty annoying Bugs in it's firmware and is very limited.

At the moment I'm planning all the connections and adapter-PCBs needed and found a little problem what I'm not getting over....

I connected the thermistor of one of my hotends with the temp0 port on the 3HC (so P"1.temp0"), but the controller still shows 2000C or n/v in the webinterface.

After searching a bit I tried connecting a 1k resistor, didn't changed anything at all, the thermistor has a resistance of approx. 107k at room temperature (around 25C or warmer today).

Does anyone has any idea where the problem comes from?

My config:

; Heaters
M308 S0 P"0.temp0" Y"thermistor" T100000 B4138    ; 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 B0 S1.00                                ; disable bang-bang mode for the bed 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"1.temp0" Y"thermistor" T100000 B4138  ; configure sensor 1 as thermistor on pin 1.temp0
M950 H1 C"1.out0" T1                            ; create nozzle heater output on 1.out0 and map it to sensor 1
M307 H1 B0 S1.00                                ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S280                                    ; set temperature limit for heater 1 to 280C
M308 S2 P"1.temp1" Y"thermistor" T100000 B4138  ; configure sensor 2 as thermistor on pin 1.temp1
M950 H2 C"1.out1" T2                            ; create nozzle heater output on 1.out1 and map it to sensor 2
M307 H2 B0 S1.00                                ; disable bang-bang mode for heater  and set PWM limit
M143 H2 S280                                    ; set temperature limit for heater 2 to 280C

I also tested the 1.temp1 port with same result... same thermistor on 0.temp0 (bed) gives me a reading of 20.2C, so I guess the thermistor is ok...

Thanks in advance.

JNB