I have installed a Duet/Ethernet onto a Rostock Max V3 with an SE300 hotend and I'm trying to print a NASA Saturn V S-IC F-1 combustion chamber by faithfully printing the 356 lower tubes and 178 upper tubes using G2 circles over and over and over and over and over.

This part has 226,000 G2 commands in it.

I'm literally amazed that I can print a 1mm diameter circle using a 0.5mm diameter nozzle and it looks great.

I <almost> can't see the stepper motors turn as it's printing a circle.

And the extruder also seems to not be moving.

It's very impressive that the Duet can handle such teensy-tiny movements on a delta printer.

Thanks for all your work.

@educatingsavvas
I'm not an expert on the syntax of conditional code, but something like this might work: (Assuming the sensor you want to ignore is 5)

if sensors.endstops[iterations].triggered && iterations != 5

or, right after the while skip the check for iteration 5:

if iterations == 5
  continue

@MakeStuffMakeStuff said in NC Microswitch Z Probe with 3.2.2:

what does the pull up resistor do

You have a switch connected from ground to an input pin on the CPU.

The CPU reads the voltage at the pin.

• If it's above a certain level, it returns a binary one.
• If it's below a certain value, it returns a binary zero.

When your switch is closed, it's connecting the pin to ground, and when the CPU reads the voltage at the pin, it's pretty close to zero and it returns a binary zero.

When your switch is open, the pin is not connected to anything, and is just floating around. Sometimes, the CPU will read a low voltage and STILL return a binary zero.

The "pull-up" resistor is a high-value resistor that connects to a positive voltage, so when your switch is open, it "pulls-up" the pin to a higher voltage and the CPU reads it as a high-enough voltage to return a binary one.

When your switch is closed, the resistor still tries to "pull" the pin up to a higher voltage, but the resistor's value is too large to do that and your switch wins the fight and can drive the voltage at the pin close to zero.

I've been using G2 for a while now, and have started using it to do X,Y,Z moves and it works perfectly.

Most of the online GCODE previewers don't render this correctly, neither does Simplify3D.
This previewer does render them correctly.
https://nraynaud.github.io/webgcode/

So, thank you for allowing my SeemeCNC Rostock Max V3.2/Duet to perform the proper motions to allow me to make things. (That seam has gone away since I started doing X,Y and Z moves for each semicircle.)

This object had a diameter of 2 inches and there are 178 G2 semicircles in each layer.

spiralG2.gcode

@nikscha You can use something called Kapton tape and tape over those testpoints before you put your heatsinks on and they will be well insulated from any issues.

https://www.amazon.com/Mil-Kapton-Tape-Polyimide-Master/dp/B01LZRMJVR/ref=sr_1_1?dchild=1&keywords=1%2F4+inch+kapton+tape&qid=1618920866&s=industrial&sr=1-1

I don't know what version you are running, but this section will tell you how to disable a filament monitor for different versions.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M591_Configure_filament_sensing

V1.21 to current: Sn 0 = disable filament monitoring
Earlier than V1.2: Pnn Type of sensor, where: 0=none,

@mendelevium I have a Duet2/Ethernet controller in a delta printer, so I choose Delta and everything works.

Check that Tools->Firmware Configuration "Profile" is set to RepRap.

Great, I can look up that number and see it's a Triac.
That makes sense in this circuit.
It's a common way to "dim" AC loads.

I'll see if I can figure out a schematic from the images next.

ARGH!!!!!

Nevermind.

The damn filament end is stuck in the spool.

This darn MatterHackers filament has a giant hook on it so it doesn't let go of the spool and sometimes I forget to get in there with a knife and cut it off.

@Toastinator I have one drive up and running.

I can read and write the internal motor-controller parameters and (sometimes) they survive a power-cycle.

I am driving the motor from an Arduino so I can precisely control the step pulse count and timing.

I'm capturing data using a Saleae Logic 16 probe so I can see the step pulses and the encoder output as a measure of motor angle.

I'm using a 2000 Count-per-revolution encoder and looking at one phase so I get 500 pulses-per-revolution captured.

I'm seeing things that looks pretty good, but it might be good to get some feedback on what others think.

• I'm seeing about 70 step pulses at the beginning of a move before the motor shaft moves. (That's 2.x step at 0.9 degrees-per-step) It seems like this is acceptable for 3D printing.
• I see in the neighborhood of 16 encoder pulses at the end of a move after the step signals complete before the motor stops. This is about 12 degrees (13 steps) which seems like a LOT and I would think would cause printing problems.

I'll update so I can capture both encoder signals to see if the motor is oscillating around at the end of a move or if it's actually decelerating and continuing to move in the same direction.

As it stands, I'm not sure these will work for printer drivers (yet)

Setup:

Beginning of move:

End of move:

@xhota OK, let's get homing working next.

Post your config.g and homedelta.g here using the </> (Code) macro.

Here's mine:
config.g

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Tue Mar 09 2021 13:21:24 GMT-0500 (Eastern Standard Time)

; General preferences
G90                                                     ; send absolute coordinates...
M83                                                     ; ...but relative extruder moves
M550 P"alan"                                            ; set printer name
M665 R132.5 L291.06 B132.5 H400                         ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0                                           ; put your endstop adjustments here, or let auto calibration find them

; 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 P0 S1                                              ; physical drive 0 goes forwards
M569 P1 S1                                              ; physical drive 1 goes forwards
M569 P2 S1                                              ; physical drive 2 goes forwards
M569 P3 S1                                              ; physical drive 3 goes forwards

; Testing external driver
;M569 P5 S1 T4:4:4:4                                     ; physical drive 5 goes forwards
;M584 X0 Y1 Z2 E3 U5                                     ; set drive mapping
;M350 X16 Y16 Z16 E16 U16 I1                             ; configure microstepping with interpolation
;M92 X100.00 Y100.00 Z100.00 U100.00 E91.00              ; set steps per mm
;M566 X1200.00 Y1200.00 Z1200.00 U1200 E1200.00          ; set maximum instantaneous speed changes (mm/min)
;M203 X18000.00 Y18000.00 Z18000.00 U18000E1200.00       ; set maximum speeds (mm/min)
;M201 X1000.00 Y1000.00 Z1000.00 U1000E1000.00           ; set accelerations (mm/s^2)
;M906 X1000 Y1000 Z1000 E800 U1000I30                    ; set motor currents (mA) and motor idle factor in per cent

M584 X0 Y1 Z2 E3                                        ; set drive mapping
M350 X16 Y16 Z16 E16 I1                                 ; configure microstepping with interpolation
M92 X100.00 Y100.00 Z100.00 E91.00                      ; set steps per mm
M566 X1200.00 Y1200.00 Z1200.00 E1200.00                ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z18000.00 E1200.00             ; set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z1000.00 E1000.00                ; 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

; Axis Limits
M208 Z0 S1                                              ; set minimum Z

; Endstops
M574 X2 S1 P"xstop"                                     ; configure active-high endstop for high end on X via pin xstop
M574 Y2 S1 P"ystop"                                     ; configure active-high endstop for high end on Y via pin ystop
M574 Z2 S1 P"zstop"                                     ; configure active-high endstop for high end on Z via pin zstop

; Z-Probe
M558 P1 C"zprobe.in" H5 F60000 T6000                    ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y0 Z0.1                                     ; set Z probe trigger value, offset and trigger height
M557 R132 S20                                           ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4388 C7.06e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                                   ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B1 S1.00                                        ; 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"e0temp" Y"thermistor" T100000 B4385           ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                                    ; create nozzle heater output on e0heat 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

; Fans
M950 F0 C"fan0" Q500                                    ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                          ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                                    ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                                       ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                                        ; 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

; Custom settings
M501                                                    ; Load config-overrides.g
T0                                                      ; Select tool zero

; Miscellaneous
M575 P1 S1 B57600                                       ; enable support for PanelDue

homedelta.g

; homedelta.g
; called to home all towers on a delta printer
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Tue Mar 09 2021 13:21:24 GMT-0500 (Eastern Standard Time)
G91                        ; relative positioning
G1 H1 X505 Y505 Z505 F1800 ; move all towers to the high end stopping at the endstops (first pass)
G1 H2 X-5 Y-5 Z-5 F1800    ; go down a few mm
G1 H1 X10 Y10 Z10 F360     ; move all towers up once more (second pass)
G1 Z-5 F6000               ; move down a few mm so that the nozzle can be centred
G90                        ; absolute positioning
G1 X0 Y0 F300             ; move X+Y to the centre

We might have to start with some individual motor movelemts to make sure they are wired the same as my original Rostock Max V3.

@xhota I posted an answer in the Facebook page.

Use the config.json file I uploaded and hand it to the reprap configurator as "Use and existing configuration" and it will fill in all the values I used.

Click your way to the end and upload the resulting file to the Duet2 and it should have a good configuration.

@hebigt

You don't have any parameter identifier before the e0_heat name.

Maybe M950 H0 C"nil"

Reference: https://duet3d.dozuki.com/Wiki/Gcode#Section_M950_Create_heater_fan_spindle_or_GPIO_servo_pin

@schild0r Let us know how it goes.

@schild0r You can try adding an external pull-up resistor in addition to the built-in "weak" pullup resistor.

Something in the 1K to 4K Ohm range would be an aggressive pull-up and would help get you some resistance to noise from motors and other things.

@Peter-0 SeeMeCNC has been using Duet in their last set of printers.

They used to have smaller, less expensive printers, but they are concentrating on the larger ones now, so THIS one is the smallest and cheapest you can get right now.

It's US$1,600, but it's an extremely good printer.

I have a SeeMeCNC Rostock Max V3 that used a Rambo controller and I updated it to the version 3.2 that uses a DUet2-Ethernet board and I love it.

@tecno I don't know what version of firmware you are using, so this might not help.

Here's what my config.g says.
I have a part-cooling fan that Simplify3D turns on and off and I have an extruder cooling fan that turns on and off depending on the temperature of the hot-end sensor.

; Fans
M950 F0 C"fan0" Q500                                    ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                          ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                                    ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                                       ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                                        ; 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

@darryl123 OK, it sounds like you've got parts for two different printers and we need to figure out if you have ALL the parts for at least one printer.

I don't know if we should try to get a Trex-2 or a Trex-3 built.
It depends on what set of parts you have.

I think the next step is to try and figure out if you have all the parts.

I keep asking for photos and that is really helping me see what you have.

Can you send photos of each circuit board you have and the front of the display panel?

We might be able to figure out what goes where by following the Formbot assembly instructions once we know what you have.

Where in the world are you located?
I'm in Cambridge, Massachusetts.
We might be able to do a video-chat to see if we can figure things out also if you want to do that.

@darryl123 OK, I think it's a TRex 2+

Here are some images of the wiring to the main control box:
https://www.dropbox.com/s/xb1v1qa1oz4zd1p/User Manual of T-Rex 2%2B.zip?dl=0&file_subpath=%2F3D+Printing%2F2.+Connect+Wires.pdf

Does that look like what you've got?

This document shows two fans like you mentioned:
https://www.dropbox.com/s/xb1v1qa1oz4zd1p/User Manual of T-Rex 2%2B.zip?dl=0&file_subpath=%2F3D+Printing%2F1.+Assemble+Structure.pdf

I see two "DB" connectors for your two extruders, a big dual-pin "ribbon" cable going to your display and a green DC power connector.

Can you send more photos of the outside connections on the main large electrical box?

@maface said in Card Power for Wifi:

when I unplug laptop wifi resets to Duet wifi.

Can you describe this a little more?

Can you post your config.g and the results of M115