Extruder feed just 0/1

CedricE

Hey together,

this ist my "second" post here, the first I didn't sent, because I got the answer while writing by myself 🤪

But today I can't solve a problem.

I'm using a Duet 2 Wifi on a kartesian printer to build a WAAM-machine. It will use a MIG/MAG welding torch to print near net shape models in metal.

The printer runs gcode from Cura now, and in next step, I want to give the welding machine a signal to start the torch.

Does anybody have an idea, how to do this?

In Cura I told it would be a usual stepper driven extruder and I tried to grab a signal from the expension breakout bord and also from the Duet 2 Wifi, but this are puls signals, right? How to get a normal off/on signal?

Or is this way a wrong one and is there an easier?

In best case, I'd get a 12V on/off signal but a 3.3V or 5V would be nice too

I hope you can help me!

Thank you very much and have a nice evening!

Cedric

Phaedrux

What are you actually trying to switch on and off? How is it connected?

Veti

maybe you are looking for CNC mode?

https://duet3d.dozuki.com/Wiki/Configuring_RepRapFirmware_for_a_CNC_machine

CedricE

@Phaedrux said in Extruder feed just 0/1:

What are you actually trying to switch on and off? How is it connected?

Hey,

I try to switch on and off the welding torch. This is usually a hand triggered machine with a microswitch. There is a 12V circle and if this is closed, the machine "fires". I plan to go with 12v-Duet-controlled into this circle to start and stop the welding torch.

dc42

I think https://duet3d.dozuki.com/Wiki/Gcode#Section_M571_Set_output_on_extrude should meet your needs.

CedricE

@Veti said in Extruder feed just 0/1:

maybe you are looking for CNC mode?

https://duet3d.dozuki.com/Wiki/Configuring_RepRapFirmware_for_a_CNC_machine

Maybe I'm looking for this, I don't know 🤪 but I'll check it, Thank you!

CedricE

@dc42 said in Extruder feed just 0/1:

I think https://duet3d.dozuki.com/Wiki/Gcode#Section_M571_Set_output_on_extrude should meet your needs.

I think that's it, thank you very much! I'll try it tomorrow!

Are there a few words you can say about

how to know which pin is which number? In pin out grafic I can't see this, right?
which pins I could use? When I take a look to pin out, I'd say there are only the pwm fan output usable? Or are there some more?

Thank you!

CedricE

I love this board for its perfect documentation!

https://duet3d.dozuki.com/Wiki/Using_servos_and_controlling_unused_IO_pins#Section_Logical_pin_numbers

CedricE

This post is deleted!

CedricE

Hey together,

that wasn't succesful today...

I don't get a clear signal out of the board, and I can't find a mistake... Maybe I don't see something or do something wrong?

I try to geht 0/1 out on pin 64...

Like this:

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.10 on Sat Dec 12 2020 14:09:27 GMT+0100 (Mitteleuropäische Normalzeit)

; General preferences
G90                            ; send absolute coordinates...
M83                            ; ...but relative extruder moves
M550 P"My Printer"             ; set printer name

M575 P1 B57600 S1 ;Set baud rate Duet Board.
M575 P0 B57600 S1 ;Set baud rate USB

; Network
M552 S1                        ; enable network
M586 P0 S1                     ; enable HTTP

; Drives
M569 P3 S1                     ; physical drive 3 goes forwards
M569 P5 S0                     ; physical drive 5 goes backwards
M569 P6 S0                     ; physical drive 6 goes backwards
M569 P7 S1                     ; physical drive 7 goes forwards
M569 P8 S0                     ; physical drive 8 goes backwards
M584 X5:6 Y8 Z7 E3               ; set drive mapping
M350 X1 Y1 Z16 I1            ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z160.00      ; set steps per mm
M566 X900.00 Y900.00 Z60.00    ; set maximum instantaneous speed changes (mm/min)
M203 X1000.00 Y2000.00 Z1000.00 ; set maximum speeds (mm/min)
M201 X200.00 Y200.00 Z20.00    ; set accelerations (mm/s^2)

M84 S30                        ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1               ; set axis minima
M208 X900 Y1200 Z300 S0         ; set axis maxima

; Endstops

M574 X1 Y1 Z1 S1                  ; set active high endstops

; Z-Probe
M558 P0 H5 F120 T6000          ; disable Z probe but set dive height, probe speed and travel speed
M557 X15:215 Y15:195 S20       ; define mesh grid

; Heaters
M140 H-1                       ; disable heated bed

; Fans

; Tools
M563 P0 D0 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 are not defined
M571 P64 S1

569 P3 S1                     ; physical drive 3 goes forwards

is only for checking, if the extruder rotates, if I can get a signal

; Custom settings are not defined

M571 P64 S1

is that the right way to use M571?

Im using this gcode

;FLAVOR:RepRap
;TIME:492
;Filament used: 2.23337m
;Layer height: 1
;MINX:313
;MINY:435.5
;MINZ:1
;MAXX:587
;MAXY:764.5
;MAXZ:2.564
;Generated with Cura_SteamEngine 4.6.2
T0
M82 ;absolute extrusion mode
G28 ;Home
G1 Z15.0 F6000 ;Move the torch high 15mm
M83 ;relative extrusion mode
G1 F1500 E-6.5


;LAYER_COUNT:2
;LAYER:0
M107
;MESH:500x600x5.stl
G0 F3000 X313.1 Y764.4 Z1
;TYPE:WALL-OUTER
G1 F1500 E6.5
G1 F900 X586.9 Y764.4 E115.145
G1 X586.9 Y435.6 E138.27492
G1 X313.1 Y435.6 E115.145
G1 X313.1 Y764.4 E138.27492
G0 F3000 X313.6 Y764.4
G0 X313.6 Y764.5
G0 X586.9 Y764.4
G0 X586.9 Y764.5
G1 F900 X313.1 Y764.5 E11.5145
G1 X313 Y764.5 E0.02356
G1 X313 Y764.4 E0.02356
G1 X313 Y435.6 E13.82749
G1 X313 Y435.5 E0.02356
G1 X313.1 Y435.5 E0.02356
G1 X586.9 Y435.5 E11.5145
G1 X587 Y435.5 E0.02356
G1 X587 Y435.6 E0.02356
G1 X587 Y764.4 E13.82749
G1 X587 Y764.5 E0.02356
G1 X586.9 Y764.5 E0.02356
G0 F3000 X586.4 Y764.5
;MESH:NONMESH
G0 F600 X586.4 Y764.5 Z2
G0 F3000 X586.4 Y764.4
G0 X313.07 Y764.43
G0 X313 Y764.5
;TIME_ELAPSED:189.624310
;LAYER:1
M106 S255
;TYPE:WALL-OUTER
;MESH:500x600x5.stl
G1 F900 X313 Y435.5 E138.35903
G1 X587 Y435.5 E115.2291
G1 X587 Y764.5 E138.35903
G1 X313 Y764.5 E115.2291
G0 F3000 X313.1 Y764.4
G1 F900 X586.9 Y764.4 E115.145
G1 X586.9 Y435.6 E138.27492
G1 X313.1 Y435.6 E115.145
G1 X313.1 Y764.4 E138.27492
G0 F3000 X313 Y764.5
G1 F900 X313 Y435.5 Z2.154 E138.35905
G1 X587 Y435.5 Z2.282 E115.22912
G1 X587 Y764.5 Z2.436 E138.35905
G1 X313 Y764.5 Z2.564 E115.22912
G1 X313 Y435.5 E96.85132
G1 X587 Y435.5 E57.61455
G1 X587 Y764.5
;TIME_ELAPSED:492.924824
G1 F1500 E-6.5
M82 ;absolute extrusion mode
M107
M84
M83 ;relative extrusion mode

Which voltage I would measure, if it would work? 3.3V right?

I tried using pin 20 before, like here https://forum.duet3d.com/topic/7822/m571-to-turn-on-fan-0-everytime-the-extruder-is-started/3 but I dont want to get a pwm signal. If i write

M106 P0 I-1
M571 P20  S1

I'd get a constant signal, right? But it doesn't work, too...

Or is writing M571 in config generally wrong?

Thank you and have a relaxed day!

PS: wanted to correct some words and now its spaaam

Phaedrux

Using pins gets a lot simpler with RRF3 and based on your config.g it looks like you're still using RRF2. Check your firmware version with M115.

If you still have access to DWC. Upload these 3 zip files, one at a time. Don't extract them. Reboot after each.
https://github.com/Duet3D/RepRapFirmware/releases/download/2.05.1/Duet2Firmware-2.05.1.zip
https://github.com/Duet3D/RepRapFirmware/releases/download/3.0/Duet2and3Firmware-3.0.zip
https://github.com/Duet3D/RepRapFirmware/releases/download/3.2/Duet2and3Firmware-3.2.zip
That will get your firmware and DWC up to date.
https://configtool.reprapfirmware.org/Start
For your config, might be a good idea to run through the configurator tool and generate a fresh set for RRF3.

You can learn about how pins are defined and named here:
https://duet3d.dozuki.com/Wiki/RepRapFirmware_3_overview#Section_Pin_names

CedricE

@Phaedrux

Thank you for showing me the way to make a safe update! I was a little bit scared to crash my system when i upload a wrong file from github
but it worked perfectly!

I have now firmware version 3 and I understood the "new" pin names, but I dont have succes to get a signal with M571...

; Custom settings are not defined
M950 P0 C"fan0"
M571 P"fan0" S1

this above doesn't work...

; Custom settings are not defined
M950 P0 C"connsd.encsw"
M571 P"connsd.encsw" S1

...doesn't work...

; Custom settings are not defined
M950 P0 C"connsd.encsw"
M571 P"0" S1

...doesn't work...

is it generally the right way to put M950 and M571 in the end of config.g?

Or should it be in the beginning of gcode?

I think I started print aboout 100 times now and I really don't now what to try now

Phaedrux

M571 P0 S1 without the quotes around the 0 should work I think

CedricE

@Phaedrux

Hey, not atm...

Only

M571 P"bedheat" S1

is working.

But no problem, I ordered optocoupler now for 24v and get other pins working I'll try another time.

Thank you very much for your help!

Phaedrux

Ah sorry, when I was looking at it bleary eyed this morning I mistook the command.

https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M571_Set_output_on_extrude