Flying extruder with 4th axis

[ander]

Hi there
Thanks for the help, i saw i had some errors so i changed them and the new axis seems to work fine even with lateral compensations, But i still have to fix one last thing so the printer can start printing, and this is the Z probe situation. I feel a bit confused with this thing in the firmware 3.0.
Being a delta printer has 3 axis ( X,Y,Z) and then it has an effector with a mecanical switch on it similar to the atom delta 3d printer.
The new axis(U) endstop is conected to E0 endstop pin, and the effector´s Z probe is conected to E1 endstop pin.
Here i put my config file and bed file.config(2).g bed.g

After finishing the entire configuration i will post the finished config file so others can use it
thanks

[dc42]

As you are running RRF3 I suggest you change your M558 command to this:

M558 P5 C"e1stop" H5 F1200 T6000 ; set Z probe type to effector and the dive height + speeds

Use either P5 (filtered) or P8 (unfiltered). The command as shown is for a normally-close switch. If your switch is normally open (not recommended) then use C"!e1stop" instead.

[ander]

Hi there
thanks for all the help, the printer looks that works fine, now time to create some macro´s etc.
For those who want to replicate this setup i will leave here my config file so you can copy.
It is currently running on a duet wifi and firmware 3.0
config (2).g

[ander]

Hello everyone
The 4th axis delta is running but i noticed an issue and i don´t know how to solve it.
To put everyone in context, we are running a delta printer on a duet wifi using firmware 3.0. the printer has an aditional axis for the flying extruder (see picture).
The issue is that the non printing moving speed is very low, i can increase the speed in simplify 3d up to 400mm/s (currently set at 200mm/s), and you notice no difference.
Even homing speed is very slow, and i noticed that if i push the endstop of the aditional tower by hand when homing, the rest of the motors speed up inmediately, so i looks like it is related to the aditional axis.
i will put the config file and homing file so you can please give me a hand.
Thanks config (3).ghomedelta.g

[dc42]

I don't see your config.g file.

I suggest you change your homedelta.g file as follows:

; homedelta.g
; called to home all towers on a delta printer
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu Feb 27 2020 08:16:33 GMT+0100 (hora estándar de Europa central)
G91   ; relative positioning
M584 P4                     
G1 H1 X833 Y833 Z833 U833 F5000 ; move all towers to the high end stopping at the endstops (first pass)
G1 H2 X-5 Y-5 Z-5 U-5 F4800    ; go down a few mm
G1 H1 X10 Y10 Z10 U10 F360     ; move all towers up once more (second pass)
M584 P3
G1 Z-5 F600               ; move down a few mm so that the nozzle can be centred
G90                        ; absolute positioning
G1 X0 Y0 F6000             ; move X+Y to the centre

Added M584 P3 line, and removed the U parameter from the following G1 command.

[ander]

I don´t know why but the config file was on the right of the picture i sent.
i just removed the U parameters in the home section, and the u axis doesn´t go back home anymore
config (3).g

[dc42]

@ander said in Flying extruder with 4th axis:

i just removed the U parameters in the home section, and the u axis doesn´t go back home anymore

That isn't what I suggested. Read my reply again.

[ander]

Sorry i missunderstood. i made the change you suggested and still makes non printing moves very slow

[dc42]

We do not advise running at x256 microstepping. Change to x16 with interpolation, adjust the M92 steps/mm accordingly, and try again.

[ander]

It worked very well!
Thanks for the excelent service!!