Mini5 to 1LC to smart effector wiring and control

opentoideas

so I modified the mount to give clearance but it didnt make a huge difference.

reduced the sensitivity to 25 and that seems to have done the trick. everything now working so I have another question relating specifically to a delta....

@jay_s_uk since the tower endstops are at the top how does homing the towers relate to probing the bed?

what I mean is that in gonfig.g I define the height of the print area and when the homing command is run all towers move to the top and Z is set to the height given in the config.g

does this overwrite the Z=0 that was determined by probe results?

my normal routine on powering on the printer would be home all, delta calibration followed by mesh levelling then a home all to put the carriage to the top but wont that negate the probed height?

I am thinking that rather than a home all at the end I should just use a move command to move the carriage up and centre it?

definitely heading into the over thinking it category now but I am new to deltas and some things are not intuitive.

jay_s_uk

@opentoideas once you run G32, a new overall height is calculated and can be seen in M665.
That can then be saved using M500 so it appears in config-override.g and reloaded at the end of your config using M501

opentoideas

@jay_s_uk ahh the missing link. Thank you so much. I thought I must be missing something.

Running a few cycles of levelling to check consistency and probing trigger point then I will get the first print going and see how it goes.

Thanks again for your patience and help

jay_s_uk

@opentoideas good luck!

dc42

@opentoideas said in Mini5 to 1LC to smart effector wiring and control:

what I mean is that in config.g I define the height of the print area and when the homing command is run all towers move to the top and Z is set to the height given in the config.g
does this overwrite the Z=0 that was determined by probe results?

Yes.

my normal routine on powering on the printer would be home all, delta calibration followed by mesh levelling then a home all to put the carriage to the top but wont that negate the probed height?

Yes. That's why I recommend that on a delta, after homing and before printing you run G32, and then don't home again. You can also run G29 after G32 if you want to.

opentoideas

@dc42 @jay_s_uk so I have added a M500 to the end of bed.g

my thinking is that now having homed and levelled the settings are now stored and a home all command will now accurately home based on the probed height?

just running a final mesh with everything hot to see if there is much variation from cold and soon printing again

jay_s_uk

@opentoideas heres my bed routine

; Auto calibration routine for large delta printer
M561                    ; clear any bed transform
M190 S60
M568 P0 S200
M116 P0
if heat.heaters[1].current > 175
; If the printer hasn't been homed, home it
   if !move.axes[0].homed || !move.axes[1].homed || !move.axes[2].homed
      G28
; Probe the bed and do auto calibration
   G1 X0 Y0 Z5
   G30
   G1 X0 Y80 Z10 F10000        ; go to just above the first probe point
   while true
      if iterations = 5
         abort "too many auto calibration attempts"
      G30 P0 X0.00 Y80.00 Z-99999
      if result != 0
         continue
      G30 P1 X51.42 Y61.28 Z-99999
      if result != 0
         continue
      G30 P2 X78.78 Y13.89 Z-99999
      if result != 0
         continue
      G30 P3 X69.28 Y-40.00 Z-99999
      if result != 0
         continue
      G30 P4 X27.36 Y-75.18 Z-99999
      if result != 0
         continue
      G30 P5 X-27.36 Y-75.18 Z-99999
      if result != 0
         continue
      G30 P6 X-69.28 Y-40.00 Z-99999
      if result != 0
         continue
      G30 P7 X-78.78 Y13.89 Z-99999
      if result != 0
         continue
      G30 P8 X-51.42 Y61.28 Z-99999
      if result != 0
         continue
      G30 P9 X0.00 Y40.00 Z-99999
      if result != 0
         continue
      G30 P10 X34.64 Y20.00 Z-99999
      if result != 0
         continue
      G30 P11 X34.64 Y-20.00 Z-99999
      if result != 0
         continue
      G30 P12 X0.00 Y-40.00 Z-99999
      if result != 0
         continue
      G30 P13 X-34.64 Y-20.00 Z-99999
      if result != 0
         continue
      G30 P14 X-34.64 Y20.00 Z-99999
      if result != 0
         continue
      G30 P15 X0 Y0 Z-99999 S6
      if result != 0
         continue
      if move.calibration.final.deviation <= 0.02
         break
      echo "Repeating calibration because deviation is too high (" ^ move.calibration.final.deviation ^ "mm)"
; end loop
   echo "Auto calibration successful, deviation", move.calibration.final.deviation ^ "mm"
   G1 X0 Y0 Z5 F10000                ; get the head out of the way
   G30
   G1 X0 Y0 Z25

i heat it up, run a G30, G32 and then G30 again.
Then the heightmap can be loaded and the print started

opentoideas

@jay_s_uk interesting. Gave it a go and had to increace the tollerance to 0.03 as my average was 0.025 to 0.032

spoke too soon..... now holding closer to 0.1

I suspect that this is telling me I need to improve the mechanical accuracy of the machine and unless the tramming of the legs has been bumped out I suspect that my printed adapter for the arms is the most likely culprit.

arm spacing looks bad so tomorrow will try to sort that out with shims as they are all under.

This will be solved soon once the linear rails arrive and I can swap to the magball mounts on the smart effector but its something to fettle while I wait

jay_s_uk

@opentoideas yea, 0.1 is pretty poor.
Magballs and the smart effector PCB carriages should solve some of that. Hopefully there's no other slop in the system

opentoideas

@jay_s_uk before the change I was pretty consistent at about 0.014

It seems likely the printed caraige adapter is the culpret so I will start with getting the arms parallel hopefully that removes a good chunk of the error

opentoideas

Well I was wrong. while the arm spacing was out they were within 0.5mm of each other but what I did discover was that one of my arms had a very sloppy ball joint.

it must have been one of the 2 spares that I had and got swapped in by mistake when I swapped things around.

changed it and back to a deviation of 0.014 on the first run

opentoideas

@dc42 I am having a problem with my fans when printing

; Fans
M950 F0 C"20.out1" Q500                               ; create fan0 on pin 20.out1 and set its frequency part cooling
M106 P0 S1 H-1                                        ; set fan0 value. Thermostatic control is turned off 
M950 F1 C"20.out2" Q500                               ; create fan 1 on pin 20.out2 and set its frequency hotend
M106 P1 S1 H1 T45                                     ; set fan1 value. Thermostatic control is turned on 
M950 F2 C"out5" Q500                                  ; create fan 2 on pin out5 and set its frequency Duet cooling
M106 P2 S1 H-1                                        ; set fan 2 value. Thermostatic control is turned off
M950 F3 C"out6" Q500                                  ; create fan 3 on pin out6 and set its frequency PSU cooling
M106 P3 S1 H2 T30                                     ; set fan 3 value. Thermostatic control is turned on

this is as per the documentation with part cooling on out1 and hotend on out2 on the 1lC

when I print the hotend fan gets shutdown which I believe relates to the slicer using the deprecated M107. I found a thread suggesting part cooling set to fan0 and hotend to fan1 and so I swapped them above but still get the same result with the hotend fan shutting off at start of print.

is this a quirk of the 1lC or have I made a daft error?

jay_s_uk

@opentoideas post your M563 from your config

opentoideas

@jay_s_uk doh, daft error it is!

for some reason the configuration tool has mapped F0:1

grr thanks again. fingers crossed

opentoideas

@jay_s_uk sorry to throw in another question, did you ever change out the Predator motors? linear rails and magball arms are almost here and I find myself wondering about the standard motors on the Predator.

since it will all be coming apart they would be easy to change but there is little to no information on the stock motors.

reading the Duet wiki there is lots of technical info about motor choice but without any info on the current steppers other than likely 1.8deg but then sellers like E3d provide little info on the motors they sell other than the likely replacement is 0.9deg

does it matter, are the stock steppers good enough or is it worth changing them?

I see in your blog you tried a 0.9 stepper but I got the impression that didn't work more as the motor wasn't a suitable rating rather than anything else.

jay_s_uk

@opentoideas I've changed the motors from the stock ones to 0.9 degree E3D ones. the high torque ones. High Torque Motor (1).pdf
ideally, deltas should have 0.9 degree motors are they benefit from the extra steps.
the motors I got previously were rubbish.

opentoideas

@jay_s_uk thanks, that was what I was thinking and at least I will then know the spec I am working with.