Mini5 to 1LC to smart effector wiring and control

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.