@norder Great! Thanks!
Best posts made by DuetUser
Latest posts made by DuetUser
RE: Two different motors used by E0
When 2 motors are connected this way is it possible to drive only one of them (to load filament)
One way would be to create a dummy tool :
M563 P1 D1
and driving it :
G1 E1500 F1000
but it is too much of a hack.
I know there is M302 P0 to allow cold extrusion, but is there a
way to force a certain piece of silicon on the board to feed pulses to connected motor?
RE: M567 Tool-Mixing issues/quirks
Great, happy to hear it!
What do you mean by "loop"? Is it a physical loop of filament? Where is it placed in the printer?
I've just connected the secondary extruder (42mm NEMA 17), set it to 300 mA, and mixed so it extrudes more than tha main extruder.
We'll see how far it goes
RE: M567 Tool-Mixing issues/quirks
Have you tried a weak motor as a secondary extruder, one that would miss steps on major resistance?
I have done no serious tests yet, we use 5kg spools and have similar problem. First idea was to use two motors connected to one stepper driver, not to occupy other drivers.
Main extruder use a 200 steps 25mm motor with belt transmission 2:1 and the secondary extruder at the spool is a 400 steps 42mm (I just had it handy) to match gear ratio. Unfortunately the main one is much weaker in this setup. Perhaps it would work with two same sized motors one 200 the other 400 steps.
Missing steps is plainly a dirty hack, but in our case providing enough support for the main extruder requires only a gentle push.
Mixing would definitely be a cleaner solution but is it at all possible to use two extruders inline without fighting each other at some point?
Two different motors used by E0
I'm going to add a secondary filament drive motor for at filament spool to offload main extruder. Extruder motor is 25mm 1.0A 200 steps one and the helper motor is 42mm 1.6A 400 steps one to provide the same gear ratio.
Is there a possibility to connect one motor to E0 driver, the second motor to E1 driver and drive both at the same time while extruding?
It's easy to do for Z axis with M584 X0 Y1 Z2:3 E4 or something, but M584 X0 Y1 Z2 E3:4 assigns different drivers to E0 and E1.
I'm currently on RRF 1.21 and Duet 2 Ethernet.
Connecting two motors to one driver ine series leaves the small one underpowered (it has 2x larger resistance)
Hot swapping extruder motor (Nema 17 1.6A)
Is there any remote possibility of swapping extruder motor without turning off the printer.
If the steppers are released and there would be a switch on motor cable cutting it off, would it be safe to disconnect it and reconnect?
I was doing it illegaly with Nema 8 a couple of times and nothing bad has happened, but could it be made a safe, repeatable operation?
RE: Stepper Motor Connector scroched/overheated
We use NEMA 24 motors for Y and Z axes with current set to 1.5 A and overheating pins are very common. Connectors are hot and often burn to dark brown colour around pins.
Yesterday one of the printers started to behave strangely and the problem appeared to be completely burned and detached wire, just before the crimp.
The crimps has to be high quality and strongly pushed to the pin, but to be honest many of the burnt ones I would never suspect are bad.
Just a moment ago Y axis missed some steps at the end of 30 some hour print
I think I'll just solder the motor directly to the pins instead of using connectors.
We are all on Duet ethernets, haven't tested Duet 3.
Anybody close to 4A currents on the motors with Duet 3?