vcore 3.1 prints fine with prints that are up to 3 hours But with longer prints 5+ it layershifts

Title says everything. Printer is 3.1 300mm with rapido uhf hotend. Just default set up basically. and rat os 2.1 most updated version.
45 Replies
TheTik
TheTik2w ago
does it layershift once, or at that point is it all over the place?If you print something tall does it fail at the same height?
Demdor
DemdorOP2w ago
So when i print something tall so for instance around the max height it can be fine. but it just the longer prints that fuck up wait
Demdor
DemdorOP2w ago
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Demdor
DemdorOP2w ago
here is what i mean left fine right fucked
blacksmithforlife
have you calibrated your infill extrusion? I've seen people have that be over extruded which then causes a nozzle to drag and bump and cause a layer shift
TheTik
TheTik2w ago
oh! good call
Demdor
DemdorOP2w ago
I havent actually whats the best way to do that
blacksmithforlife
try doing a print with Z hop enabled. If it prints fine that would be a good indicator the nozzle is bumping something and to do more extrusion tuning
Demdor
DemdorOP2w ago
It seems i already have zhop enabled
Demdor
DemdorOP2w ago
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Demdor
DemdorOP2w ago
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blacksmithforlife
how tight are your belts? And do you have fans over your stepper drivers?
Demdor
DemdorOP2w ago
tension on touch doesnt feel to tight. I cant check the graph because the macro doesnt wanna work with beacon havent come to that yet and no i dont have fans but never needed them on my other bigger printer 500mm I can put a fan on it. i have a big be quite 12 v fan
blacksmithforlife
are you using "performance mode"? you need to get that fixed, people often over tighten them. Feel means nothing
Demdor
DemdorOP2w ago
Do you know how to get the beacon to work as the graph measurer I dont have anything else To check it 8:18 PM Invalid adxl345 id (got ff vs e5). 8:18 PM Invalid adxl345 id (got ff vs e5). This is generally indicative of connection problems (e.g. faulty wiring) or a faulty adxl345 chip. 8:18 PM Invalid adxl345 id (got ff vs e5). 8:18 PM Invalid adxl345 id (got ff vs e5). This is generally indicative of connection problems (e.g. faulty wiring) or a faulty adxl345 chip. 8:18 PM RatOS: All requested axes already homed, skipping.. 8:18 PM MEASURE_COREXY_BELT_TENSION i get this error
blacksmithforlife
are you specifying the beacon ADXL? I can't tell since you didn't provide the logs
Demdor
DemdorOP2w ago
which log do you want my printer.cfg
blacksmithforlife
please attach a debug zip (which you can download from the sidebar in the configurator) to your post.
Demdor
DemdorOP2w ago
oke moment
blacksmithforlife
looks like it is sometimes working, so I would blame wiring or connection for your ADXL issues also looks like you don't have performance mode enabled. It really is "normal mode" and non performance mode is "handicap" mode just meant for ensuring your motion system is working. Get some fans on your stepper drivers and enable performance mode
Demdor
DemdorOP2w ago
Ah oke How can i connect a 4 pin 12 v fan I mean if i connect only the 12v and the ground it will be constantly on but where do i put the pwm or tachmeter
Jeb Bush
Jeb Bush2w ago
Are you running an octopus?
Jeb Bush
Jeb Bush2w ago
Connecting a 4028 fan | RatOS
4028 server fans are becoming a popular option for part cooling because of their light weight and great pressure and flow rates. In this guide we'll go over how to connect one and use it for part cooling. 4-pin fans usually aren't used in 3d printers, and many boards only provide 2-pin ports, but fear not! There's always a way.
Demdor
DemdorOP2w ago
I am actually but i want to use this as the stepper cooler
Jeb Bush
Jeb Bush2w ago
I don’t think it offers any benefit for that application over a 2 wire fan
Demdor
DemdorOP2w ago
its the only one i have to be honest thats the reason
Jeb Bush
Jeb Bush2w ago
Ah Well that link above will get you what you need. I also wouldn’t bother wiring up the tacho
Demdor
DemdorOP2w ago
How do i do custom fan name
Demdor
DemdorOP2w ago
i plugged in this fan
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Demdor
DemdorOP2w ago
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Demdor
DemdorOP2w ago
and its working but its not spinning fast at all Maybe somebody can recommend me a stepper cooler fan [controller_fan stepper_cooler] # Stepper motor cooler fan pin: PD14 cycle_time: 0.0001 # Try reducing this value enable_pin: PB10 max_power: 1.0 shutdown_speed: 1.0 # Always keep the fan on at full power does this make sense ?
blacksmithforlife
Why are you doing this? Rat-OS already configures this for you by default
Demdor
DemdorOP2w ago
oh which pin do i need t oput it in
Demdor
DemdorOP2w ago
controller fan >?
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blacksmithforlife
BTW, Controller fans will only come on when the a stepper driver is active
Demdor
DemdorOP2w ago
so i have to plug it in the controller fan ? I got it nioce thanks for all the help ill put it in performance mode now and i will test it out OKe turning on performance mode gave me a otp warning
Jeb Bush
Jeb Bush2w ago
Over temp?
Demdor
DemdorOP2w ago
yeah But I just want no layer shift i dont really care that much for performance mode Just to go over all the things ive done. I greased my bearings v rails etc I checked belt tension its normal not tight at all. Rather loose but also not too loose Ive added an fan over the steppers i have turned performance mode on but off again because of the warnings im now going to check my z offset again and then print another longer print see what is going to await me tomoorrow morning but im expecting more wasted filament :*(
blacksmithforlife
They go hand in hand. You can't do normal accelerations without performance mode. As I said "performance mode" really is the normal current level
TheTik
TheTik2w ago
Non-performance is training wheels. Really shouldn't be getting overheating if a fan is vaguely pointed at the drivers. Do you have the correct driver's selected?
Demdor
DemdorOP2w ago
I left it all at stock i checked and steppers all btt tmc 2209 @TheTik @blacksmithforlife so ive messed up I unplugged the stepper while the power was still on. Probably frying that plug so motor 0 and 1 do not work . What ive done to diagnose the motor is i plugged the stepper and motor from 0 to motor 3 and 1 to motor 4. ive changed the config . and that all works the motors work now but when i move on the y both y and x move if i move on the x same im confused as hell
blacksmithforlife
The middle motor slots are tied together on the octopus I believe
Demdor
DemdorOP2w ago
only motor 2_1 and motor 2_2 I checked i only blew up motor 0 appearantly motor 1 still works the input and motor 3 and 4 arent being used so i would like to use one of them for my left rear motor
Demdor
DemdorOP2w ago
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