Replies: 77 comments 43 replies
-
|
Good question, you might wanna ask xpeng in the linked thread about that as his printer.cfg was the one we were using and adjusting to our needs. |
Beta Was this translation helpful? Give feedback.
-
|
Well it shows up as a toggle under misc in mainsail. But it does nothing and bed level seems to work regardless of the state. Where can I reach out to xpeng ? |
Beta Was this translation helpful? Give feedback.
-
|
The bl pin is in the display section of the official marlin firmware. I think its backlight enable pin because when you toggle it, the display will light up. I think I added that for debug usage and forgot to delete it. (btw I'm xpeng) |
Beta Was this translation helpful? Give feedback.
-
Ah good to know. I'll rename it backlight and comment it. |
Beta Was this translation helpful? Give feedback.
-
|
You're right, never really thought about that one actually! :) You find the link at my infopages (as mentioned in this repo as well) right in the first sentence of the "Installation" section of the "Klipper" chapter: https://1coderookie.github.io/KobraGoNeoInsights/firmware/fw_klipper/ |
Beta Was this translation helpful? Give feedback.
-
|
May I ask how you found this repo? |
Beta Was this translation helpful? Give feedback.
-
|
I was looking for printer.cfg's to compare mine too, I grabbed mine from reddit and already tuned it a bit more. |
Beta Was this translation helpful? Give feedback.
-
|
Ah so you came here from the reddit post actually? I see. |
Beta Was this translation helpful? Give feedback.
-
I have about 200h of printing with Marlin with the fan, I have not had issues yet. But yes, I checked with marlin and it's broken. I replaced it, did a benchy on marlin, turned out 'fine' (as fine as I can get on marlin). Went back to klipper, it won't work again, so I checked back on marlin and it was dead again. Maybe my fan config is wrong, but I did based it of xpeng's on reddit. |
Beta Was this translation helpful? Give feedback.
-
|
I also thought it might me the cfg, but referring to the marlin code the PB5 is correct. We also talked about this on reddit and xpeng(?) said it might be the PWM frequency, but he never had any problems and I set the power to 100% all the time so it might not be that as well. And as mentioned before, other users reported dead fans using stock-fw as well. So I asssume it's just bad quality actually, but maybe I'm wrong - if so, I hope someone will find the cause for this actually.. |
Beta Was this translation helpful? Give feedback.
-
|
I guess once the 3rd fan get here we'll know if it's something klipper related. I plan to do the following again:
If it died mid benchy on klipper like it did with the previous one, I'd say something would definitely be wrong |
Beta Was this translation helpful? Give feedback.
-
|
Sounds like a plan, keep me updated plz as well as maybe also write here about it (here's the talk about the fan problem): https://www.reddit.com/r/anycubic/comments/10cwm16/comment/jair234/?utm_source=reddit&utm_medium=web2x&context=3 |
Beta Was this translation helpful? Give feedback.
-
|
Yes, will update here when I've done the above, and on reddit. And yes, that's me. |
Beta Was this translation helpful? Give feedback.
-
|
In addition to some of the Anycubic replacement parts via 3djake I also just ordered a set of https://www.aliexpress.com/item/1005002065432445.html (24v ones) not sure which will be here faster. Not 100% sure they will fit, but if they do I might just switch to these as I can just run an extension cable to the hotend and have these swappable without undoing the cable harness. And it gives me more fans in case I kill the anycubic replacement part again when trying klipper. |
Beta Was this translation helpful? Give feedback.
-
|
Judging by the pictures of both they should fit imho, at least bot are 4510. Yeah, I need to place an order at 3DJ again as well to be on the safe side.. :( ;) |
Beta Was this translation helpful? Give feedback.
-
|
The fan from 3dj arrive (so the exact same one), it spins on both klipper and marlin (With default Given more users with a Neo showed up that had a sudden broken fan, I'm personally inclined to think it's a klipper thing that is not dialed in.
Not sure if I'll have time to redo the wire sleave as I just plugged it in and tested the fan with the display at 0, 25, 50, 100 and did the same thing via mainsail with the fan just on the shelve with the bottom of the printer open 😂 Will post an update if I manage to complete a benchy |
Beta Was this translation helpful? Give feedback.
-
|
Did you see my replies to you on reddit? |
Beta Was this translation helpful? Give feedback.
-
I got the exact same one that came with the printer on 3djake.be. https://www.3djake.be/nl-BE/anycubic-3d-printers-accessoires/material-fan-2 Make sure to pick the correct one, as the cable needs to be long. Edit: |
Beta Was this translation helpful? Give feedback.
-
|
And just to be 100% sure, |
Beta Was this translation helpful? Give feedback.
-
Been working for me, about 12h of prints on it now (mostly towers for calibration). Here is the printer.cfg I was using last night ##
## Anycubic Kobra Neo
##
[stepper_x]
step_pin: PA12
dir_pin: PA11
enable_pin: !PA15
microsteps: 16
rotation_distance: 40
position_endstop: -6
position_min: -6
position_max: 222
homing_speed: 60
endstop_pin: !PH2
homing_retract_dist: 0
[stepper_y]
step_pin: PA9
dir_pin: PA8
enable_pin: !PA15
microsteps: 16
rotation_distance: 40
position_endstop: -11
position_min: -11
position_max: 222
homing_speed: 60
endstop_pin: ^!PC13
homing_retract_dist: 0
[stepper_z]
step_pin: PC7
dir_pin: !PC6
enable_pin: !PA15
microsteps: 16
rotation_distance: 8
endstop_pin: ^PC14
position_min: -2
position_max: 250
position_endstop: 6.5
homing_speed: 5
second_homing_speed:1
homing_retract_dist: 2.3
[safe_z_home]
home_xy_position: 110, 110
speed: 65
z_hop: 5
z_hop_speed: 10
[extruder]
step_pin: PB15
dir_pin: !PB14
enable_pin: !PA15
microsteps: 16
full_steps_per_rotation: 200
rotation_distance: 7.60818
nozzle_diameter: 0.400
filament_diameter: 1.750
max_extrude_only_distance: 100
max_extrude_only_accel: 100
heater_pin: PB8
sensor_type: ATC Semitec 104GT-2
sensor_pin: PC3
min_temp: 5
min_extrude_temp: 5
max_temp: 270 # Stock is 250
control: pid
pid_Kp: 21.895
pid_Ki: 1.315
pid_Kd: 91.136
[firmware_retraction]
retract_length:1.3
retract_speed:35
unretract_extra_length:0
unretract_speed:30
[heater_bed]
heater_pin: PB9
sensor_type: EPCOS 100K B57560G104F
sensor_pin: PC1
min_temp: 0
max_temp: 130
control: pid
pid_Kp: 59.972
pid_Ki: 0.917
pid_Kd: 980.543
[bed_mesh]
speed: 120
horizontal_move_z: 5
mesh_min: 32, 32
mesh_max: 190, 190
algorithm: bicubic
probe_count: 8, 8
[probe]
pin: PA1
x_offset: 38.0
y_offset: 4.0
z_offset: 0.156
samples: 6
samples_result: average
samples_tolerance: 0.03
samples_tolerance_retries: 6
sample_retract_dist: 0.5
speed: 1
lift_speed: 4
activate_gcode: PROBE_RESET
[screws_tilt_adjust]
screw1: -6, 28
screw1_name: front left screw
screw2: 158, 28
screw2_name: front right screw
screw3: 158, 193
screw3_name: rear right screw
screw4: -6, 193
screw4_name: rear left screw
horizontal_move_z: 10
speed: 50
screw_thread: CCW-M4
[controller_fan controller_fan]
max_power: 0.75
pin: PB12
stepper: stepper_x,stepper_y,stepper_z
heater: heater_bed
[heater_fan extruder_fan]
pin: PB13
[fan]
pin: PB5
#cycle_time: 0.050 # slipeete 20hz
cycle_time: 0.0000318471 # jojos38 31.4kHz ???
[output_pin enable_pin]
#This is the pin controls bed, hotend, extruder fan, part fan.
pin: PB6
static_value: 1
[output_pin probe_reset_pin]
pin: PC0
value: 1
[gcode_macro PROBE_RESET]
gcode:
SET_PIN PIN=probe_reset_pin VALUE=0
G4 P300
SET_PIN PIN=probe_reset_pin VALUE=1
G4 P100
#[output_pin tft_rst]
#pin: PB4
[idle_timeout]
timeout: 600
[mcu]
serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0
restart_method: command
[printer]
kinematics: cartesian
max_velocity: 500
max_accel: 500
max_z_velocity: 25
max_z_accel: 100
max_z_accel: 20I'm experimenting with a few things, so you might just want to grab the Additional changes:
|
Beta Was this translation helpful? Give feedback.
-
Yeah, I had 3DJ mentioned as a good supplier in the Spare Parts chapter "Where To Get?", but I deleted it again actually as I might get in trouble adding links which could be seen as affiliate links by certain laws here, cuz I don't have (and don't want to add ;) ) an imprint (which I don't need if it's a pure personal and non-commercial site). So I'm actually torn between mentioning it or just leave it to the people to search for the mentioned part. There's a picture of the fan anyway, so ppl can see the exact name of the part.. |
Beta Was this translation helpful? Give feedback.
-
We're still investigating and testing that, so there's no guarantee that it's correct. |
Beta Was this translation helpful? Give feedback.
-
Seems interesting, I have to read the docs tho to see what the settings are for.
Did you already do the Input Shaper config? Btw: you do have "max_z_accel" configured two times up there, one time with 20 and one time with 100.
And does it do something actually?
I have the same, just not sure if CW or CCW to configure actually, as we are screwing/adjusting from the top. Seemed that CW gave more correct directions actually, but not all suggestions how to turn the screws were correct (same with CCW for me), so that was/is actually kinda irritating. But maybe I was just too tired that day and I didn't try again since then due to a good tramming result I finally did just w/o the instructions.. :( |
Beta Was this translation helpful? Give feedback.
-
|
OK so I'm dumb so posting this as an FYI for others, don't get a bed screw kits! (just get a set of spring tbh) I saw a cheap one and was like yeah they are M4 let me grab the kit, gonna make my life easier as I don't have to juggle the PEI plate when adjusting. But given the Y gantry is actually where the current screws screw into, meaning it's threaded, you can't actually use bed screws, when you loosen them you just screw them off 😂 |
Beta Was this translation helpful? Give feedback.
-
|
Yeah, screwing from underneath doesn't really work out.. Good thing in here tho is that (because the screws are held by the thread in the gantry already) you can add a simple couternut to prevent the screw turning loose due to the vibrations and the expanding and shrinking of the springs due to the heat.. |
Beta Was this translation helpful? Give feedback.
-
Not yet, some day.
Oops, indeed I should clean that up.
Not sure, as I understand it, it just 'resets the probe'. Not sure it does anything but I did have some weird incosistancy when I ran multiple bed mesh generations in a row. But have not done so with this change yet.
Took me a while, but CCW-M4 is the one if you screw from the top. CW-M4 is what happens when you screw from the bottom, but I don't have wheels (yet). |
Beta Was this translation helpful? Give feedback.
-
|
CCW: Well ok, gotta try that again then next time - as I said, somehow neither one gave me the actually correct instruction for all three screws, so that was kinda weird.. ;) |
Beta Was this translation helpful? Give feedback.
-
Then do yourself a favour and do by it using an ADXL345 - it's just sooo comfortable ;) |
Beta Was this translation helpful? Give feedback.
-
|
Note: converted this to a discussion as this is actually more a discussion about the probably best setting for the fanspeed than a specific issue in terms of 'something doesn't work' (in my understanding ;) ) and we can keep certain answers more together here by answering right underneath so that it's one thread (even tho we should try to not clutter this even more/too much with other topics than the fanspeed problem actually).. |
Beta Was this translation helpful? Give feedback.
-
|
Fan still works after 35h of printing, longest print was 5h30. So seems this cycle_time is working. |
Beta Was this translation helpful? Give feedback.
-
|
I have about ~120h of printing time, fan was still fine but since I swapped to a bi-metal heatbreak, V6 Heater block, ... I had to undo the wiring sleeve so I also swapped to the easier to get and way cheaper ali express fans I ordered, they seem to work on either the weird super high cycle_time or with the default cycle_time, they sound 'normal' with the default cycle_time and have a weird buzz with the super high one. Let' see how long this one lasts, I certainly feel better running the board at the default cycle_time though. |
Beta Was this translation helpful? Give feedback.
-
|
Yes, seems to be that certain fans prefer the lower frequency and others the higher frequency. Somehow I'd feel more comfortable with the default cycle_time as well, but at least also my stock fan is still up&running. My fingers are crossed that your new fan lasts long ;) |
Beta Was this translation helpful? Give feedback.
-
|
https://github.com/ANYCUBIC-3D/Kobra_Go/blob/e675180de25a622936be74ddf364f59715ec3943/source/board/bsp_pwm.cpp#L82 |
Beta Was this translation helpful? Give feedback.
-
|
Hmm, not really sure if I understood it correctly tho. So if the MCU is 200MHz like the specs say (or 168MHz as Klipper reports), would it be possible to run the fans at 20kHz then? What I forgot to ask the other day when you reported about the 20kHz: are all fans running at 20kHz with the stock firmware? Like the mainboard and heatsink cooling fans as well? I noticed this low-frequency flashing light coming from underneath the printer (from the LED of the mb) which seems to be caused by the low turning frequency of the mb-fan when using Klipper, but I don't remember how it was when using the stock fw. |
Beta Was this translation helpful? Give feedback.
-
|
The mb fan also uses the same frequency but its always set to run at full power see here https://github.com/ANYCUBIC-3D/Kobra_Go/blob/e675180de25a622936be74ddf364f59715ec3943/source/board/bsp_init.cpp#L145 |
Beta Was this translation helpful? Give feedback.
-
|
The extruder cooling fan seems like is using the marlin built-in control because I didn't find any custom config related to the hardware pwm |
Beta Was this translation helpful? Give feedback.
-
|
And what i mean not possible it because 100MHz/3MHz is 33.3333333333333333333 period. |
Beta Was this translation helpful? Give feedback.
-
Ah ok, got it, thx! Ok, so what's your recommendation for the fans we have (hotend, heatsink, mainboard) - all 20kHz right now? |
Beta Was this translation helpful? Give feedback.
-
|
Hi guys, this is a really long thread, and there is not tl;dr :D Just to add my experience: my part cooling fan died before switching to Klipper and I got it replaced, but I didn't change anything on Klipper to make it work. |
Beta Was this translation helpful? Give feedback.
-
|
Hey, |
Beta Was this translation helpful? Give feedback.
-
|
Hey, did try it via MainsnailIUI, tried 20khz, 31.4khz even 39.2khz mentioned Here, reflashed my neo with 168mhz (iinitialy 200mhz) settting in menuconfig. i could only find specs for 4010 on their alibaba page also found Coolcox BF4510H24S on Coolcox alibaba page Coolcox 4010 specs form comparasion
|
Beta Was this translation helpful? Give feedback.
-
|
WOW - they changed the fan?!? So yes, the pic at my page is from my Neo, so that's the fan being used there. I did get newer ones recently tho, so I'll inspect them and get back to you. If I don't have your type of fan in there - may I use it at my page then? |
Beta Was this translation helpful? Give feedback.
-
|
Of course, although before you put it there, lets do some further testing. |
Beta Was this translation helpful? Give feedback.
-
|
Ok, so I had a quick look at the latest printhead I got - tadaa, the same type as the one at your Neo. So they must have changed that recently, as I got this spare printhead just a short while ago as the sticker on that box it came in says "2023.06.21". At the latest Neo I got the serialID starts with "KN2302" which I assume indicates that it's been produced at February this year - and there the 'old' Coolcox has being used. The problem with those charts from above is (imho) that we can't really compare them as they're for the 4010 and only for the 12V as well. I reached out to Coolcox twice via email in the past btw, but they never replied.. Cuz if we look at the specs of that 4010 12V one which shows the 7500rpm, then it has an airflow of 2.20CFM - and compared to the 7.89CFM (and the 9000rpm) of the newer one, that seems to be too much of a difference imho. However, I'll take a pic and add that to page asap, just for having it shown already. |
Beta Was this translation helpful? Give feedback.
-
|
based on that, since my fan has different manufacturer i decided to "give it a go" and it looks like I've gained much more control, "cycle_time: 0.01" and on that i can start from 20% and scale it efficiently although i can still hear very clearly difference between 99% and 100% where 100 sounds like a jet and 99 beside still visually spinning very fast (I've put a piece of tape to see it more clearly) has little to no sound made by pushing air |
Beta Was this translation helpful? Give feedback.
-
|
Since i used @sclebo05 profile for cura, those are fan settings he had set: i never used PrusaSlicer, before i found out about my fan issue i've been in the middle of setting SuperSlicer. also used @sclebo05 profile and printed 20x20 cube which showed me something isn't right: As for the cube, z offset could be little to low:
|
Beta Was this translation helpful? Give feedback.
-
|
Oh sorry, my bad, I somehow got it the way that you're using PrusaSlicer.. In Cura it's the same with those maximum settings as it is in SuSli as well. There you already have 35% as default fan speed tho and 100% for bridging - so do you hear a difference when printing bridges? |
Beta Was this translation helpful? Give feedback.
-
|
Yes i did, fan was turning on only during bridging. i've taken printhead cover off and can confirm. fan is not spinning if its not 100% on stock fw. or klipper at 20khz, i'll now switch back to klipper and use 100hz cycle time and print mentioned cube again with same .gcode file |
Beta Was this translation helpful? Give feedback.
-
|
Ok, great, thanks a lot, then we obviously have proof now - AC effed up big time.. Oh my.. |
Beta Was this translation helpful? Give feedback.
-
|
Short update: as I have one spare part printehad which came with that new type of fan I also did a few tests with different frequencies using Klipper (I tested 7.7Hz, 100Hz, 10kHz, 20kHz, 37.25kHz, 40kHz). I can confirm @ProXinous ' findings and it really seems that that new type of fan just doesn't work with PWM.. 😱 |
Beta Was this translation helpful? Give feedback.
-
|
On the discussion of 200MHz for the MCU - it compiles fine, but Klipper still reports the MCU running at 168MHz, so it seems that the faster clock doesn't work on the Kobra Neo. In fact, it seems like when compiled for 200MHz, one of the fans (probably the mainboard one) fluctuates in speed a little bit, as it was audible for me. I recompiled for 168MHz and it seems that the fans are stable now. Need more time to really confirm this, but I guess it would be possible that the PWM generation would be affected when compiled for 200MHz, if the MCU still runs at 168. For future reference, as the menuconfig for Kobra Neo has changed a bit, I'm attaching a picture of the correct configuration, along with the (as of writing) latest version of Klipper (v0.11.0-267-g01ed8096) for the Kobra Neo.
Edit: Please note, that I've been running Klipper compiled for 200MHz for a good while now, and just now I recompiled for 168MHz, so I'll report back after some prints. |
Beta Was this translation helpful? Give feedback.
-
|
Thanks! Besides this weird behaviour you discovered, this doesn't seem to be the reason for the problem with that new part cooling fan tho, as PWM with that one doesn't even seem to work with the stock fw. I know your post wasn't about this, but just to make it clear for users who might come here and read it ;) |
Beta Was this translation helpful? Give feedback.
-
|
Yeah no problem with the posts on your site :) And of course the fan that Anycubic is shipping has nothing to do with the MCU frequency - it's just something I noticed myself. Had a quick look around the Marlin source code, haven't found anything concrete yet, but to my eyes it seems they used 168MHz there as well, so it's probably best to stick with that for Klipper too. |
Beta Was this translation helpful? Give feedback.
-
|
Great, thanks :) |
Beta Was this translation helpful? Give feedback.
-
|
Btw: can you create a new discussion "200MHz vs 168MHz clock speed" and copy&paste your initial post about that there, so that we can continue the discussion in an extra topic? That way this won't get cluttered with the fan stuff and it'll be easier to reference to the clockspeed discussion. If I'll do it, it won't be your post and as I somehow can't just create a new discussion from your post, it would be better if you'd just create a new discussion from it I think. TIA |
Beta Was this translation helpful? Give feedback.
Uh oh!
There was an error while loading. Please reload this page.
-
I noticed both configs have bl_pin block, but it's not clear what this does?
So, what does it do? Or is just just an artifact from copying the initial config from somewhere?
Beta Was this translation helpful? Give feedback.
All reactions