[Tutorial] How to build Anycubic Marlin source code into a firmware.bin

My previous poll got many yes so here is the tutorial.

Requirements

A Windows computer
45 minutes of your time

Tutorial

First of all, download and install Keil v5.36, do not install v5.37 as it doesn't ship with ARM Compiler v5.36 -> https://armkeil.blob.core.windows.net/eval/MDK536.EXE
Install the software as you would install any software and open it
The Pack Installer will open and start installing default packages (the progress bar is at the bottom right) . In the future if you want to open the Pack Installer it is located under Project -> Manage -> Pack Installer...
Once the default packages are installed, in the Pack tab on the right, find and install ARM::CMSIS 5.7.0 (2020-04-09) and uninstall the 5.8.0 version

[Image]

Now, download and install HDSC.HC32F460 v1.0.7 -> https://1drv.ms/u/s!Ak69-GxOpF6Pg9gV3zWT5AIJPEan9g?e=ipQaD7
Once the installation is done, you can close the Pack Installer and open Keil µVision 5
Go to File -> License Management...
Click on Get LIC via Internet... and click OK
On the next page, enter this code in Product Serial # (PSN) -> 42B2L-JM9GY-LHN8C
Enter a PC Description, a First Name, a Last Name, an E-mail, your country and your phone (everything else should be optionnal). The E-mail will be used to send you your activation code so make sure to input a real E-mail!
Press Submit on the bottom and wait to receive the E-mail
In the E-mail you will get a License ID Code (LIC), copy that code and go back to Licence Management in µVision
Paste the LIC in the New License ID Code (LIC) input and press Add LIC

[Image]

Close the License Management tab and go to Project -> Open Project...
Open the anycubic.uvprojx file located in the workspace folder of the Anycubic source code (download it from Github)
You shouldn't have any error / message in the Build Output tab on the bottom, if it stays empty then it's good
To build, go to Project -> Build target
The output file will be located under workspace/firmware.bin

Enjoy

in anycubicby jojos38

97%

1.6y

8mo

YellowBreakfast

Cubehead

1.6y

Wow this is thorough. Great job!

EDIT: So good I decided to sticky it at least for now.

jojos38

1.6y

https://github.com/jojos38/anycubic-kobra-improved-firmware

I made my own firmware with some improvement here, this is still in beta so be careful with it, use at your own risk

[deleted]

1.6y

Oh yes please nuke that startup sound😂

jojos38

1.6y

I did it, now it's just a tiny bip haha

MutantXI

1.6y

This is just for the Kobra, not the Kobra Max, correct?

jojos38

1.6y

Yep only Kobra, but you should be able to port the changes to the Kobra Max firmware fairly easily

MutantXI

1.6y

Great! Thank you. And my first order of business will be disabling the startup sound.

jojos38

1.6y

If you don't want to bother I'm currently working making the startup sound much less annoying, you can take it to make your own Kobra Max firmware

Immediate-Ant7099

1.3y

What do I need to change in the firmware for Cobra Max?

jojos38

1.3y

You can check what I changed by comparing mine to the original Anycubic one and then copying the changes

Immediate-Ant7099

1.3y

Why did you switch to another board?
And on the new board did you use your firmware? What is this article talking about?

jojos38

1.3y

I didn't use my firmware as I changed nearly everything on my printer. I switched because the old one was stuck on and old version of Marlin and I like to experiment with stuff and use latest technologies.

darkamikaze

1.6y

I've looked at your changes and it looks pretty good. Have you tried booting it yet?

I'm tempted to try it but that linear advance thing spooks me since if it does wreck my extruder I don't have a spare lying around. I know I could just be reading too much into their changelog but just feel risky given it's my only printer and I can't afford the downtime.

Patapits

1.6y

For the record, I tried linear advance and all motors stopped working after some extruder wonkyness... I did not use /u/jojos38 fork though, so I may have messed my marlin configuration (reverting the firmware back to unmodified source code build made things go back to normal fortunately !).

jojos38

1.6y

Yeah I made some prints with it no issues but I didn't use linear advance. Don't be scared about it, even if it's enabled by default all the values are 0 and it doesn't do anything, you will need to configure linear advance yourself overwise it won't do anything

Patapits

1.6y

I enabled linear advance and tried the Marlin K-factor calibration procedure (https://marlinfw.org/tools/lin_advance/k-factor.html), and as soon as K factor is set to anything other than 0, my extruder stop working and the whole machine needs a reboot. So I guess there are other things to modify in the source code to make it work, but I'm surely not skilled enough to find out what !

jojos38

1.6y

Someone told me it's an issue with the drivers they use the motors, i will need to look into this

Bautasten1

1.6y

They use TMC2208 for extruder, try with SQUARE_WAVE_STEPPING or comment out STEALTHCHOP_E and set MINIMUM_STEPPER_PULSE 1

jojos38

1.6y

Thank you! Ima try that tomorrow

Due_Race_7945

1.6y

Seems like enabling spreadsycle on the extruder would fix the problem. But I found impossible to apply it only for E0 - the X-axis driver also goes to spreadsycle simultaneously with terrible screeching sound when active. Is there a way to solve it?

Due_Race_7945

1.6y

//#define STEALTHCHOP_E and enabling define HYBRID_THRESHOLD didn't help

Bautasten1

1.6y

I tried square, and stealtchop with stepper pulse 1. That didn't solve it either. I'm soon about to give up and solder on a 2209 to the board or look into the possibility to start a 2.1.x branch and only take as little as possible from this repo.

Continue thread...

chillchamp

1.6y

Awesome. Just flashed your firmware on my Kobra and it works! Bed leveling is super quick now and I love that you got rid of the startup sound. Thanks so much!!!

jojos38

1.6y

No problem, have fun! If you use Linear Advance be careful it can cause missed steps on your prints

GameBookstore

1.6y

not sure if you know or not, but when doing PID tuning with your firmware, it locks up the kobra after saving the changes and results in having to reflash to get it to boot. Just something you may want to look into is all. Also, I love your firmware, I hated that chime and the slow leveling

jojos38

1.6y

Hey, I haven't had this issue even tho I did pid auto tune that's weird. In all case I don't have the stock motherboard anymore I won't be able to attempt a fix sorry

GameBookstore

1.6y

can you recommend a better board? I'm starting to think mine has issues.

jojos38

1.6y

I almost got the SKR 3 EZ working, haven't tested it yet tho

Bautasten1

1.6y

Reply

I have that board too and is going to put it in my Kobra Max (hopefully tomorrow). I believe I have all of the info regarding the flat cables pinout, is there anything else that should be prepared?

jojos38

1.6y

I don't think so, if you cable everything properly it should be fine

Jo-Kim

1.3y

After messing about with the Kobra firmware I am also considering switching to a different board. Is it really as simple as connecting it up correctly? What about the lcd? Does that keep running as is, or does its firmware need changing too? Does the SKR 3 EZ fit in the old board’s space? Sorry about all the questions, not a lot of info is out there other than people have done it 🙂

jojos38

1.3y

Hey, nope it's not easy although it's definitely doable, you need a crimping tool and a new probe circuit or a BL touch

The LCD won't be working but you could probably make it work with a new firmware. I was too lazy to make one

Nope it doesn't fit the old board space, I mean it does but the screws does not align so it would need a way to fit it. I just put mine below the printer and it hangs there

Jo-Kim

1.3y

Hmm, I’m not sure yet if I want to do that… Maybe I’ll fiddle with the firmware a bit more, that said, when compiling it gives the message that Microlib is enabled, but it doesn’t support c++. It compiles just fine regardless, but does it matter if I disable it to stop the warning?

jojos38

1.3y

Don't worry about the warning as long as it works

Jo-Kim

1.3y

But does it matter if I disable Microlib? Do you know if there is a reason it needs to be enabled?

Continue thread...

AdAble5924

1.2y

Hi, I tried to compile the code and saw below error.

linking...
.\obj\firmware.axf: error: L6050U: The code size of this image (181276 bytes) exceeds the maximum allowed for this version of the linker.
Finished: 0 information, 0 warning, 0 error and 1 fatal error messages.
".\obj\firmware.axf" - 1 Error(s), 130 Warning(s).
Target not created.
Build Time Elapsed: 00:11:46

The code size is exceeding the memory. Can you please help here?

jojos38

1.2y

Hey I'm sorry I have no clue what could be wrong here, you may want to read carefully everything and make sure you didn't miss a step maybe

Jo-Kim

1.2y

Try disabling some features in configuration.h to bring the size down…

thequietguy_

5mo

Sorry for the super late reply here, I know you have probably moved on.

In case anyone else runs into this: You need to uninstall the Keil plugins in VS Code and deactivate the "User-Based license" in uVision. After that you need to register with the community license.

https://developer.arm.com/documentation/ka005577/latest

kermit_the_frog_here

1.3y

Thank you very much for this guide. I am working on going through it. I put a second belt driven Z axis screw and a Titan Aero on my Kobra so I need to adjust some firmware settings for Z axis limits and temperature.

For anyone who is paranoid like me and likes to download from official sources:

You can go on keil.com and download MDK-ARM current version, the URL it gives you ends with MDKxxx.exe, at least as of now you can easily download the version mentioned in this post with MDK536.EXE. I checked and the SHA256 of both the one in OP's post and that one match (f2398d43cd162b02f8a1d54553199426b64b53dff5b8b499b566b8db4459cc51)
The HDSC.HC32F460 v1.0.7 is available from the chip manufacturer. If you go to http://www.xhsc.com.cn/Productlist/info.aspx?itemid=1853&parent and download HC32F460_IDE_Rev1.0.7.zip, inside is the same .pack file that OP provided. SHA256 for both match (2aeec808bbce76c4f9465c29f55d5304d70b8911a0da7c212b76b4eb2592db9f)
The PSN provided is a legitimate and kosher PSN provided by an ARM employee on their public forums for MDK Community Edition. See https://community.arm.com/support-forums/f/keil-forum/53462/unable-to-unlock-the-mdk-community/179867#179867

In other words, everything checks out :)

Only note so far to those less experienced with Keil MDK is you have to wait a little bit the first time the pack manager opens for it to download a bunch of stuff before you can mark anything for install/removal.

kermit_the_frog_here

1.3y

I was able to successfully update my firmware to change the settings I needed. My repo which includes a README with some of the stuff I have learned in the process is here: https://github.com/shilrobot/Anycubic-Kobra-Firmware

jojos38

1.3y

No problem! Enjoy your printer

ppastur

1.6y

Thank you this is great!

Patapits

1.6y

Thanks ! Just installed it on my Kobra, seems to be working so far :)

[deleted]

1.6y

Thank you for taking the time to do this, as a new to marlin guy, I would have stumbled around for days trying to figure this out.

Unfortunately I already jumped off the bridge and bought a btt skr3 motherboard, so I’m off on a different learning curve.

Saving this in case I buy a new Anycubic and want to be able to fix the program. Was really tempted when I saw their largest version on for $525 instead of $750 during the prime sale. Alas, other priorities this year.

jaimesot

1.6y

Thank you for this! Will compile your fork & play with the cooling fan PWM settings. Added a 5015 and can't make it work under 90%.

jojos38

1.6y

No problem, good luck!

Gyroshark

1.4y

Hey did you make any progress on this? I also have bought a 5015, these ones specifically. I've wired it up but it only works at 100%, barely functioning below 98%. I've compiled firmware with FAN_SOFT_PWM and SOFT_PWM_DITHER enabled. Going to attempt to flash this and see if it helps. If not I'll switch it to the FAST_PWM_FAN and see if that helps.

I think I may be switching to another board though if this proves to be too problematic.

No-Distribution-1734

1.2y

Hi did you make any progress with FAST_PWM_FAN enabled? As soon as I enable it I get a compiler error regarding the temperatures or something...

Gyroshark

1.2y

I did get it working by setting soft PWM to 3 or 4, I forget which. I ended up buying a new motherboard and installed Klipper instead of messing with marlin more. Recompiling got too annoying to deal with.

I never got a temp error in marlin, not sure what that’d be from unless you changed the pin out somehow.

KobraC0mmander

4mo

Was that the only setting you changed? I bought those exact fans too and couldn't get them to work. I got them working in Klipper with a cycle time of 1khz but couldnt keep klipper from imploding so I gave up.

Hoping this is my solution.

Gyerfry

8mo

Seems to be a bug with Marlin that was fixed in later versions.

KobraC0mmander

4mo

I think you have to set a value after that. If it's a frequency, it would be in hz

jojos38

1.6y

Sorry to those who couldn't see my previous post, it wasn't working for some reasons

SpacemanTomX

1.6y

I don't know anything about this but I can follow steps and improvise pretty aight.

That being said. Do you think this would work on a MegaX?

jojos38

1.6y

These step should work on any Anycubic Marlin source code that uses uVision

darkamikaze

1.6y

Is there a clever way to figure out when/which version of Marlin 2.0.x-bugfix they're using? I know it spits out a build compiled in 20211222 but I can't seem to find anything around that date in the Marlin repo. It's all commits from Dec 18 and then Dec 24. Or is that 20211222 just the date Anycubic compiled Marlin? Is figuring this out not possible without knowing when Anycubic pulled Marlin source?

I guess my goal is to figure out which version of the Marlin source they used so I can compare the default Marlin source against changes Anycubic might have made against it? Is this the best way to approach upgrading Marlin version? I figure we can't just nuke the contents of the Marlin directory and update the Configuration.h Configuration_adv.h appropriately right?

jojos38

1.6y

I'm pretty they have a mix of older Marlin and more recent Marlin. To answer your question their latest files are from 2.0.8

The date is from when they compiled it

They made a lot of changes, it's doable to update to Marlin 2.1.1 but that's not gonna be an easy task.

I ended up totalling the board while attempting a solder to make Klipper work so I just bought another one, an SKR 3, I will try to get rid of every proprietary stuff Anycubic has been using so that I end up with a completely open source printer.

onkelbebu

1.6y

That's interesting. Why did you want to solder something? I have, with the help of Stevegotthardt fork, Klipper running. The problems remaining are problems talking to the TMC drivers. I investigated with marlin and the TMC dump gcode and it seems that some registers on x are not readable even there

jojos38

1.6y

X and E use the same uart address, it won't work without Klipper modification or without changing the routing on the motherboard so that X address becomes 3 instead of 0, hence my soldering attempt

onkelbebu

1.6y

That explains a bit. Though in the source code e has 3 ? I never checked in the actual hardware

jojos38

1.6y

Yeah it has 3 but if you use 3 with TMC2209 in Klipper it won't work, if you use 0 however the motor will move (even if Klipper shut down the printer right after)

onkelbebu

1.6y

I had similar findings. But if l left e without TMC entry extruding was working. Though there seems to be more around. I got y moving and probing correctly. So y and e kinda worked. I'll try measuring the pins tomorrow. I wonderered why marlin works though.

jojos38

1.6y

I don't know why Marlin works either and why addresses are different

darkamikaze

1.6y

Ah X-x, thanks for the quick reply. Yeah I'm not even sure if it's worht updating to newer versions of Marlin either. It's a battle of

if it ain't broke don't fix it

and

I'm curious af how much we can customize our 3d printer

jojos38

1.6y

The first question is more, if it's broken can you afford (time / money) to make it work again

And you can customize them indefinitely, that's what I love with 3d printer, but when you have brands like Anycubic trying to make proprietary stuff everywhere, well it makes things much harder and less funny unfortunately, sometimes not worth.

unrzn0

1.6y

Uh sh**! hope you can resurrect it and continue working on your great improved firmware. Thanks for all the work!

jojos38

1.6y

I probably won't unfortunately, I will edit the Github page if I stop or not

Jo-Kim

1.3y

In case you're still interested in figuring out what changes they made, this version is the closest to Anycubic's version I've been able to find: https://github.com/MarlinFirmware/Marlin/tree/43a91e5963c7563c4db3fcde4f4862ea0f9670ee

Jo-Kim

1.2y

Did you ever get anywhere with this? I’ve been working on doing the same thing and am almost fully up-to-date, but there’s some area’s that are just beyond my abilities and it could do with some extra eyes… https://github.com/JoyceKimberly/Kobra-updated

Training-Rate-9150

1.5y

Very nice tuturial. Just missed to mention that the keil needs to run as administrator during licensing and during adding packages.

I consider porting it to linux cross compiler but i am not sure if this is possible.

what type of cpu is it . is it arm ?

jojos38

1.5y

Hey I have no clue about the type of CPU sorry but it uses CMSIS if it may help

Training-Rate-9150

1.5y

Thank you for your feedback!

Another important question is:

Is there any chance, that I destroy the bootloader by compiling the sourcecode using

keil and inputting the bin file to the printer with sd card ?

The Bootloader is the ability to load new image file again and again.

if the bootloader is missed or overwritten, then this functionality is not there anymore and nobody instructs the cpu to watch out for a new firmwar image.

jojos38

1.5y

If you mean can I brick the printer by flashing my custom build firmware using Keil (only the firmware.bin) the answer is likely not, I already flashed broken Marlin etc no Issue. It just doesn't boot. I don't know how you can flash the bios /bootloader of the motherboard itself, or even if it is possible

I am not 100% certain though so stay careful

Adventurous-Key7635

1.4y

you just need an eprom writer... I use then to flash PC and GPU bioses

Training-Rate-9150

1.5y

Jojos38, i am very happy with your firmware.

I have created this!

https://cults3d.com/en/3d-model/gadget/anycubic-kobra-sd-card-adapter-regular-size

I am happy to provide to you for free when you are interested.

jojos38

1.5y

Hey! Thank you so much, I'm happy that you like my firmware

I may have a use of this in the future as I changed the motherboard of my printer and hence the SD slot does not align anymore

Thank you for providing it for free to me!

Training-Rate-9150

1.5y

I am just curious now. What did you change with your printer ?

jojos38

1.5y

I changed the motherboard for an SKR 3 EZ with TMC 2209 and I am waiting for a new extruder, a Biqu H2 V2 Smart

kagoromo

1.5y

Thank you for this guide! Now I can add Linear Advance to my Kobra Go.

jojos38

1.5y

No problem

kagoromo

1.5y

Looks like I cheered too early :( Linear Advance seemed to have been enabled, but whenever I try a K-value > 0, the extruder motor just stops. Perhaps it's the same bug here: https://github.com/MarlinFirmware/Marlin/issues/16076

Do you know how to update the Marlin within the uvision project?

Edit: The top comment thread discussed this very problem. No easy way to solve this. I might have to look into getting a new mainboard, darn it.

Gyroshark

1.4y

Finally, I found a relevant thread! I was also looking into making custom firmware for my Go, but after reading this (fantastic guide ty OP), and finding that the motherboard has little to no documentation. I think I'm gonna go the same route and upgrade my mainboard as well. What board were you thinking of upgrading to? I think I'm going to try and make a build-log or something if I go thru with this.

kagoromo

1.4y

I'm considering this Pi substitute board (video by Teaching Tech): https://youtu.be/vZIOZTce7NI. That'd probably work well, but it's another 75 USD so I'm not convinced yet.

Another route which doesn't require new hardwares for me is to wait for someone to make a printer.cfg, then install Klipper on a VM then run it from there. I'm leaning on this route because I'm cheap :p

Gyroshark

1.4y

That’s really interesting I haven’t really delved into klipper myself but I will now! Ill see how difficult it is to make a config file for klipper and try to make some headway there. If this proves to be too annoying I’m probably just going to swap to the SKR 3 with 2209 drivers and just get a new screen and such.

Hopefully the config file option is doable lol

SYNYST3R1

1.4y

I forgot to tag you when I was talking about Klipper further in the thread. Have you made any headway with the config? I've got to the point of the steppers moving and the y and z endstops working, but all of the other pins seem to not work that are in the source code. I don't really have much of an idea what I'm doing lol so I'm trying to find any help I can get since no one else seems to be working on much for the Kobra Go

Gyroshark

1.4y

Unfortunately I havent looked into it at all. I decided to pick up a BTT SKR 3. Did this to have swappable drivers and to get something that is a bit more tinker-friendly. Also I believe the 2208 drivers that the Go has have issues with linear advance so I chose 2209's for the new board. Gonna swap this out soon-ish here and see how well I can get the inductive probe to work.

SYNYST3R1

1.4y

Yeah I realized how bad the 2208 drivers are today and instead of spending the money for a new board and drivers and all that I think I'm going to just return the Go at this point. I want more options for tinkering like you said and it seems like Anycubic is either against it or don't know what they are doing so you have to remove resistors and bridge pins just for them to work in Klipper. I'm thinking about just getting an Ender 3 S1 they have it on sale at Microcenter near me for only a little more than I spent on the Go. The Go also has a huge lack of support and community so it's really hard to get people together to work on something like Klipper or to even find parts that fit.

Gyroshark

1.4y

Thankfully I got the SKR open box for ~$50 at my local microcenter which was lucky. Yeah, at its base price I think the E3 is probably better, just for the community alone.

Hopefully AC figure their community relations out a bit more. They've been a bit weird about their approach. As a quick example, I asked about 3D files for the printer to help model new shrouds, something that creality has completely open on their own github. Their support replied with the following,

"Yes, we do not have 3D models."

So uh... yeah I guess they dont want to upload those which sucks. This attitude combined with the fact that it took months to even upload their firmware gives me a bad vibe. I'm pretty satisfied with my printer after the mods, but even then I got the thing for $100, if it was more than that I wouldnt have bought it, I probably would have gone with an Ender 3. Best of luck friend!

kagoromo

1.4y

Sorry I missed your message. Yeah, please drop me a note later if you find something workable!

My earlier research took me to this thread on the Klipper group: https://klipper.discourse.group/t/support-for-hdsc-chips-hc32f460/2860

and this reddit thread, probably made by that same guy on the Klipper group who advised the soldering stuff: https://www.reddit.com/r/anycubic/comments/wqxquu/a_path_to_klipper_on_the_kobra_kobra_max/

You probably noticed that those are for the Kobra and Kobra Max, not Go though.

For now I have got my printer dialed in and attemping some pretty long prints (10+ hrs). If those come out well enough, I will just leave the printer at that and try to stop thinking about tinkering for about half a year, lol.

SYNYST3R1

1.4y

I think Marlin is a dead-end on this printer. I think maybe Klipper is going to be the better option. They have the pins in the source code. Do you know if we made the printer.cfg if we need to bridge resistors or anything like on the regular Kobra? I'm not sure how much work has gone into Klipper on the Go. It doesn't seem like much work has gone into anything for it.

I'm gonna see if I can get the printer.cfg together today and do some testing of my own.

kagoromo

1.4y

Yeah I agree, I have stopped trying to modify Marlin and instead made do with printing slower (50mm/s) and at higher jerk (15mm/s2). Quality is quite decent with that.

To be honest I'm new to Klipper anything so all the pin bridging, printer.cfg talks just went over my head. Sorry I can't help with any of that, but I hope you can achieve a breakthrough!

SYNYST3R1

1.4y

So I did some tests and got the printer.cfg started, but for now Klipper does not work. It has resistors on both R65 and R66 and I'm not sure if the solution is the same, but I have the same error of it not being able to read stepper x. I am in the klipper discourse thread so hopefully someone can help it run on the Go. If I get anything figured out I will make sure to let you know

Continue thread...

Adventurous-Key7635

1.4y

I did the mod on my kobra standard. Nothing but issues honestly. Ended up unmodding the board and using jojo's non linear FW

kagoromo

1.4y

Yeah I totally get that. See, here's a cube after I have finished calibrating the printer. No linear advance, no input shaping, just slow and steady.

https://photos.app.goo.gl/gUgv3TQwngw45vQi9

60mm/s internal wall, 20mm/s external wall, 15mm/s2 jerk. Decently sharp corners for a 0.6mm nozzle, no bulging or ringing. Top infill could do with a bit lower flow but otherwise, it's as good as it gets.

I'm not averse to tinkering and modding, but the effort required to mod this printer is just not worth it for me. I would rather just print stuff lol.

kagoromo

1.4y

Linear advance not working is quite unfortunate, since I only really need that for good quality prints (reduce corner bulge). I don't need Klipper input shaping since I'm fine with printing slower. It's such a shame since the Kobra Go is a great value otherwise.

jojos38

1.5y

It's near impossible to update Marlin in the uVision so yeah, no easy way as you said

Sclebo05

1.4y

Helped me greatly with my Kobra Neo. Thanks!

jojos38

1.4y

No problem!

[deleted]

1.3y

Neo

Did you have to change the LCD display type? Looks like the Neo and Go use the same screen.

Sclebo05

1.3y

I did not change LCD type for the Kobra Neo.

[deleted]

1.3y

I just get a black screen with the jojos firmware as is, wasn't sure if I needed to make changes in the firmware. I've got the Kobra Go, uses the same motherboard (same replacement part for Kobra & Kobra Neo).

I can't even compile the firmware.bin if I change LCD to Mega or Chiron screen options in the firmware configuration.h.

Sclebo05

1.3y

FYI, I used Anycubic's specific repository for my model: https://github.com/ANYCUBIC-3D/Kobra_Neo Each of these repos should compile and run for the specific model. There is a specific codebase for the Go as well https://github.com/ANYCUBIC-3D/Kobra_Go

epiccoder2

1.3y

Thank you so much, this worked perfectly on my Anycubic Kobra

jojos38

1.3y

No problem!

Sad-Alternative5561

1.0y

i know i am late to the Kobra Party, but will be receiving my Kobra Neo tomorrow and have now looked into the whole Keil software side, and thank you u/jojos38 for the resources and tutorial.

So for my understanding, all buyers interested in flashing their machine basically are having to download a fully "obscure" (yes official from ARM) software, and deal with a ton of limitations (even ABL_BILINEAR_SUBDIVISION - stops the build with an Error), only due to the used Board?

i have 3 Ender 3s - Each with an SKR Mini E3 v2 - and a CR10s + CR10 each with an SKR 1.4 Turbo and have been compiling my own firmware for a while..

With this i am losing my temper lol, as the official UVPROJX is literally missing files like Tramming.h - so activating assisted tramming already puts the build into Tilt, ERRRORR..

But as i saw a few already changed to SKR boards, guess i'll do that on Day2 after the first print with the original board lol..

Cheers all

jojos38

1.0y

Yes I put an SKR 3 EZ on mine to get rid of the bad board. Keep in mine ABL sensor might stop working depending on the board, you would have to either design your own circuit or use another one

Sad-Alternative5561

11mo

i have an official creality probe here, i think they have the same diameter, but else, i'm sure there are alternatives, but i think i'll try the Klipper installs available before throwing out the board, an SKR 3 would be the next step after that though

jojos38

11mo

Alright good luck!

EnvironmentalBid9143

9mo

This was exactly what I was looking for!!

Now that I have a modified Kobra Max firmware working, I am on to try and get this firmware working on PlatformIO. THANK YOU!

jojos38

9mo

No problem have fun

Catnippr

7mo

I am on to try and get this firmware working on PlatformIO

If you ever manage to get that working, pls let us know! ;)

EnvironmentalBid9143

6mo

Well, I found out that my skills are not as good as I thought.

I am going to change the mainboard to a BTT SKR 3 EZ and then Marlin is a piece of cake!

Catnippr

6mo

Why don't you just flash Klipper on your stock mobo?

EnvironmentalBid9143

6mo

Well, tbh, I don't want to learn another firmware. I am fairly knowlegable with Marlin.

Gyerfry

8mo

Sorry to necro, but just adding on that I additionally had to install CMSIS 5.6 manually before it worked, found hidden under "Previous" in the ARM::CMSIS category on the right panel of the package manager. Then I was able to build.

C_Brick_yt

5mo

I got an Anycubic Kobra Neo with a MAXTEMP BED error whenever I turned it on second hand. I used your guide to compile the code In which I deactivated the heated bed, now I can use the printer again, thank you for your wonderful guide.

jojos38

5mo

No problem! Enjoy your printer

Farrit

1mo

Just now finding this. I love you so much.

jojos38

1mo

No problem haha

Character_Ad_7798

1.6y

I'm out of touch when it comes to this side of 3d printing. What does this actually do?

jojos38

1.6y

Basically this is just a way to make your own firmware for the printer. You take their source code of their firmware, change it and then "build" it into a file that you can install on your printer to have your changes

Dr_Moppig_Lp

5mo

Hello, I have a problem. I get the error here. Can someone tell me how to get rid of it?

Error #540: 'ARM::CMSIS:DSP:Library:1.8.0' component is not available for target 'firmware_Release'

jojos38

5mo

Hey I'm not sure sorry you should double check every step and photo from the tutorial

MutantXI

1.6y

Thank you so much for the instructions. For some reason, on GitHub, i do not see an option to download the uvprojx file. When i use "save link as" uVision states it cannot read the project. Is there something I missed?

MutantXI

1.6y

Apologies, I'm new. I downloaded the source folder and was able to compile without errors (just 127 warnings). Thank you again u/jojos38.

jojos38

1.6y

No problem and yep it's what you should have

MutantXI

1.6y

u/jojos38 Did you rename the firmware.bin file? When I put my SD card in the LCD slot the screen is just blank. I just compiled the vanilla kobra max code using your instructions above without changing anything.

jojos38

1.6y

I haven't tried on the Kobra Max, yeah I just put the firmware.bin in the SD card and then in the printer body and boot it, it beeps 4 times and then boot up

MutantXI

1.6y

Oh. So not in the sd slot in the lcd like the Vyper? Where you would normally put the sd card for printing?

jojos38

1.6y

On my Kobra it's in the body not the LCD, the LCD has its own firmware which is different

Due_Race_7945

1.6y

Swapping stepper drivers (so that extruder is at TMC2209 and Z-axis at TMC2208) makes available full stealthchop. God bless the silence. Though it's pretty tricky (lots of wire soldering involved) and seem to not solving the step missing completely.

jojos38

1.6y

Why did they do that I still don't understand, I might just change the motherboard and call it a day...

Due_Race_7945

1.6y

Bullseye. Tomorrow I'll try Klipper and if there are any problems, I'll just install SKR 1.4

jojos38

1.6y

Won't work, it requires soldering on the motherboard so that X uart address is 3 instead of 0

Due_Race_7945

1.6y

And one more thing I wanted to ask. After driver swapping I had to quadruple the extruder steps/mm while Z-axis works as it used to. Does it mean that micro-stepping changed? How can I set it back to normal (over 1000 steps/mm on extruder seems to be overwhelming)? Why didn't Z-axis change micro stepping?

jojos38

1.6y

Oh I'm sorry I have no clue about that one, I'm still a beginner when it comes to Marlin and Klipper

Due_Race_7945

1.6y

But it was pretty interesting to dig in that stuff. (it's my first printer)

Due_Race_7945

1.6y

And thanks for trying to make this printer usable for people who don't want to disassemble it)

jojos38

1.6y

No problem haha

JoelFilipePT

1.6y

I see that you managed to reduce motherboard fan noise, how exactly did you do this?
I have fixed the issue by installing a voltage step down and running the fan at 17.5V, will it interfere?

jojos38

1.6y

I used the M710 command, it shouldn't interfere, I had one too but I removed it.

M710 A1 I4 S5 for example, the smaller I and S numbers, the quieter. Maximum is 255 minimum is 0. S is for when the motherboard is under load and I is for idle

[deleted]

1.6y

Is there any way to do this in VS Code with Autobuild Marlin?

jojos38

1.6y

Sadly not, PlatformIO does not supports the HDSCF460 chip used in the Kobra

[deleted]

1.6y

Fuck. Well, thanks for the quick reply!

jojos38

1.6y

No problem

Training-Rate-9150

1.5y

Hi Jojos,

I managed to compile all code in linux now, but i have problems with the linker file(scatter file) for the HDSC processor. I miss exact instructions, where to put all code and data into the memory map of the processor. Can you provide me with such information ?

Where did you get the information from, which you shared on 1drive ?

Thank you so much for your support.

jojos38

1.5y

Hello, this is a bit over my competences I think haha, I simply compiled and flashed the firmware

Jo-Kim

1.2y

Hi, did you ever manage to get this working? I can fully compile and successfully generate a bin file, however after flashing my printer with it, it just does nothing, even after rebooting…

skowie90

1.5y

Works great, but is it possible for you to make the same firmware with a better temperature regulation? The Kobra is not Constant working! a sample... the hotend temp. is 215 and the bed temp. is 50... it work from 211 to 217 an 47 to 53! It runs not liniear! MAybe it is posible for you to fix that! Afte PID Tuning, it is the same

jojos38

1.5y

Hello! I tried fixing this issue but never was able to, the only time I got the temp to work properly was after changing the motherboard

Ok_Fix5418

1.4y

I get an error message when i open anycubic.uvprojx file saying Error #540 component is not available for target. What do I do? Thanks in advance

Update: I got the firmware.bin file but I can't get it to work. Thanks

jojos38

1.4y

Hey, if you followed the tutorial closely and did everything like in the tutorial I have no idea tbh, I don't know what this error means

Ok_Fix5418

1.4y

Thanks

Catnippr

1.3y

I hope I didn't oversee it in case this question was already posted by anyone: Does anyone know if/how it's possible to create the firmware.bin from the repository files w/o using Windows? I only have Linux (Ubuntu) installed..

jojos38

1.3y

Someone else tried and didn't succeed. Keil uVision is only available on Windows you'll have to setup a VM or get your hand on a Windows installation somehow

Catnippr

1.3y

That's a pity.. I told myself never to use Win again many years ago and now I probably have to break my promise - don't like that idea LOL

But thanks for answering my question tho! ;)

jojos38

1.3y

Don't worry Windows got a lot better than years ago haha, good luck

(That's also the reason I changed the motherboard of my printer)

Salt_Function_3019

1.1y

I followed these instructions to the letter and went to compile the latest Kobra Plus firmware from GitHub. I got an error in the Build Output window stating that MicroLIB does not support C++ but it did output a firmware.bin file that was about 181 kb. It would not flash to the printer. The pre-compiled file from AnyCubic is about 480 kb.

I then disabled MicroLIB and built the file again. It was about 192 kb this time but still would not flash to the printer.

What am I doing wrong?

jojos38

1.1y

I think it means you didn't install Keil v36 if I remember

Salt_Function_3019

1.1y

Unfortunately, I just checked in Help...About in Keil and it says Toolchain: MDK-ARM Community Version 5.36.0.0.

The various components (compiler, assembler, etc.) report v5.06 update 7 (build 960).

jojos38

1.1y

It's normal for the file to be smaller but now that I think, if I remember right this warning if normal, the .bin file should flash on the printer maybe your SD card is wrong

Salt_Function_3019

1.1y

Hmm. I was using the 8 GB card that came with the printer. Will try another card and see. Should I try flashing the version that gave the MiniLIB error?

Thanks for the replies!

jojos38

1.1y

I don't remember exactly but I think the MiniLIB error is normal

Salt_Function_3019

1.1y

And you were right. I tried a different microSD and it flashed on the first try. I needed to raise the max temp on E0 since I switched to a V6 hotend and this did the trick. Thank you!

jojos38

1.1y

Awesome, no problem! Have fun

Adventurous_Tap6768

10mo

The PSN dont work at the moment. With the nc License i cant compile because the limit. Can anyone compile a firmware for me?

Fallstern

10mo

u/jojos38 Is it possible to compile firmware with another version of Marlin& I have Kobra Go and want to update Marlin to v 2.1

jojos38

10mo

Sadly it isn't easily doable at all. They use a different C++ version or whatever so there are many changes to make so that it compiles

InterestLocal6083

8mo

I followed all of the instructions and they went smoothly until I opened the anycubic.uvprojx file, I got this error https://imgur.com/CrIKM0k , do you have any idea how I can fix this?

jojos38

8mo

Hey, are you sure you downloaded the right version of Keil? In the post I gave a specific version, any version above won't work

It's version 5.36

InterestLocal6083

8mo

I used the download link you posted in the instructions and the program has 536 in the name so I am pretty sure its the right version. Thx for replying so quickly btw. When I ignore the errors and do build target anyways, it outputs this in the build output:

Build started: Project: anycubic
*** Using Compiler '', folder: 'C:\Keil_v5\ARM\ARMCLANG\bin\'
*** Warning: You are compiling one or more files of source type C++ and have selected 'use MicroLIB'. MicroLIB does not support C++!

Build target 'firmware_Release'
compiling main.cpp...
--- Error: failed to execute 'C:\Keil_v5\ARM\ARMCLANG\bin\ArmCC'
".\obj\firmware.axf" - 1 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed: 00:00:01

jojos38

8mo

You can ignore the warning it's normal, I'm not sure about the error though.. Looks like it could be badly installed maybe try a reinstall I'm not sure

InterestLocal6083

8mo

does any of this look different than it should be? https://imgur.com/XXGfSZf

jojos38

8mo

Nope.. Looks good to me

InterestLocal6083

8mo

I'll just try the whole process again from scratch

jojos38

8mo

Hope it'll work

Moderator removed comment

6mo

jojos38

6mo

Hi! I'm sorry I don't use the official Anycubic firmware anymore as I changed the motherboard, however it should be fairly easy to do that by checking the Marlin documentation. You will need to edit the Configuration.h file

Moderator removed comment

6mo

jojos38

6mo

I never did that myself I don't know myself where it is but you can find many tutorials on how to do it.

https://www.youtube.com/watch?v=J9vxJT5Tgh4 you will have to fast forward the video to find when he talks about height

You can also use the M201 command using a computer and a USB to send commands:
https://marlinfw.org/docs/gcode/M201.html

When you made the modification simply rebuild the firmware and flash the .bin file to try your code

JimBob4842

5mo

I'm getting the following error

Error #540: 'ARM::CMSIS:DSP:Library:1.8.0' component is not available for target 'firmware_Release'

JimBob4842

5mo

Never mind, fixed it. Thank you for the tutorial!

jojos38

5mo

No problem! Have fun

Playful_Ad396

3mo

Can somebody tell me where the outputted Firmware Bin file is located after building with Keil

jojos38

3mo

The output file will be located under workspace/firmware.bin

workspace is the folder of the git project as far as I remember

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