i want to try modding the controller firmware - are there instructions available on how to set up the toolchain and how to upload a new firmware?
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Hello @scanner_darkly!
Welcome to the forum 
There arenāt still any instructions for this, but Iāll give you a quick guide.
First of all youāll need the Arduino IDE to compile, or the Visual Studio Code with the Arduino environment set-up.
In our Gitlab repository you will find the libraries and hardware-def folders (rename hardware-def to hardware). Both need to be placed inside your Documents/Arduino folder.
Then open the IDE and go to Tools -> Board -> Board Manager, and install the
Arduino SAMD boards package.
After this download the ytx-controller folder from our repo containing the controllerās code and open it with the IDE.
You can tweak or add whatever you want. Make sure you donāt add too much overhead to the controllerās loop time so the hardware scanning doesnāt degrade too much.
If you open the serial monitor, and press send the letter ātā at 250.000 bps you can enter test mode and with the āmā command you can print loop time.
To compile the firmware, go to Tools -> Board and always select Yaeltex Kilomux and not the Yaeltex Kilomux (test) version.
Then go to Sketch -> Export compiled binary and if the compiling succeeds, you will see the binary file inside the ytx-controller folder.
To upload the firmware, check this guide: How to update firmware for v2 controllers using the desktop loader
This should get you all set to start building and uploading firmware!
If you have any doubts or ideas youād like to share about specific feature implementation, weāll be glad to see them on this forum 
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happy to report i was able to make a small change / build and upload successfully. the uploader works great!
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Iām curious to try this for tweaking the color palette, but compiling arduino firmware is new for me.
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@mike you have both me and @scanner_darkly to help in case you decide to give it a go!
If one of the steps give you trouble Iāll try to explain it better
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yeah itās pretty straightforward and iāll be happy to help with any questions!
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Okay! Iāve added the libraries and hardware-def folders, and installed the SAMD package, and Iāve opened ytx-controller.ino. but I donāt see āYaeltex Kilomuxā under Tools > Board.
@mike, if I recall (I wasnāt taking notes) I had to rename /hardware-def to /hardware in my /Users/[me]/Documents/Arduino folder (this is on Windows) before Arduino Studio picked up the Kilomux board definition. Does that work?
Overall Iāve got these directories with things in them:
/Documents/Arduino/hardware/yaeltex/samd/*
/Documents/Arduino/libraries/Adafruit_NeoPixel/*
/Documents/Arduino/libraries/extEEPROM-master/*
/Documents/Arduino/libraries/MIDI-LIB-USB/*
/Documents/Arduino/libraries/MIDIUSB/*
and itās working fine.
If you want to compile the aux firmware, which handles all of the low-level LED stuff except the StatusLED, see here and here (those are side notes from the main thread and should probably get moved to their own thread).
(BTW, I think that youāre also experiencing at least one of the two problems @francoytx and I are debugging in that threadānot sure yet if the problems are the same or related)
Sorry @mike! I added the step of renaming the folder to the original post.
If you already opened the IDE before adding this folder, you need to restart it for it to find the folder.
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iām trying to build the SAML11-NeoPixel project but getting an error that SAMD11-NeoPixel\SAMD11-NeoPixel.cproj file is missing - looks like itās not in the repo. could you add it?
Hi @scanner_darkly!
It seems it was in .gitignore 
canāt remember why, but I uploaded it now, you can give it a try.
Hereās the file: SAMD11-NeoPixel.cproj (68.4 KB)
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success! iām able to build the aux firmware and confirmed it loads properly. thanks for your help!
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