- Output hex file is at `"PrusaFirmware/lang/firmware.hex"` . In the same folder you can hex files for other languages as well.
4. Connect your printer and flash with PrusaSlicer ( Configuration --> Flash printer firmware ) or Slic3r PE.
- If you wish to flash from Arduino, follow step [2.c](#2c) from Windows build first.
_Notes:_
The script downloads Arduino with our modifications and Rambo board support installed, unpacks it into folder `PF-build-env-\<version\>` on the same level, as your Prusa-Firmware folder is located, builds firmware for MK3 using that Arduino in Prusa-Firmware-build folder on the same level as Prusa-Firmware, runs secondary language support scripts. Firmware with secondary language support is generated in lang subfolder. Use firmware.hex for MK3 variant. Use `firmware_\<lang\>.hex` for other printers. Don't forget to follow step [2.b](#2b) first for non-MK3 printers.
* Open Arduino and navigate to File -> Preferences -> Settings
* To the text field `"Additional Boards Manager URLSs"` add `https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/package_prusa3d_index.json`
* The platform.txt file can be found in Arduino instalation directory, or after Arduino has been updated at: `"C:\Users\(user)\AppData\Local\Arduino15\packages\arduino\hardware\avr\(version)"` If you can locate the file in both places, file from user profile is probably used.
For example: `"compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections"`
_Notes:_
_In the case of persistent compilation problems, check the version of the currently used C/C++ compiler (GCC) - should be at leas `4.8.1`;
If you are not sure where the file is placed (depends on how `"Arduino Software IDE"` was installed), you can use the search feature within the file system_
_Name collision for `"LiquidCrystal"` library known from previous versions is now obsolete (so there is no need to delete or rename original file/-s)_
**b.**<aname="2b"></a> In the subdirectory `"Firmware/variants/"` select the configuration file (`.h`) corresponding to your printer model, make copy named `"Configuration_prusa.h"` (or make simple renaming) and copy it into `"Firmware/"` directory.
**d.** Run `"Arduino IDE"`; select the file `"Firmware.ino"` from the subdirectory `"Firmware/"` at the location, where you placed the source code `File->Open` Make the desired code customizations; **all changes are on your own risk!**
* or you can also save the output code to the file (in so called `HEX`-format) `"Firmware.ino.rambo.hex"`: `Sketch->ExportCompiledBinary` and then upload it to the printer using the program `"FirmwareUpdater"`
_notes: Script and instructions contributed by 3d-gussner. Use at your own risk. Script downloads Arduino executables outside of Prusa control. Report problems [there.](https://github.com/3d-gussner/Prusa-Firmware/issues) Multi language build is supported._
- follow the Microsoft guide https://docs.microsoft.com/en-us/windows/wsl/install-win10
You can also use the 'prepare_winbuild.ps1' powershell script with Administrator rights
- Tested versions are at this moment
- Ubuntu other may different
- After the installation and reboot please open your Ubuntu bash and do following steps
- run command `apt-get update`
- to install zip run `apt-get install zip`
- add few lines at the top of `~/.bashrc` by running `sudo nano ~/.bashrc`
- If your Windows isn't in English the Paths may look different
Example in other languages
- English `/mnt/c/Users/<your-username>/Downloads/Prusa-Firmware-MK3` will be on a German Windows`/mnt/c/Anwender/<your-username>/Downloads/Prusa-Firmware-MK3`
#### Compile Prusa-firmware with Ubuntu Linux subsystem installed
- open Ubuntu bash
- change to your source code folder (case sensitive)
- run `./PF-build.sh`
- follow the instructions
### Using Git-bash under Windows 10 64-bit
_notes: Script and instructions contributed by 3d-gussner. Use at your own risk. Script downloads Arduino executables outside of Prusa control. Report problems [there.](https://github.com/3d-gussner/Prusa-Firmware/issues) Multi language build is supported._
- Download and install the 64bit Git version https://git-scm.com/download/win
- Also follow these instructions https://gist.github.com/evanwill/0207876c3243bbb6863e65ec5dc3f058
- Download and install 7z-zip from its official website https://www.7-zip.org/
- If your Windows isn't in English the Paths may look different
Example in other languages
- English `/mnt/c/Users/<your-username>/Downloads/Prusa-Firmware-MK3` will be on a German Windows`/mnt/c/Anwender/<your-username>/Downloads/Prusa-Firmware-MK3`
- English `ln -s /c/Program\ Files/7-Zip/7z.exe zip.exe` will be on a Spanish Windows `ln -s /c/Archivos\ de\ programa/7-Zip/7z.exe zip.exe`
Q:I built firmware using Arduino and I see "?" instead of numbers in printer user interface.
A:Step 1.c was ommited or you updated Arduino and now platform.txt located somewhere in your user profile is used.
Q:I built firmware using Arduino and printer now speaks Klingon (nonsense characters and symbols are displayed @^#$&*°;~ÿ)
A:Step 2.c was omitted.
Q:What environment does Prusa use to build the firmware in the first place?
A:Our production builds are 99.9% equivalent to https://github.com/prusa3d/Prusa-Firmware#linux this is also easiest way to build as only one step is needed - run single script, which downloads patched Arduino from github, builds using it, then extracts translated strings and creates language variants (for MK2x) or language hex file for external SPI flash (MK3x). But you need Linux or Linux in virtual machine. This is also what happens when you open pull request to our repository - all variants are built by Travis http://travis-ci.org/ (to check for compilation errors). You can see, what is happening in .travis.yml. It would be also possible to get hex built by travis, only deploy step is missing in .travis.yml. You can get inspiration how to deploy hex by travis and how to setup travis in https://github.com/prusa3d/MM-control-01/ repository. Final hex is located in ./lang/firmware.hex Community reproduced this for Windows in https://github.com/prusa3d/Prusa-Firmware#using-linux-subsystem-under-windows-10-64-bit or https://github.com/prusa3d/Prusa-Firmware#using-git-bash-under-windows-10-64-bit .
Q:Why are build instructions for Arduino mess.
Y:We are too lazy to ship proper board definition for Arduino. We plan to swich to cmake + ninja to be inherently multiplatform, easily integrate build tools, suport more IDEs, get 10 times shorter build times and be able to update compiler whenewer we want.
