There's no real build instruction for Noise Nugget hardware because it only consist of a small electronic circuit.

You can assemble it by soldering each components according to the board design available in the repository.

However, some of the components are very small and difficult to solder by hand. So I recommend using PCB assembly services such as MarcroFab.

The Noise nugget software is developed in Ada, so you will need an the arm-elf GNAT Ada compiler. You can get and install the community edition from here: https://www.adacore.com/download

The sources are hosted on GitHub so you can get them with the git tool:

$ git clone https://github.com/Fabien-Chouteau/noise-nugget

Go into the directory:

$ cd noise-nugget

 Get the dependencies with the git submodule command:

$ git submodule update --init --recursive  

With the compiler installed, go to the software directory:

$ cd software

and use gprbuild to compile the sources:

$ gprbuild -XGENERATOR_TYPE=sampler

"-XGENERATOR_TYPE" defines the mode of the Noise Nugget. I can be:

• sampler
• synth
• fx-flanger 

Create a DFU image with this command

$  arm-eabi-objcopy obj/main-sampler -O binary obj/sampler.bin

 Press the DFU button of the Noise Nugget while plugging the USB cable. Release the DFU button and use this command to flash the firmware

sudo dfu-util -d 0483:df11 -a 0 -s 0x08000000 -D obj/sampler.bin