Toolbox is a program card for the Modular Music Thing Workshop System.
It's inspired by the utility section of the 0-Coast. It has a mixer/VCA with attenuverter, a second simple VCA, S&H, clock generator, clock with probability and a noise source with different types of noise (different sampling rates).
See dist/ for pre-compiled .uf2 images.
You should be able to build this with CMake.
mdkir build
cd build
cmake ..
make
Thanks to TomWhitwell for building the Workshop System and chrisgjohnson for ComputerCard.