My final project for Swartzendruber's Digital Electronics class in 2019, built w/ Skillet (https://github.com/killerskyman). It's a shoe that ties itself.
It's under the BSD license with an additional clause stating that you can't use this for PLTW.
The CAD is made in Inventor, and the PCB is made in EAGLE. To build the code, you must make the PCB as specified, bootload it, then upload code via FTDI.
Use the script
build with the following parameters:
./build main.ino <your TTY here>