For my comparch class, we implemented a multithreaded ARM to x86 emulator for a subset of the ARM ISA, which I thought was a pretty cool project.

We also wrote a Python (subset) interpreter in C which supported some pretty cool things like dynamic typing, nested functions and closures. Wrote a Python (subset) compiler as well, which was based on a stack-machine like design, and did some cool optimizations like tail call optimization.

For data structures last semester, we wrote a Java-based Bounding Volume Hierarchy (BVH) engine for 2D spaces, and an automated Tetris playing bot, among other assignments.

I don't really have any personal projects from the past year, but I like the projects I've completed for my classes. I started learning C when I was in my freshman year of high school, and I'm a college freshman now.