Most of these are not really complete projects, but some small things I did for learning a new thing.
I designed this PCB with KiCAD. It is a simple test PCB just with the essential connections needed to run and program the surface mounted STM32G030 by SWD. Hand soldering the TSSOP20 was a little tricky. Manufactured with JLCPCB.This is a pretty useless project, but it was a good learning experience if I ever want to convert a design from a prototype to a more finalized PCB.
I will try to use this for inverted pendulum :P
I started working on a 2 wheel balancing robot. It can balance briefly, but the oscillations get bigger and make it fall over. After a lot of PID tuning, I still cannot get it to balance. Maybe I need encoders on the motors. I have stopped working on this for now.