Who does not like life-like hexapod robots?
A high-performance carbon quadcopter, literally indestructible.
Insanely large and dangerous octorotor drone project, built around steadicam-like camera stabilizer when similar commercial units were financially out of reach of hobbyists.
A small scratch-build six-rotor drone, before these things became commonly available toys from grocery stores
I wanted to get an RC plane and have fun with it. It did not go well. I needed to make a choice: either learn to fly model planes, or do what an embedded electronics developer should do.
I built my first drone in 2010, when essential sensor components became affordable. This project started it all for me, and opened me doors to interesting commercial projects.
An eight-legged acrylic CNC machining exercise project to get practical experience in designing parts and toolpaths for machining.