Inspired by the SpaceX Falcon 9 and Heavy boosters, I wanted to build a thrust vector control motor mount for model rockets. This was my first real CAD project, having started designing the first avionics board in 8th grade. The motor mount is 3D printed out of Rigid 10k on a Formlabs Form 2 printer and it is being controlled by two servos: one for each axis. The control board is a custom PCB which features two PWM outputs, four pyro channels for parachute deployment, a motor controller for a roll-control reaction wheel, a barometer, and a gyro for guidance. Version 2 of the board featured all SMD components for compactness. While I never made a flying actively controlled model, the avionics computer flew on a high powered rocket, logging data and testing in-flight software.
V1 avionics board
V1 avionics board test flight