Nick Poole
The Cosmic Aggressor is a badge-style 'Space Invaders' clone based on the stacked-FR4 construction technique.
The processor is a 32u4, firmware written in Arduino. LEDs are APA-102-2020 6-pin addressable.
This project is free and open source, check out the github repo.
I built this badge as a stacked PCB construction demo for Supercon 2019. For more PCB construction hacks, check out my talk:
