Why it worked
The video combines a relatable personal event (birthday) with a visually appealing DIY electronic project. The creator's skill in coding, art, and electronics, presented in a concise and engaging way, appeals to a wide audience interested in tech and creative projects.
Summary
The creator builds a custom electronic birthday device featuring an animated cake on a small screen. The process involves coding on an ESP32 microcontroller, designing pixel art for the animation, and soldering the components onto a custom PCB.