BZCard – Interactive Electronic Business Card

In 2025 I finally finished the BZCard. The final version includes everything I envisioned: an OLED screen for menus and contact info, capacitive touch buttons, smart power management with sleep and charging states, and even four retro mini-games, Snake, Brick Breaker, Tetris, and Death Star. After years of returning to this project, it’s complete. I uploaded a demo video to YouTube to showcase it working at last.

Up until this point the BZCard was just a naked PCB. In 2025 I designed and 3D printed the first custom enclosure. This gave the project a whole new feel: instead of something that had to be kept in a wallet, it could now be displayed, carried, and handled like a finished object. The enclosure made it feel much closer to a complete device.

Between 2019 and 2022, the project went through long pauses and bursts of activity. Work and life kept pulling me away, but each time I returned I made new progress, redesigning PCB layouts, improving the capacitive touch sensing, and testing different ways to manage power. It was slow progress, but it kept moving forward.

By 2016–2017 I managed to build the first prototype. It used a small OLED display and a microcontroller, and while it was very basic, it worked! Powering it on and seeing information appear on the screen was a big milestone. I even recorded some short clips of these early experiments, proof that the project was starting to take shape.

I first sketched out the concept for an interactive business card in 2014. At the time, it was nothing more than doodles in a notebook and some wild ideas about making a card that could light up, display text, and maybe even react to touch. It felt far-fetched, but the seed of the project was planted.