PCB USB Keychain

Fascinated in NFCs and PCB creation, I decided to combine both of my curiosities into one project that I could potentially use and carry with me everywhere.

Inspired by cassette tapes, I 3D modeled and printed the circular cassette tape with a clear lid and a keychain hole at the top. I then created the circuit board in the same shape to fit the model, and attached an NFC tag behind it. In addition, I added a USB port at the top that could also function as a USB plugin. So far, it doesn't have any functions to the USB, but I wish to make a working version in the future.

With the NFC, I linked this portfolio website, so whenever I needed to show people my website, all I had to do was give them this PCB keychain to scan with their phones, and they could open my website in seconds.

Year

Summer 2025

Tools

Arduino, Fushion360, 3D printer, KiCAD, PCBWay