Lanyardpcbcard

PCB Business Card-bom.csv

PCB-Business-Card

A PCB Business card that shows your Spotify activity using lanyard in real time. Tap the card with a phone to show what song is playing on Spotify.

Powered over USB-C from a phone or any power bank. Connects to a phone hotspot (or any wifi) for the Lanyard WebSocket.

Screenshots

Why I built this

I wanted a business card that has a cool twist. Plain cards feel boring to show and they are all the same. This one shows what I'm listening to, lets someone tap it to hear the same song, and has my GitHub a QR scan away. Business cards are supposed to grab people's attention, and I would say this one is different than other business cards.

Hardware

The ESP32 rewrites the NDEF URL every time a track changes over I2C, NT3H2111 (NFC Module) has I2C and RF interface simultaneously. When you are playing something NFC goes to spotify when nothing is playing goes to GitHub (for now). 100x75mm PCB. USB-C powers it with any power bank (im personally planning to use my phone). ESP32 is going to be hand soldered to save money but everything else is JLCPCB assembly

Wiring

Firmware

firmware/main.ino

Libraries needed: TFT_eSPI, TJpg_Decoder, ArduinoWebsockets, ArduinoJson. Board: ESP32S3 Dev Module.

Bill of Materials

SMD parts assembled by JLCPCB. ESP32 and the display are sourced separately.

Repository Structure

PCB-Business-Card/
├── Firmware/
│   └── main.ino
├── lanyardpcbcard-backups/
├── libs/
│   └── easyeda/
│       ├── easyeda.3dshapes/
│       ├── easyeda.pretty/
│       └── easyeda.kicad_sym
├── production/
│   ├── backups/
│   ├── CPL-lanyardpcbcard.csv
│   ├── bom.csv
│   ├── lanyardpcbcard.step
│   ├── lanyardpcbcard.zip
│   └── ...
├── LICENSE
├── README.md
├── lanyardpcbcard.kicad_pcb
├── lanyardpcbcard.kicad_pro
├── lanyardpcbcard.kicad_sch
└── lanyardpcbcard.kicad_prl

License

MIT