L-ink Card is a smart NFC card with an electronic-ink display built into the card form-factor, aimed at solving everyday pain points of IC cards and giving them a “cooler” interface. The project uses an STM32L0-series microcontroller paired with an ST25DV NFC chip, an e-ink screen, and battery management so the card can display dynamic info while also serving as an NFC tag/card. Its functionality may include showing balance, last transaction, QR codes, or other custom info on the e-ink...