A PCB business card that shows you your own pulse. Optical PPG sensor drives a ten-LED heart; NFC tag serves the vCard with the card switched off. ATtiny1616, MAX30102, CR2032. KiCad sources, firmware and power measurements.
avr embedded electronics open-hardware nfc heart-rate kicad fnirs photoplethysmography ppg biomedical-engineering ntag max30102 coin-cell pcb-art attiny1616 pcb-business-card megatinycore
-
Updated
Aug 21, 2026 - HTML