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The FINGER Unit (FPC1020A) is an all-in-one capacitive fingerprint sensor with built-in fingerprint registration, verification, and management. It communicates via UART and connects to M5Stack devices through the Grove C port. Configurable security levels and fast matching make it suitable for biometric access control projects.

Key Features

  • All-in-One Sensor – Integrated fingerprint collection, processing, and matching
  • UART Communication – Connects via Grove C port on M5Stack
  • Configurable Security – 5 security levels (default: level 3)
  • Fast Processing – Fingerprint matching in < 0.45 seconds
  • Compact and Low Power – Suitable for portable projects

Specifications

  • Fingerprint Capacity – 1000 / 1700 / 2000 / 3000 (default: 1700)
  • False Acceptance Rate – < 0.001% (security level 3)
  • False Rejection Rate – < 0.1% (security level 3)
  • Security Levels – 1–5 (default: 3)
  • Interface – UART
  • Baud Rate – 9600–115200 (default: 19200)
  • UART Settings – 8N1 (8 data bits, no parity, 1 stop bit)
  • Characteristic Size – 193 bytes
  • Processing Time – < 0.45 seconds
  • Operating Temperature – -10°C to 60°C
  • Operating Humidity – 20%–80%

Pin Mapping (Grove C)

  • M5Core U2RXD → FINGER TXD
  • M5Core U2TXD → FINGER RXD
  • 5V → 5V
  • GND → GND

Ideal For

  • Fingerprint attendance systems
  • Biometric locks and access control
  • Identity verification projects

Package Contents

  • 1× FINGER Unit
  • 1× Grove Cable

Resources

The Finger Print Unit (FPC1020A) appears in the following collections:

SKU M5-U008