FPM10A Optical Fingerprint Sensor Module for Arduino Projects Short description A compact optical fingerprint reader module designed for integration with microcontroller projects. The module captures fingerprint images and communicates over a serial interface for enrollment, verification, and access control applications. Key benefits Secure, convenient authentication: Replaces keys and codes with biometric verification for consistent userbased access control. Simple integration: Serial communication interface eases connection to Arduino and other microcontrollers for rapid prototyping and deployment. Spaceefficient design: Small form factor fits into door lock assemblies, cabinets, and portable enclosures without requiring extra space. Practical and reliable: Optical sensing provides clear fingerprint capture for enrollment and subsequent checks, reducing setup complexity for developers. What this module does Captures fingerprint images using an optical sensor and sends data via a serial communication interface to a host microcontroller. Supports fingerprint enrollment, matching request, and verification flows when paired with hostside code or libraries. Interfaces directly with microcontrollers that support standard serial communication protocols. Compatibility and integration Designed for use with Arduino and other microcontrollers that provide a UART serial connection. Typical connections: power, ground, TX, RX, and optional control pins depending on host implementation. Works with commonly available serial libraries and community examples for quick testing and deployment. Form factor and materials Compact sensor module suitable for embedding in small enclosures and control panels. Durable sensor surface intended for frequent fingerprint use in everyday access applications. Performance and reliability Optical fingerprint capture is appropriate for fast enrollment and repeatable verification in typical indoor environments. Intended for use in projects where biometric authentication improves convenience and security over traditional keys or codes. Example use scenarios Electronic door lock: Use the module with an Arduinobased lock controller to allow authorized users to unlock doors by fingerprint instead of a key or passcode. Secure storage cabinet or tool locker: Add biometric access to cabinets to control access to tools or sensitive items and reduce lost keys or shared passcodes. Access control and attendance terminal: Implement fingerprintbased signin for small offices or workshops to simplify user identification and reduce credential management. Quick integration tips Connect module power and ground first, then TX and RX to the corresponding microcontroller serial pins. Use a stable 3.3V or 5V supply as required by your setup and confirm voltage compatibility before powering the module. Start with a simple enrollment and verification example to confirm communication before building more complex access logic. What to expect in a project A straightforward way to add biometric authentication to microcontroller projects. Reduced need for password sharing and physical keys in small access control systems. A compact sensor that can be integrated into locks, cabinets, and standalone authentication devices. Model reference FPM10A fingerprint sensor module with optical sensing and serial communication interface for microcontroller integration.