The R307 Optical Fingerprint Reader Sensor Module is a biometric sensor commonly used in embedded systems to enable fingerprint-based authentication. It is widely utilized in security systems, access control, attendance tracking, and various IoT. applications.

Key Features:-

1. Optical Sensor Technology:

   • Uses optical scanning to capture high-resolution fingerprint images.
   • Durable and reliable in various environmental conditions.

2. Fingerprint Processing:

   • Can store up to 1,000 fingerprints (template capacity may vary by firmware version).
   • Provides functionalities for fingerprint enrollment, comparison (1:1), and searching (1:N).

3. Interfaces:

   • Supports UART communication, making it compatible with microcontrollers and other embedded systems.
   • Some versions may also support USB or TTL communication.

4. Power Requirements:

   • Operates on 3.3V or 5V DC, depending on the model.

5. Compact Design:

   • Easy to integrate into small electronic devices.

Applications:

• Access Control Systems
• Attendance Systems
• Secure Door Locks
• Point-of-Sale Terminals
• IoT Security Devices

Technical Specifications:

• Image Resolution: 508 DPI
• Sensing Area: ~14mm x 18mm
• Template Size: ~256 bytes
• Verification Speed: ~1 second (depending on database size)
• Communication Baud Rate: Adjustable (9600, 19200, 38400, 57600, 115200 bps)

Working Principle:

1. Fingerprint Enrollment: The user places a finger on the sensor, which captures the fingerprint image and converts it into a template.
2. Template Storage: The processed template is stored in the module's internal database.
3. Authentication: The sensor compares the input fingerprint with the stored templates for verification or identification.

Resources and Documentation:

You can find detailed datasheets, wiring guides, and programming examples online, typically on electronics platforms like:

• Adafruit
• SparkFun
• Datasheet Archives

If you'd like, I can help find specific datasheets or examples for interfacing the R307 with a microcontroller like Arduino or Raspberry Pi. Let me know!