Adafruit Fingerprint Sensor Module GT-511C3
Best biometric module for DIY electronics and secure authentication projects.
This is the fastest route to adding biometric security to your DIY projects without needing a degree in image processing. It offloads all the heavy lifting to its internal processor, making integration incredibly simple. You sacrifice granular control over the raw data, but you gain a reliable, plug-and-play authentication system.
$62.99
at
Tejar
Who it's for
- Makers needing quick setup with Arduino and other microcontrollers
- Developers building small-scale security or access control systems
- Engineers requiring simple, reliable serial communication for their projects
Who should skip it
- Security-conscious users needing protection against sophisticated spoofing attempts
- Designers building battery-operated devices with strict power budgets
- Product designers creating compact or aesthetically minimalist hardware
Performance breakdown
Integration Ease
TTL serial interface makes connecting to microcontrollers incredibly straightforward.
Processing Speed
Internal DSP handles image processing quickly for near-instant authentication.
Storage Capacity
162 templates are sufficient for small projects but limited for enterprise.
Software Support
Excellent library ecosystem simplifies coding for both Arduino and CircuitPython users.
Authentication Accuracy
Low false acceptance rates provide reliable security for hobbyist applications.
Form Factor
Compact, lightweight design fits easily into tight, custom-built enclosures.
Key Specs
Sensor Technology
Optical
Max Fingerprints Stored
162
Recognition Speed
1000 milliseconds
Material
Plastic
Mounting Option
Freestanding
Interface Type
USB-A
Form Factor
Desktop Standalone
Security Standard Compliance
Biometric API Support
Supply voltage
3.6 - 6.0VDC
Storage capacity
162 templates
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