Adafruit 751 Fingerprint Sensor
Best reliable biometric module for DIY security enthusiasts.
This optical module makes adding biometric security to DIY projects surprisingly simple. With an onboard DSP chip handling all the heavy lifting, it offloads complex image processing from your microcontroller, allowing for quick and reliable fingerprint verification.
$25.00
Who it's for
- Makers looking for straightforward integration with Arduino or Python platforms
- Hobbyists building access control systems for small groups or families
- Developers prioritizing quick response times in their security hardware designs
Who should skip it
- Users operating in harsh environments or outdoor settings with variable conditions
- Novice builders unfamiliar with serial communication protocols and voltage levels
- Designers creating ultra-compact or slim wearable technology projects
Performance breakdown
Integration Ease
Library support makes connecting to Arduino and CircuitPython incredibly straightforward.
Authentication Speed
Sub-second imaging ensures quick access without noticeable lag for users.
Storage Capacity
One hundred sixty-two templates are sufficient for small-scale, personal security projects.
Security Reliability
Low false acceptance rates provide dependable protection for DIY access systems.
Form Factor
Compact dimensions allow for seamless embedding into tight, custom enclosures.
Environmental Robustness
Solid temperature tolerance makes it suitable for most indoor DIY applications.
Key Specs
Supply voltage
3.6 - 6.0VDC
Operating current
120mA max
Peak current
150mA max
Fingerprint imaging time
<1.0 seconds
Window area
14mm x 18mm
Storage capacity
162 templates
False Acceptance Rate
<0.001% (Security level 3)
False Reject Rate
<1.0% (Security level 3)
Interface
TTL Serial
Baud rate
9600, 19200, 28800, 38400, 57600
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