TTL Biometric Fingerprint Scanner (GT-521F32)

SparkFun GT-521F32 Biometric Scanner: if you don’t want to use a key, you don’t have to!

Do you want to develop an electronic lock system using fingerprint identification? Or a device that can only be turned on when it detects the fingerprint of its inventor? You can do that – and much more – with the GT-521F32 fingerprint scanner. This module is the economical version of the GT-521F52 scanner and can store up to 200 different fingerprints. It only needs <1.5 seconds to identity them!

Just register each fingerprint by pressing your finger against the reader 3 times. It only takes 3 seconds to store a new fingerprint. The database of prints can then be distributed to other modules. Each fingerprint generates a template matching its analysed version. You can also retrieve the image of a fingerprint from the module.

Technical specifications of the GT-521F32 biometric reader

• ARM Cortex M3 Core microprocessor
• Communication protocol: UART and USB 2.0 Full Speed
• Default transmission rate: 9,600 bps
• False acceptance rate: < 0.001%
• False rejection rate: < 0.1%
• Recording time: 3 sec (for 3 fingerprint scans)
• Identification time: < 1.5 sec
• Operating voltage: 3.3 to 6 Vdc approx.
• Working current: < 130 mA
• Touch area:
  • Operating voltage: 3.3 Vdc
  • Working current: < 3 mA
  • Standby current: < 5 µA
• Ultra-thin optical sensor
• Resolution: 450 dpi
• Image size: 258 x 202 pixels
• Capable of 360° recognition
• Storage capacity: 200 unique fingerprints
• Wake up on Finger function
• Anti-scratch surface
• Verification: 1:1; Identification: 1:N
• 4 mounting holes
• 2 JST SH connectors
• Window: 16.9 x 12.9 mm
• Effective sensor area: 14 x 12.5 mm

Resources for the SparkFun fingerprint scanner

Learn more about your new GT-521F32 TTL biometric fingerprint scanner: follow the links below!

• Hookup guide
• Datasheet
• Programming guide (en)
• SDK demo software (en)