This project presents a biometric-based blood group identification system using a Raspberry Pi Zero 2W and an R307 fingerprint sensor. The system links registered fingerprints with corresponding blood group information stored in a database. When a user places their finger on the sensor, the system verifies the fingerprint and displays the associated blood group on an LCD via I2C communication. If an unregistered or incorrect fingerprint is detected, a buzzer alert is activated. The system also includes a web-based interface for fingerprint registration and blood group data management over Wi-Fi. This solution can be used in emergency medical situations for quick identification of blood groups.  

The objectives of the project include:

• To interface R307 fingerprint module with Raspberry Pi.
• To store fingerprint templates with corresponding blood groups.
• To display blood group information on LCD using I2C.
• To generate buzzer alert for wrong fingerprint detection.
• To develop a web page for registration and database management.
• To enable Wi-Fi-based remote access.

    The major building blocks of this project are:  

• Regulated power supply.
• Raspberry pi zero 2w.
• Fingerprint module.
• LCD display.
• Buzzer.
• SD card.

  Software’s used:  

• Raspbian OS.
• WEB technology.
• Express SCH for Circuit design.

     

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