——WT_0213
Design Concept
Tired of worrying about privacy when storing personal items?
This fingerprint-activated security box solves it!
Using biometric authentication, only authorized users can unlock it—perfect for safeguarding kids’ treasures like secret notes or stickers.
Why Fingerprint?
- Unique Identification: Eliminates traditional lock complexity.
- Instant Access: Kids love the futuristic “magic touch” to open their private space.
Hardware Setup
Core Components
Main Controller: Ai-M61-32SU development board (coordinates fingerprint
recognition and servo control).
Fingerprint Module: FPM383C for instant biometric scanning.
Lock Mechanism: 9g servo motor (compact, reliable torque for precise latch
control).
Prototyping Challenges
Planned a 3D-printed enclosure but improvised with a sturdyshoebox (flexible, eco-friendly, and surprisingly stylish!).
How It Works
Authentication: Place a registered finger on the FPM383C module.
✅ Green LED: Unlock successful → Servo opens the latch.
❌ Red LED: Unauthorized access → Servo locks immediately.
Wiring Guide
Code Snippet
#include "FPM383C.h"
#include "bflb_servo.h"
#include "bflb_gpio.h"
void main() {
// Initialize fingerprint module & servo
FPM383C_Init();
servo_init();
while(1) {
// Check fingerprint match
if (FPM383C_Verify()) {
servo_unlock(); // Rotate servo to open
set_led(GREEN);
} else {
servo_lock();
// Rotate servo to close
set_led(RED);
}
}
}3D Model (FreeCAD Design)
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