YoPicoTime Shield

Why Choose YoPicoTime Shield?

🛡️

Anti-Manipulation Protection

Prevent users from manipulating device time to bypass app restrictions. Hardware-based timestamp verification ensures authenticity.

📱

Flutter Integration Ready

Seamlessly integrate with your Flutter applications via USB serial communication. Perfect for offline-first applications.

⚡

Ultra-Low Power

Raspberry Pi Pico with DS3231 RTC consumes minimal power while providing accurate timekeeping even when main device is off.

🔧

Easy Implementation

Simple wiring, MicroPython code, and comprehensive documentation make setup straightforward for developers of all levels.

💾

Offline-First Design

No internet dependency. Perfect for applications that need to work in remote areas or maintain functionality during network outages.

🔒

Tamper-Resistant

Hardware-based solution with optional digital signatures and checksums for enterprise-grade security requirements.

Technical Specifications

Microcontroller: Raspberry Pi Pico (RP2040)
RTC Module: DS3231 with battery backup
Communication: USB Serial (CDC)
Programming: MicroPython
Power: 3.3V, <5mA operation
Accuracy: ±2ppm (±63 seconds/year)
Supported Platforms: Android, iOS, Windows, Linux

Compatible with any device that supports USB serial communication. Perfect for Flutter applications requiring secure timestamp verification.

🔌 Wiring Configuration

DS3231     ↔️     Raspberry Pi Pico
--------------------------------
VCC        →     3.3V (pin 36)
GND        →     GND (pin 38)  
SDA        →     GP0 (pin 1)
SCL        →     GP1 (pin 2)

📡 Serial Communication:
Flutter → "yo_minta_jam"
Pico   → "2025-07-08T13:14:30Z"