The RAK12002 is a WisBlock Real-Time Clock module built around the Micro Crystal RV-3028-C7. It keeps accurate date and time even when your WisBlock loses power, then syncs the correct time back to your WisBlock Core once power is restored. Key Benefits ⏱️ Keeps Time Through Power Loss. A super capacitor backup keeps the RTC running when main power drops, so your project doesn't lose track of time on reboot or battery swap. 🔋 Ultra-Low Power Draw. Just 40 nA of current consumption, which makes it a clean fit for low-power, battery-backed Meshtastic and MeshCore solar nodes. ⚙️ Simple Integration. Plugs into any WisBlock sensor slot on a WisBlock Base board. Secures with a supplied screw. 📡Great GPS alternative One of the benefits of GPS modules is accurate timekeeping, but they draw a lot of power. This RTC is a great low-power solution for having accurate message timestamps. Note: backup runtime from the super capacitor is measured in hours, not years like a coin-cell-backed RTC. This module is designed to ride out short power interruptions and reboots, not long-term storage off-grid. Specifications RTC Chip Micro Crystal RV-3028-C7 Oscillator Built-in 32.768 kHz crystal Interface I2C Power Supply 3.3V Current Consumption 40 nA Backup Power Super capacitor (onboard) Counters Seconds, minutes, hours, date, month, year, weekday Other Features Automatic leap year correction, programmable clock output Connector WisBlock 24-pin male Dimensions 10 mm x 10 mm Manufacturer RAK Wireless Compatibility Drops into any IO slot on a WisBlock Base board Works with all WisBlock Core modules (RAK4631, RAK11200, RAK11310, and others) Common pairings: WisBlock Base + Core + RAK12002 for any project that needs accurate timestamps independent of GPS or a network connection
