The RAK12002 is a WisBlock RealTime Clock (RTC) module built on the Micro Crystal RV3028C7. It includes an integrated supercapacitorbased backup power supply, allowing the module to maintain accurate date and time even during a complete loss of external power. Once the RTC has been configured with the correct date and time, it continues to track time independently.

When system power is restored, the WisBlock Core can retrieve the current date and time directly from the RAK12002, ensuring consistent timekeeping across power cycles.

Product Features

• Built-in 32.768KHz crystal oscillator
• Counters for seconds, minutes, hours, date, month, year and weekday
• Automatic leap year correction
• 3.3V Power supply
• I2C Interface
• Programmable Clock output
• Extreme low current consumption 40nA
• Supper capacitor backup power supply
• small size:10mmx10mm

Documentation

• RAK12002 Quick Start Guide
• Datasheet
• WisBlock Quick Start Guide
• WisBlock Source Code Repository(opens new window)
• RAK12002 3D Model(opens new window)
• 24-Pin Male Connector 3D File(opens new window)
• WisBlock Sensor Tutorial

Examples:

For All WisBlock Core Modules:

• Sample Code: WisBlock RTC module

Tutorials

• WisBlock Starter Kit and RAK Edge Gateway Complete LoRaWAN Guide
• Installation of Board Support Package in Arduino IDE
• The Icing on the Cake: A Template to Innovate Custom IoT Applications with RAKwireless and Datacake
• RAK12002 A Real-Time Clock module that can help you map your terrain

Check

Hackster Projects

Articles

• Choosing Between WisBlock Modules For Your Next IoT Project? Take A Quiz!
• Why We Make WisBlock: The Story Behind RAKs Modular IoT Platform
• Build your IoT Breakthroughs Fast with the WisBlock System!
• RAKwireless Announces Partnership with One Planet Education Network (OPEN) to Launch STEM IoT Sensor Kits for Schools Worldwide
• RAKwireless Launches New Modular Product Series – WisBlock
• New WisBlock Modules in RAK Autumn Launch

WisBlock Success Stories

• Enology + IoT = Great Wine A winery modernization by Enotek
• Saving the Wetlands with a Solution from The Group Lab