RAKwireless IO Module RAK13002 WisBlock Adapter

Align the RAK13002's 32-pin connector with the corresponding socket on your WisBlock Base board that already holds the Core module. Gently press down until the board seats fully, ensuring the mechanical key matches. No soldering is required; the connection is made via the board-to-board headers. Always power off the base board before installing or removing the module to prevent short circuits or GPIO contention.

The super capacitor provides backup power specifically to the Real-Time Clock (RTC) circuit of the WisBlock Core module (e.g., RAK4631, RAK3172). In the event of a main power or battery failure, it can keep the RTC running for up to seven days, preserving accurate timestamp data. This is essential for applications like environmental loggers that require precise timekeeping between sampling intervals, even during intermittent power loss.

Yes, the two I2C interfaces are electrically independent, allowing you to connect multiple sensors or devices on separate buses. This is useful if you have address conflicts (e.g., two sensors with the same fixed I2C address) or want to isolate noisy peripherals from sensitive ones. You will need to configure your firmware (using Arduino, PlatformIO, or ESP-IDF) to initialize and use the specific GPIO pins assigned to each I2C interface on the WisBlock Core.

The 3.3V power rail on the RAK13002 is sourced directly from the WisBlock Base board's regulator, which is typically rated for a total current output shared across all modules. Consult your specific Base board datasheet (e.g., RAK5005-O) for the regulator's current limit, often around 500mA to 1A. The current available for your peripherals is this total minus what is consumed by the Core and other installed modules. For power-hungry devices, consider an external regulated supply.