WisBlock HAT for Raspberry Pi

Product Summary

What is WisBlock HAT for Raspberry Pi RAK6421?

Editorial narrative

What is WisBlock HAT for Raspberry Pi RAK6421? RAK6421 is a powerful Raspberry Pi HAT that lets you connect WisBlock modules directly to any Pi (Pi 4, Pi 5, or Pi Zero 2W). Whether you're building a Meshtastic router , a sensor gateway , or a LoRa test platform , RAK6421 makes it easy to integrate LoRa radios, GPS, environmental sensors, and more, all in a modular, plug-and-play way. The RAK6421 is compatible with the HAT+ specification by using an independent EEPROM for metadata and device tree information RAK6421 is also compatible with our RAK7391 WisGate Connect and our RAKR314 CM4 carrier board, both based on CM4. Why You Need WisBlock HAT for Raspberry Pi RAK6421 Turn your Raspberry Pi into a powerful IoT hub with the RAK6421 WisBlock Adapter. It lets you plug in pretty much any WisBlock sensor or interface module , from LoRa radios to GPS and environmental sensors, directly onto your Pi . No extra baseboard needed. Perfect for rapid prototyping, smart monitoring, or building a compact Meshtastic node. Why it's useful: Connect WisBlock modules instantly – No need for a separate WisBlock baseboard Supports sensors, radios, and GPS – Easily build LoRa or sensor-based applications A Great IoT and Meshtastic Pi HAT – Ideal for long-range communication and logging Compact and plug-and-play – Clean setup, fast integration, no soldering required Key Features of RAK6421 WisBlock Pi HAT for Raspberry Pi Standard 40-pin Raspberry Pi Header 2 WisBlock IO slots + 4 WisBlock Sensor slots Supports LoRa radios, I2C sensors, GPS, I2S audio Built-in I²C ADC for analog input (e.g., temperature, light) Powers modules via 3.3V and VBAT from Pi’s 5V rail Compatible with RAK13300 and RAK13302 LoRa radios Add-on options: Raspberry Pi, enclosure , and sensor bundles On-board EEPROM connected to ID_SA and ID_SC signals Key Benefits of WisBlock HAT for Raspberry Pi RAK6421 RAK6421 key benefits are: Simplifies hardware assembly: no extra adapters, no flying cables Allows to use differen

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• Last verified: 2026-06-01