The RAK19003 WisBlock Base Board is the core platform of the WisBlock system, designed to carry the WisBlock Core MCU and two additional WisBlock modules via its 24‑pin WisConnector. It provides a low‑effort path for building prototypes, testing a variety of sensors, and developing IoT applications. With all WisBlock modules built to industrial standards, projects can move from prototype to mass production without redesign. The board supports multiple power sources, including 5V USB, 3.7V LiPo batteries, and 5V solar panels, offering flexibility for different deployment scenarios. It also supports low‑power applications through the ability to control the power supply to WisBlock Sensor modules. Measuring only 30 × 35 mm, the RAK19003 enables compact IoT designs suitable for small housings and space‑constrained installations. Product Features Easy Plug'n'Play slots for WisBlock Core MCU, small WisBlock Sensor, WisBlock Extra, small WisBlock Storage and WisBlock Power modules Small form factor Supports 3 different power supply sources Optimized for low power consumption applications I2C, UART, GPIO's an analog input accessible with solder contacts 2 user-definable LED's Reset button USB Type C debug port 1 slot for WisBlock Core MCU 2 slots for modules with 24pin WisConnector Package Inclusion 1pc RAK19003 1pc USB type C cable 1set screws (kit) Documentation RAK19003 Quick Start Guide Datasheet WisBlock Quick Start Guide WisBlock Source Code Repository(opens new window) RAK19003 3D Model(opens new window) 24-Pin Female Connector 3D File (Sensor Slot)(opens new window) 40-Pin Female Connector 3D File (Core Slot) 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 How to Create Custom WisBlock Sensor or WisBlock IO Module Check Hackster Projects Articles Choosing Between WisBlock Modules For Your Next IoT Project? Take A Quiz! Why We Make WisBlock: The Story Behind RAK’s 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