STMicroelectronics X-NUCLEO-IKS01A2

Overview

X-NUCLEO-IKS01A2 from STMicroelectronics is an Arduino UNO R3–compatible motion and environmental sensor expansion board for STM32 Nucleo development platforms, integrating LSM6DSL (3D accelerometer ±2/±4/±8/±16 g & 3D gyroscope ±125–±2000 dps), LSM303AGR (3D accelerometer/magnetometer), LPS22HB (260–1260 hPa barometer), and HTS221 (capacitive RH/temp sensor).

For engineers reviewing the X-NUCLEO-IKS01A2 datasheet, X-NUCLEO-IKS01A2 pinout, X-NUCLEO-IKS01A2 application, or X-NUCLEO-IKS01A2 equivalent, this board supports rapid prototyping of sensor fusion, context-aware IoT edge nodes, and industrial condition monitoring with I²C-based sensor hub capability and STM32Cube firmware compatibility.

Technical Context

The board implements a multi-sensor architecture where LSM6DSL serves as primary inertial measurement unit with embedded I²C sensor hub functionality, enabling daisy-chained communication with LSM303AGR, LPS22HB, and HTS221 without MCU intervention. All sensors share a common I²C bus routed through configurable jumpers.

It features DIL24 socket expansion for adding third-party MEMS adapters, and hardware-level I²C port remapping via solder bridges to support alternate STM32 Nucleo pin assignments. Power is supplied via Arduino connector (5 V) or ST morpho headers (3.3 V), with on-board voltage translation for mixed-voltage I²C operation.

Key Specifications

Availability

X-NUCLEO-IKS01A2 is available at Aetrix Electronics and suitable for industrial predictive maintenance, wearable health monitors, smart building environmental sensing, and educational robotics requiring stable component supply and long-term design-in support.

Supply support for X-NUCLEO-IKS01A2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and analog components for industrial, automotive, and consumer applications.

This board belongs to ST's X-NUCLEO sensor expansion series, engineered specifically to accelerate STM32-based prototyping with plug-and-play environmental and motion sensing capabilities and full STM32Cube ecosystem integration.

FAQ

Does X-NUCLEO-IKS01A2 require external power regulation?

No - it accepts 5 V from Arduino connectors or 3.3 V from ST Morpho headers, with on-board regulators and level shifters ensuring proper voltage domains for all sensors and I²C signaling. No external regulator or LDO is needed for standard operation with compatible Nucleo boards.

Can the LSM6DSL sensor hub route data from all onboard sensors simultaneously?

Yes - the LSM6DSL's embedded I²C master mode allows it to autonomously read from LSM303AGR, LPS22HB, and HTS221 over shared I²C, reducing MCU polling overhead. Configuration is done via registers accessible through STM32Cube drivers.

Is Arduino IDE support native or limited to STM32CubeMX workflows?

Native Arduino IDE support is not provided - the board is designed for STM32Cube ecosystem use, including CubeMX configuration, HAL libraries, and prebuilt examples in Keil, IAR, and GCC toolchains. Arduino compatibility refers only to mechanical and pinout alignment.

What is the role of the DIL24 socket on the board?

The DIL24 socket enables hardware expansion with third-party MEMS adapter boards (e.g., ultrasonic, gas, or acoustic sensors), providing direct access to I²C, power, and ground pins. It does not include signal routing logic - users must manage address conflicts and timing externally.