STMicroelectronics STEVAL-MKI114V1

Overview

STEVAL-MKI114V1 from STMicroelectronics is a magnetic field probe evaluation kit built around the LSM303DLHC 3-axis magnetometer and 3-axis accelerometer combo sensor. It features a slim probe form factor, DIL-24 socket for full pin access, flat-cable interface to STEVAL-MKI109V1/V2 MEMS motherboards, and RoHS-compliant construction. Designed for PCB-level magnetic disturbance localization and compass calibration verification.

For engineers reviewing the STEVAL-MKI114V1 datasheet, STEVAL-MKI114V1 pinout, STEVAL-MKI114V1 application, or STEVAL-MKI114V1 equivalent, this kit enables rapid characterization of magnetic field gradients, sensor orientation accuracy, and interference mapping in embedded navigation and EMI debug workflows.

Technical Context

The STEVAL-MKI114V1 implements a passive probe architecture with the LSM303DLHC mounted directly on a thin, rigid PCB probe tip. Signal routing preserves I²C (SDA/SCL), two interrupt outputs (INT1/INT2), and dual supply rails (VDD, Vdd_IO) via a standardized 10-pin flat cable to compatible ST MEMS motherboards.

It relies entirely on host-side firmware and the Unico GUI software for data acquisition, real-time magnetic vector display, and sensitivity calibration - no onboard MCU or firmware. The probe's mechanical design enables precise spatial scanning of magnetic fields across PCB traces, components, and enclosures.

Key Specifications

Availability

STEVAL-MKI114V1 is available at Aetrix Electronics and suitable for PCB EMI diagnostics, embedded compass validation, and magnetic field gradient analysis requiring stable component supply and legacy ST MEMS platform compatibility.

Supply support for STEVAL-MKI114V1 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, specializing in microcontrollers, sensors, power ICs, and automotive-grade silicon.

The STEVAL-MKI114V1 belongs to ST's MEMS demonstration kit product line, engineered specifically to accelerate development and debug of magnetic sensing applications in consumer electronics, industrial equipment, and navigation subsystems.

FAQ

Does STEVAL-MKI114V1 include an onboard microcontroller or firmware?

No. The STEVAL-MKI114V1 is a passive sensor probe board with no embedded processor or flash memory. All configuration, data readout, and calibration are handled externally by the connected STEVAL-MKI109V1/V2 motherboard and Unico GUI software running on a Windows PC.

Can STEVAL-MKI114V1 operate independently without STEVAL-MKI109V1/V2?

No. It lacks power regulation, USB interface, and host communication circuitry. It requires connection via flat cable to either STEVAL-MKI109V1 or STEVAL-MKI109V2 to receive power, clock, and I²C commands - no standalone operation is supported.

What magnetic field resolution does the probe achieve in practice?

Based on the LSM303DLHC's native 16-bit magnetometer output and typical noise floor, the probe delivers ~0.1 mGauss RMS resolution under stable conditions. Actual resolution depends on host sampling rate, averaging settings in Unico GUI, and local EMI environment.

Is the DIL-24 socket wired to all LSM303DLHC pins, including SETP/SETC and RES?

Yes. The schematic confirms full pinout breakout: pins 1–14 of the DIL-24 socket map directly to LSM303DLHC VDD, Vdd_IO, SDA, SCL, INT1, INT2, SETC, SETP, and four RES pins - enabling hardware-level sensor configuration and test point access.