Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Development Boards, Kits, Programmers > Evaluation Boards > Sensor Evaluation Boards

STMicroelectronics STEVAL-MKI031V1

Name: STEVAL-MKI031V1
Brand: STMicroelectronics
SKU: STEVAL-MKI031V1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STEVAL-MKI031V1

Manufacturer:: STMicroelectronics

Category:: Sensor Evaluation Boards

Package:

Datasheet:: STEVAL-MKI031V1.pdf

Description:: PLATFORM MUSA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,903

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STEVAL-MKI031V1 from STMicroelectronics is a multi-sensor application (MuSA) evaluation platform built around an ST7 8-bit microcontroller, pre-installed with the LIS331DLH digital-output MEMS accelerometer, and supporting SPI- or analog-connected ST accelerometers in 3×3 mm or 3×5 mm packages. It features a 128×64-pixel monochrome LCD, four navigation buttons, microSD socket for data logging, piezoelectric buzzer, mini-USB interface for host communication and DFU firmware updates, and a rechargeable Li-ion battery delivering ~7 hours of operation.

For engineers reviewing the STEVAL-MKI031V1 datasheet, STEVAL-MKI031V1 pinout, STEVAL-MKI031V1 application, or STEVAL-MKI031V1 equivalent, this board serves as a ready-to-use development environment for rapid prototyping of motion-sensing applications including tilt detection, impact monitoring, and activity classification using ST's MEMS sensor portfolio.

Technical Context

The platform integrates an ST7 microcontroller as the central signal processor, managing real-time acquisition, preprocessing, and display of accelerometer data via SPI or analog interfaces. It supports both digital (LIS331DLH, LIS3DH-compatible) and analog (LIS344ALH) ST accelerometers through dedicated routing and configurable I/O.

Power architecture includes dual-source operation: USB-supplied 5 V (VBUS) and internal 3.7 V Li-ion battery, regulated to 3.3 V (VDD) via on-board LDO (6REG), with automatic source selection and battery charging circuitry. The DFU mode enables in-field firmware updates without external programmers.

Key Specifications

Parameter	Value and Actual Design Meaning
Core MCU	ST7 8-bit microcontroller - handles sensor data acquisition, menu logic, LCD control, and USB/DFU protocol stack.
Pre-installed Sensor	LIS331DLH 3-axis digital accelerometer - provides ±2g/±4g/±8g selectable full-scale range via SPI register configuration.
Display	128 × 64 pixel monochrome LCD - driven directly by ST7 GPIOs and used for real-time sensor output visualization and menu navigation.
Storage Interface	MicroSD socket - enables autonomous data logging of raw or processed acceleration samples for offline analysis.
Battery Runtime	~7 hours on 3.7 V Li-ion cell - sufficient for extended field testing and classroom demonstrations without USB tethering.
USB Functionality	Mini-USB connector supports CDC-class virtual COM port for PC communication and DFU mode for firmware reprogramming.
Expansion Support	Multi-pole connector - allows mechanical and electrical integration of additional ST sensor modules (e.g., gyroscope, magnetometer) via standardized pinout.

Availability

STEVAL-MKI031V1 is available at Aetrix Electronics and suitable for motion-sensing prototyping, MEMS sensor education labs, and industrial vibration monitoring proof-of-concept development requiring stable component supply and documented reference hardware.

Supply support for STEVAL-MKI031V1 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/mixed-signal devices for industrial, automotive, and consumer markets.

The STEVAL-MKI031V1 belongs to ST's STEVAL (ST Evaluation) board family, developed specifically to accelerate customer adoption of ST MEMS motion sensors by providing validated hardware, firmware examples, and interoperable expansion capability.

FAQ

Is STEVAL-MKI031V1 still in active production?

No - STEVAL-MKI031V1 is marked Obsolete in ST's official documentation (Doc ID 17628 Rev 1, September 2010). It remains available through authorized distributors and Aetrix Electronics for legacy design support, educational use, and spare-part replacement, but no new silicon revisions or firmware updates are planned.

Which accelerometers are compatible with the MuSA platform?

The board natively supports the LIS331DLH and can accommodate other ST digital-output accelerometers in 3×3 mm or 3×5 mm packages (e.g., LIS3DH, LIS3DSH) via SPI, plus the analog-output LIS344ALH. Compatibility requires matching pinout, voltage levels, and firmware adaptation for register mapping or ADC scaling.

Can the LCD be replaced or upgraded?

No - the 128×64 monochrome LCD is soldered directly to the board with fixed ST7 GPIO connections and no header or flex interface. Replacement requires desoldering and matching timing/control signals; no alternate display interface (e.g., SPI OLED) is supported by default hardware or firmware.

Does STEVAL-MKI031V1 support I²C communication?

No - the board uses only SPI for sensor communication (MOSI, MISO, SCK, CS) and UART-over-USB for host interaction. The ST7 MCU does not expose I²C hardware on accessible pins per the schematic, and no I²C pull-up resistors or routing are implemented for accelerometer or peripheral interfaces.

STEVAL-MKI031V1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: MEMS, nano

Packaging:: Bulk

Product Status:: Obsolete

Sensor Type:: Accelerometer, 3 Axis

Sensing Range:: ±2g, 4g, 8g

Interface:: USB

Sensitivity:: 3.9mg/digit, 2mg/digit, 1mg/digit

Voltage - Supply:: -

Embedded:: Yes, MCU, 8-Bit

Contents:: Board(s)

Utilized IC / Part:: LIS331DLH

STEVAL-MKI031V1 FAQ

1.How can I place an order for STEVAL-MKI031V1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-MKI031V1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STEVAL-MKI031V1 reliable?

The price and inventory of STEVAL-MKI031V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI031V1 is usually 5 days.

3.What payment methods are accepted for STEVAL-MKI031V1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI031V1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-MKI031V1?

STEVAL-MKI031V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-MKI031V1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STEVAL-MKI031V1?

For technical support, including STEVAL-MKI031V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI031V1 requirements.

6.How does Aetrix verify that STEVAL-MKI031V1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-MKI031V1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STEVAL-MKI031V1 meets industry standards.

7.What is the process for return or replacement of STEVAL-MKI031V1?

All STEVAL-MKI031V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI031V1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STEVAL-MKI031V1 part is unused and in its original packaging.

Return procedure for STEVAL-MKI031V1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…