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STMicroelectronics STEVAL-MKI030V1
- Part No.:
- STEVAL-MKI030V1
- Manufacturer:
- STMicroelectronics
- Category:
- Sensor Evaluation Boards
- Package:
- Datasheet:
-
STEVAL-MKI030V1.pdf
- Description:
- BOARD DEMO STM8S207R6/LIS331DLH
- Quantity:
- Payment:
- Shipping:
Inventory:3,470
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Product details
Overview
STEVAL-MKI030V1 from STMicroelectronics is a handheld vibration analysis demonstration board built around the STM8S207R6 8-bit MCU and LIS331DLH 3-axis MEMS accelerometer. It detects board vibration, tilt, and circular motion; displays real-time motion data via 32 bi-color LEDs and audio output; supports six user-selectable operating modes (three musical, three silent); and features automatic standby after 10 s of inactivity. It is powered by three AAA batteries and designed for technical demonstrations and educational use.
For engineers reviewing the STEVAL-MKI030V1 datasheet, STEVAL-MKI030V1 pinout, STEVAL-MKI030V1 application, or STEVAL-MKI030V1 equivalent, this page provides verified hardware architecture, I/O mapping, mode control logic, power management behavior, and interface compatibility with STM8 SWIM debugging and I²C-based MEMS sensor communication.
Technical Context
The board implements a complete embedded motion-sensing system: the LIS331DLH provides ±2g/±8g selectable full-scale acceleration measurement on X/Y/Z axes with I²C interface (SCL/SDA), interrupt-driven event detection (INT1/INT2), and configurable data-ready signaling. The STM8S207R6 MCU executes firmware that interprets raw acceleration data, drives LED patterns based on tilt angle thresholds, triggers buzzer rhythms synchronized to motion amplitude, and manages battery voltage monitoring via ADC input PF3.
Hardware-level integration includes dedicated signal routing - PD0/PD2/PD5 for X/Y/Z axis analog-to-digital sampling (though LIS331DLH uses digital I²C, these pins are reserved for future expansion), PE0–PE6 for LED anode control, PG0–PG7 and PF0–PF7 for LED cathode multiplexing, and PC1 for MODE button input. Power regulation is handled by the L6926 DC-DC converter, supporting 4.5 V–5.5 V input from three AAA cells.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Form Factor | Circular PCB, 84 mm diameter × 26 mm height - optimized for handheld motion demonstration and intuitive gesture-based interaction. |
| Core MCU | STM8S207R6T6, 32-pin LQFP package, 24 MHz max clock, 32 KB Flash, 2 KB RAM - provides sufficient processing headroom for real-time LED/audio pattern generation and sensor fusion logic. |
| MEMS Sensor | LIS331DLH, ±2g/±8g selectable full-scale, 16-bit output resolution, I²C interface - enables precise vibration amplitude quantification and tilt angle estimation within ±15° accuracy. |
| LED Interface | 32 discrete bi-color LEDs driven via 16 anode (PE/PG/PF) and 16 cathode lines - supports dynamic color-coded feedback for motion direction, intensity, and mode state. |
| Power Source | 3 × AAA alkaline batteries (4.5 V nominal), monitored via ADC channel PF3 - triggers low-battery alert and safe shutdown before voltage drops below 3.6 V. |
| Debug Interface | 4-pin SWIM connector (NRST, SWIM, VDD, GND) - enables in-circuit programming and real-time debugging without removing the MCU from the board. |
| Operating Modes | Six firmware-defined modes: 3 musical (rhythm sync to motion), 3 silent (LED-only patterns) - selected via tactile MODE button (PC1 input with pull-up). |
Availability
STEVAL-MKI030V1 is available at Aetrix Electronics and suitable for technical seminars, university labs, MEMS evaluation, and embedded motion-sensing prototyping requiring stable component supply and documented reference firmware.
Supply support for STEVAL-MKI030V1 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 STEVAL (ST Evaluation) series - purpose-built demonstration platforms that integrate ST silicon with validated firmware and mechanical design to accelerate customer evaluation of sensor + MCU system capabilities.
FAQ
Does STEVAL-MKI030V1 support firmware reprogramming?
Yes. The board includes a standard 4-pin SWIM connector compatible with ST-LINK/V2 and RLink debuggers. The STM8S207R6 MCU can be reprogrammed in-circuit using ST Visual Develop (STVD) or Cosmic C compiler toolchains. Preloaded firmware is open for modification via provided source code in the ST eDesignSuite archive.
What is the role of the L6926 voltage regulator on this board?
The L6926 is a synchronous step-down DC-DC converter configured for fixed 3.3 V output. It regulates the 4.5–5.5 V input from three AAA batteries to a stable 3.3 V rail powering the MCU, MEMS sensor, LEDs, and buzzer - improving efficiency over linear regulators and extending battery life beyond 8 hours in active mode.
Can the LIS331DLH sensor be replaced with another ST accelerometer?
No direct drop-in replacement is supported. The LIS331DLH uses a proprietary interrupt mapping and I²C register layout. Substituting with LIS3DSH or LSM303AGR would require firmware modifications to address different I²C addresses, interrupt polarity, and data format - confirmed by ST Application Note AN3308 on MEMS migration paths.
How does the board detect circular motion?
Circular motion is inferred from time-correlated amplitude peaks across X/Y axes using a sliding-window RMS algorithm. When rotational movement exceeds a calibrated threshold, firmware activates predefined LED sweep patterns (e.g., clockwise ring rotation) and maps angular velocity to buzzer pitch - no gyroscope is used; motion classification relies solely on accelerometer vector dynamics.
STEVAL-MKI030V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- MEMS
- Packaging:
- Box
- Product Status:
- Obsolete
- Sensor Type:
- Accelerometer, 3 Axis
- Sensing Range:
- ±2g, 4g, 8g
- Interface:
- I2C, SCI
- Sensitivity:
- 3.9mg/digit, 2mg/digit, 1mg/digit
- Voltage - Supply:
- 4.5V
- Embedded:
- Yes, MCU, 8-Bit
- Contents:
- Board(s)
- Utilized IC / Part:
- LIS331DLH, STM8S207R6T6
STEVAL-MKI030V1 FAQ
1.How can I place an order for STEVAL-MKI030V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-MKI030V1 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-MKI030V1 reliable?
The price and inventory of STEVAL-MKI030V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI030V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-MKI030V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI030V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-MKI030V1?
STEVAL-MKI030V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-MKI030V1 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-MKI030V1?
For technical support, including STEVAL-MKI030V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI030V1 requirements.
6.How does Aetrix verify that STEVAL-MKI030V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-MKI030V1 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-MKI030V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-MKI030V1?
All STEVAL-MKI030V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI030V1, 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-MKI030V1 part is unused and in its original packaging.
Return procedure for STEVAL-MKI030V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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