Data brief
For further information contact your local STMicroelectronics sales office.
June 2009 Doc ID 15631 Rev 2 1/4
4
STEVAL-MKI029V1
Inclination analysis demonstration board
based on the STM8S207R6 MCU and LIS331DLH MEMS
Features
■ Detects and provides visual/audio
representation of:
– tilt on X axis
– tilt on Y axis
– circular motion of the board
– free-fall of the board
■ Displays motion information using multi-
colored LEDs or music/rhythm patterns
■ Provides six different operating modes
■ Offers a standby function for low power
consumption
■ Monitors the 3 AAA batteries and displays their
status on the LEDs
■ Provides additional MCU I/Os for future
extensions
■ Equipped with a SWIM connector for
debugging capability
■ Compliant with RoHS directives
Description
The STEVAL-MKI029V1 inclination analysis
board is a handheld demonstration board which
detects the tilt on X-axis and tilt on Y-axis. The
visual representation of this information is done
using colored LEDs placed in two circles.
The system can detect the free-fall of the board
and display the information for this event on the
bi-color LED at the center of the board.
The system can also be configured to detect the
circular motion of the board, in which LED
patterns are generated depending on board
movement.
The STEVAL-MKI029V1 also features a
demonstration mode. In this mode, different LED
patterns are displayed irrespective of the
position/motion of the board, making the system
suitable for exhibitions and seminars.
There are three musical modes in which
music/rhythm is played based on the
mode/motion of the board. There are also three
silent modes, for a total of six different modes of
operation.
The STEVAL-MKI029V1 can be switched from
one mode to another by pressing the on-board
MODE button. To reduce power consumption, the
system automatically enters standby mode when
there is no motion for more than 10 seconds. The
system “wakes up” from standby when a
vibration/motion is detected. The STEVAL-
MKI029V1 also monitors the batteries, and allows
the user to check their status at any time. When
low battery is detected, the system alerts the user
and enters into no operation to avoid the system
malfunction.
The board is equipped with free MCU I/Os for the
external interface, and a SWIM connector is
included to provide in-circuit debugging capability.
The system can be powered using 3 AAA
batteries of 1.5 V each. The board is of circular
shape, with a diameter of 84 mm and a height of
26 mm.
The board is RoHS compliant.
STEVAL-MKI029V1
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