UM0704
System operation
Doc ID 15731 Rev 1
9/18
For a simultaneous tilt in both the X- and Y-axis, the combined effect is shown in the outer
and inner LED circles of the board.
Note:
The angles shown above are only for reference, these do not refer to the actual angle of
inclination of the board in any axis.
Note:
Tilt on the X- and Y-axis of the board is mentioned in the PCB of the board as the Roll and
Pitch respectively. These do not refer to the pitch and roll of the gyroscope but are used just
for this board
2.2.2 Inclination mode with sound
This mode also measures the tilt of the board in the X-axis and the Y-axis and displays this
information on the LED circles. But in this mode, according to the motion, a sound is also
produced using the buzzer. The frequency of the sound is related to the inclination/tilt of the
board. The higher the inclination; the higher the beep sound frequency generated.
Beep sound frequencies for tilt in the Y-axis are kept higher than beep sound frequencies for
tilt in the X-axis. This is done to distinguish the two motions also by the sound produced.
Note:
For simultaneous angular movement in both the X- and Y-axis, the combined effect is shown
in the outer and inner LED circles of the board, so, accordingly, the sound produced has the
combined effect.
Note:
To know more about the inclination measurement and display please see
.
2.2.3 Circular
mode
In this system mode the circumference of the board is divided into 12 directions and each
LED on the outer circle denotes one such direction. Now, if the Z-axis of the board detects a
tilt in any of these directions, then the corresponding LED on the outer circle and an
opposite LED on the inner circle glows. The LEDs continue to glow until the board is inclined
in that direction. Now, if the tilt direction is changed then the LEDs corresponding to that tilt
start glowing.
This system mode is extended to show the circular motion of the board. To produce the
circular motion of the board the user should follow the following steps:
●
Hold the board in one palm with the XY plane of the board parallel to the palm
●
Hold the hand in such a way that the back of the palm is facing the ground plane
●
Now keeping the Z-plane of the hand fixed, revolve the hand in the XY plane (see
)
The LEDs on the boards follow the revolution of the board. If the revolution speed is high
then it provides a very good visual effect of the rotating LEDs responding to the board
revolution.
2.2.4
Circular mode with sound
This mode is similar to the circular mode described earlier in
. But in this mode
a buzzer sounds according to the motion of the board. Each of the 12 directions of the board
is assigned a buzzer frequency, therefore producing a rhythmic sound effect with the circular
motion of the board.
www.BDTIC.com/ST
