LEGO Mindstorms EV3 User Manual - Page 13

Browse online or download pdf User Manual for Educational Equipment LEGO Mindstorms EV3. LEGO Mindstorms EV3 36 pages.
Also for LEGO Mindstorms EV3: Instructions (5 pages)

Print Page
LEGO Mindstorms EV3 User Manual
EV3 TECHNOLOGY
EV3 Sensors

Gyro Sensor

The Gyro Sensor is a digital sensor that detects rotational motion
on a single axis. If you rotate the Gyro Sensor in the direction
of the arrows on the case of the sensor, the sensor can detect
the rate of rotation in degrees per second. (The sensor can measure
a maximum rate of spin of 440 degrees per second.) You can then
use the rotation rate to detect, for example, when a part of your
robot is turning, or when your robot is falling over.
In addition, the Gyro Sensor keeps track of the total rotation angle
in degrees. You can use this rotation angle to detect, for example,
how far your robot has turned. This feature means you are able to
program turns (on the axis the Gyro Sensor is measuring) with an
accuracy of +/- 3 degrees for a 90-degree turn.
Note: The sensor must be completely motionless while being plugged
into the EV3 Brick. If the Gyro Sensor is attached to a robot, the robot
should be held motionless in its starting position as the Gyro Sensor
is plugged into the EV3 Brick.
CONNECTING THE GYRO SENSOR
On the EV3 Brick, go to the Brick App screen (third tab) and use
the Center button to select Port View.
Using a flat black Connector Cable, connect the Gyro Sensor to
the EV3 Brick on Port 2. Make sure to hold the sensor very still while
you do this. On the EV3 Brick display, the Port View app should show
a "0" reading in the second small bottom window from the left, which
is the window representing input values from Port 2.
Still without moving the sensor, observe the display for a few
seconds. It should continue to display "0" for Port 2 with the Gyro
Sensor. In case the Gyro Sensor readings do not constantly display
"0" during the connection process, unplug the sensor and repeat
the procedure.
When the screen consistently displays "0" for a few seconds,
experiment with rotating the sensor and observe how the angle
reading changes. Remember, the Gyro Sensor measures the angle
of change on only one axis.
For more information, see Using the Gyro Sensor in the EV3 Software
Help.
LEGOeducation.com
LEGO, the LEGO logo, MINDSTORMS and the MINDSTORMS logo are trademarks of the/
sont des marques de commerce de/son marcas registradas de LEGO Group. ©2013 The LEGO Group. 041329.
Gyro Sensor
90...º
-90...º
Single axis rotation
Brick App screen
Port View with Gyro Sensor
13