4 System overview
Doc. ID 4374_139 v1.1
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Figure 7: Trackpad functionality in free-space mode
Gyro calibration
Smart Remote 3 firmware performs initial calibration on first firmware run, but if you experience that the
cursor is moving involuntarily when you start using the free-space navigation, this is due to gyro wandering.
The SmartMotion firmware library will automatically compensate for this movement. Simply leave the Smart
Remote on a flat surface with free-space navigation enabled. After a few seconds the cursor will stop moving
and you can pick up the Smart Remote and start using the free-space navigation feature.
4.1.5 Intelligent power saving
When the remote control has not been used for a few seconds, most of its functions are powered down to
conserve energy, including the trackpad, which means it will not react to user input.
In this powered down state the remote control relies on the low power accelerometer for notification of user
activity. When the remote control is picked up or nudged lightly, it will resume normal operation.
4.1.6 Keypad
The remote control includes a common remote control keypad that is used in TVs and set-top boxes.
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