About The NXT Brick
Loudspeaker
When sounds are included in a
program, you can hear them through the
Loudspeaker.
Battery level
The battery icon displays the NXT power
level. When the battery power is low
(below about 10% capacity), the battery
icon fl ashes on and off.
Running icon
When the NXT is turned on, the running
icon spins. If the running icon stops
spinning, the NXT has frozen and
you must reset it. (See page 63 for
Troubleshooting steps).
Turning off your NXT
1. Press the Dark Gray button until you
see this screen.
2. Press the Orange button to turn off the
NXT. Press the Dark Gray button to go
back to the NXT main menu.
NXT buttons
Orange: On/Enter.
Light gray arrows: Navigation, left and right
Dark Gray: Clear/Go back.
12
Technology
Input ports
The NXT has four input ports for attaching
sensors. The sensors must be attached to
port 1, 2, 3, or 4.
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