LEGO EV3 User Manual

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If your EV3 Brick suddenly stops working and cannot be shut down
through the normal process, you will need to reset your EV3 Brick.
Resetting the EV3 Brick does not delete existing files and projects
from previous sessions in the EV3 Brick memory. Files and projects
from the existing session will be lost.
 Make sure that the EV3 Brick is turned on.
2. Hold down the Back, Centre, and Left buttons on the EV3 Brick.
3. When the screen goes blank, release the Back button.
4. When the screen says ‘Starting’, release the Centre and Left
buttons.
Forced Restart of the EV3 Brick
NOTE:
Check your EV3 Brick batteries
before reinstalling firmware.
Problems may simply be due
to worn-down batteries!
TROUBLESHOOTING

LEGO EV3 Specifications

General

Processor	ARM9
RAM	64 MB
Storage	16 MB Flash
Display	178 x 128 pixel monochrome LCD
Power Source	6 AA batteries or rechargeable battery pack
Operating System	Linux-based
USB Ports	1 USB 2.0 host port
Connectivity	Bluetooth 2.1, Wi-Fi (via USB dongle)
Input Ports	4
Output Ports	4
Programming Languages	Python
Sensors	Touch, Color, Gyro
Speaker	Built-in