ROS Indigo + Turtlebot +Raspberry Pi 3

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I've installing the same target environment software... But my turtlebot don't work...

I have this error :

[ERROR] [WallTime: 1487674200.166287] Failed to contact device with error: [Distance, angle displacement too big, invalid readings from robot. Distance: 0.00, Angle: -420.89]. Please check that the Create is powered on and that the connector is plugged into the Create.

Do you have a solution for this issue ?

Thanks !

Jérôme