==========================
Frequently Asked Questions
==========================

.. _Intel real-sense: https://dev.intelrealsense.com/docs/nvidia-jetson-tx2-installation
.. _ROS network setup: http://wiki.ros.org/ROS/NetworkSetup
.. _Turtlebot preception guide: https://www.mybotshop.de/Turtlebot3-3D-SLAM
.. _Unitree App: https://unitree.com/app/



Wireless Access B1
~~~~~~~~~~~~~~~~~~~
The B1 can be wirelessly accessed by its onboard hotspot. It usually has the name 
**UnitreeRoboticsB1-##** followed by the model number. The default password is **00000000**.


* The main controller ip:

.. code-block:: bash

    ssh -X unitree@192.168.123.161


* The Nvidia controller ip:

.. code-block:: bash

    ssh -X unitree@192.168.123.12

.. important::
    The password for both are **123**.

The `Unitree App`_ can be used to view the robot as well.

    * For recording and visualing its data, it is recommended to use record a rosbag transfer it back to your computer and 
      play it:


* Record rosbag:

.. code-block:: bash

    rosbag record -a
  
* Play rosbag:

.. code-block:: bash
        
    rosbag play -l <file_name.bag>

Display not visible B1
~~~~~~~~~~~~~~~~~~~~~~~

    There are two pcs on the robot. The front side of the robot has some ports they are for Rasberry Pi.
    Here you can connect the HDMI cable and than restart the robot because if the robot is turned on and
    than you connect an HDMI adapter then it will not show anything. So you have to restart after connecting the HDMI.
    For Nvidia the same procedure applies.

    .. note::
        The Nvidia's moAlstherboard goes to sleep, so if you connect an external mouse or keyboard you can directly 
        wake it up.