quadruped_ros2_control/descriptions/deep_robotics/lite3_description/xacro/robot.xacro

<?xml version="1.0"?>

<robot name="lite3" xmlns:xacro="http://www.ros.org/wiki/xacro">

  <xacro:include filename="$(find lite3_description)/xacro/const.xacro"/>
  <xacro:include filename="$(find lite3_description)/xacro/leg.xacro"/>

  <xacro:arg name="GAZEBO" default="false"/>
  <xacro:arg name="CLASSIC" default="false"/>


  <xacro:if value="$(arg GAZEBO)">
    <xacro:if value="$(arg CLASSIC)">
      <xacro:include filename="$(find lite3_description)/xacro/gazebo_classic.xacro"/>
    </xacro:if>
    <xacro:unless value="$(arg CLASSIC)">
      <xacro:include filename="$(find lite3_description)/xacro/gazebo.xacro"/>
    </xacro:unless>
  </xacro:if>
  <xacro:unless value="$(arg GAZEBO)">
    <xacro:include filename="$(find lite3_description)/xacro/ros2_control.xacro"/>
  </xacro:unless>

  <link name="base">
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <box size="0.001 0.001 0.001"/>
      </geometry>
    </visual>
  </link>

  <joint name="floating_base" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="base"/>
    <child link="TORSO"/>
  </joint>

  <link name="TORSO">
    <visual>
      <origin rpy="0 0 3.1416" xyz="0.0 0.0 0.0"/>
      <geometry>
        <mesh filename="file://$(find lite3_description)/meshes/Lite3.dae"/>
      </geometry>
    </visual>
    <collision>
      <geometry>
        <box size="0.35 0.184 0.08"/>
      </geometry>
    </collision>
    <inertial>
      <origin xyz="0.004098 -0.000663 -0.002069"/>
      <mass value="4.130"/>
      <inertia ixx="0.016982120" ixy="2.1294E-05" ixz="6.0763E-05" iyy="0.030466501" iyz="1.7968E-05"
               izz="0.042609956"/>
    </inertial>
  </link>

  <joint name="imu_joint" type="fixed">
    <parent link="TORSO"/>
    <child link="imu_link"/>
    <origin rpy="0 0 0" xyz="0 0 0"/>
  </joint>

  <link name="imu_link">
    <inertial>
      <mass value="0.001"/>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <inertia ixx="0.0001" ixy="0" ixz="0" iyy="0.0001" iyz="0" izz="0.0001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <box size="0.001 0.001 0.001"/>
      </geometry>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <box size=".001 .001 .001"/>
      </geometry>
    </collision>
  </link>

  <xacro:leg name="FR" mirror="-1" mirror_dae="False" front_hind="1" front_hind_dae="True"/>
  <xacro:leg name="FL" mirror="1" mirror_dae="True" front_hind="1" front_hind_dae="True"/>
  <xacro:leg name="HR" mirror="-1" mirror_dae="False" front_hind="-1" front_hind_dae="False"/>
  <xacro:leg name="HL" mirror="1" mirror_dae="True" front_hind="-1" front_hind_dae="False"/>

</robot>