quadruped_ros2_control/descriptions/deep_robotics/lite3_description/xacro/transmission.xacro

<?xml version="1.0"?>

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

  <!-- FL transmissions -->
  <transmission name="FL_HipX_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="FL_HipX">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="FL_HipX_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="FL_HipY_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="FL_HipY">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="FL_HipY_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="FL_Knee_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="FL_Knee">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="FL_Knee_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <!-- FR transmissions -->
  <transmission name="FR_HipX_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="FR_HipX">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="FR_HipX_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="FR_HipY_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="FR_HipY">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="FR_HipY_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="FR_Knee_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="FR_Knee">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="FR_Knee_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <!-- HL transmissions -->
  <transmission name="HL_HipX_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="HL_HipX">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="HL_HipX_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="HL_HipY_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="HL_HipY">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="HL_HipY_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="HL_Knee_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="HL_Knee">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="HL_Knee_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <!-- HR transmissions -->
  <transmission name="HR_HipX_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="HR_HipX">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="HR_HipX_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="HR_HipY_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="HR_HipY">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="HR_HipY_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

  <transmission name="HR_Knee_tran">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="HR_Knee">
      <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
    </joint>
    <actuator name="HR_Knee_motor">
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

</robot>