harish556's profile - activity

Like do we need to add inertia to urdf, like when I just set it 0 it still works but when I set to some value it explodes.

Extrapolation Error: Lookup would require extrapolation i am working on a slam robot using only rplidar only, without an

when ever i start my navigation stack i get this error

    Warning: TF_REPEATED_DATA ignoring data with redundant timestamp for frame link_left_wheel at time 618.268000 according to authority unknown_publisher
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
Warning: TF_REPEATED_DATA ignoring data with redundant timestamp for frame link_right_wheel at time 618.268000 according to authority unknown_publisher
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
[ WARN] [1620280861.746819185, 618.270000000]: TF_REPEATED_DATA ignoring data with redundant timestamp for frame link_left_wheel at time 618.268000 according to authority unknown_publisher
[ WARN] [1620280861.747013021, 618.270000000]: TF_REPEATED_DATA ignoring data with redundant timestamp for frame link_right_wheel at time 618.268000 according to authority unknown_publisher

control robot using PCA9685 controller hey, i have a robot arm I want to use the PCA9685 controller for it using raspber

control robot using PCA9685 controller hey, i have a robot arm I want to use the PCA9685 controller for it using raspber

i have 6 dof robot arm in real-world and one in ros now i want to control it with ros using raspberry pi, i don't know how to start can somebody help with that

@osilva thanks for the replay,i was making a model myself using servo brackets, so its a custom design and i am using mg

connect ros with real robot i have 6 dof robot arm in real-world and one in ros now i want to control it with ros using

@osilva I have updated that in question

robot arm does not move to position i made a custom robot arm, when i move it to a goal location it seems it is not goin

robot arm does not move to position i made a custom robot arm, when i move it to a goal location it seems it is not goin

@osilva sorry for the late reply, like what kinda info do you want?

robot arm does not move to position i made a custom robot arm, when i move it to a goal location it seems it is not goin

I have made custom urdf for 6 DOF robot, when I run it it shows this error

I have added ros control to this this is the YAML file

robot: #list of controllers joint_state_controller: type: joint_state_controller/JointStateController publish_rate: 50

arm_controller:
  type: "position_controllers/JointTrajectoryController"
  joints:
    - base_link_link_1
    - link_1_link_2
    - link_2_link_3
    - link_3_link_4
    - link_4_link_5
    - link_5_link_6
  gains:
    base_link_link_1: {p: 100, i: 0.01, d: 1}
    link_1_link_2:    {p: 100, i: 0.01, d: 1}
    link_2_link_3:    {p: 100, i: 0.01, d: 1}
    link_3_link_4:    {p: 100, i: 0.01, d: 1}
    link_4_link_5:    {p: 100, i: 0.01, d: 1}
    link_5_link_6:    {p: 100, i: 0.01, d: 1}

  constraints:
    goal_time: 10.0                  # Override default

  state_publish_rate:  50            # Override default
  action_monitor_rate: 30            # Override default
  stop_trajectory_duration: 0        # Override default

gripper_controller:
  type: "effort_controllers/JointTrajectoryController"
  joints:
    - gripper_right_joint
    - gripper_left_joint
  gains:
    gripper_right_joint: {p: 100, i: 1, d: 10, i_clamp: 1.0}
    gripper_left_joint:  {p: 100, i: 1, d: 10, i_clamp: 1.0}
  constraints:
    goal_time: 3.0
    gripper_right_joint:
      goal: 0.02
    gripper_left_joint:
      goal: 0.02

i am used ros noetic

thanks for that