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Questions tagged [grasp]

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move_group pick() function computes weird movements

I'm recently getting into ROS (Melodic, Ubuntu 18.04) and MoveIt!. For my project, I need to grasp an object from the table where the robot (a franka eremika panda) is placed. I wrote a python script ...
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User defined grasp pose for pick task

Hi, I am quite satisfied with the grasp generator that MoveIt task constructor offers, but I wanted to know if and also how it would be possible to define a custom grasp pose instead of a generated ...
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Pick and Place using 2 hands

I want to do a bimanual pick and place task for an object at a known position of a known shape using Moveit. I have been using this tutorial for reference. But, since this tutorial is for one hand, I ...
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Simple box grasping fails

Grasping is not working in this primitive case I've made. The object is a box of mass 1 and default friction and contact parameters. The gripper uses two prismatic joints to move two c-shaped links ...
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random bin picking

Dear Ros Users, I know that "random bin picking" is still an unsolved problem, but I would like to ask you if temptatives using ROS can be found. Thank you! Originally posted by Rahndall on ...
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schunk_svh_driver how to use "channel_feedback"

Hi, can you suggest me how to use the topic channel_feedback to control the grasps of objects online? Thank you. Originally posted by Alba on ROS Answers with karma: 20 on 2015-04-26 Post score: 0 ...
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PR2 + Hydro - Easiest way to close a gripper?

Hi all, After interacting with some objects on a table, the grasp of the PR2 opens. I need to close it after each iteration, to be able to compare the changes in the scene before and after the ...
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Where are the grapsing package for ROS?

I know moveit provide it. Is there any else? I want to try more and compare. Thank you~ Originally posted by sam on ROS Answers with karma: 2570 on 2014-06-03 Post score: 0
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Object manipulator: how to lift upwards? (using different approach & lift directions for grasping)

Hi all, I'm using object_manipulator, as part of the Object Manipulation Pipeline, to approach an object, grasp it, and pick it up. I would like to approach from a horizontal/sideways direction (to ...
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Gripper Grasp Planner Cluster - gripper model changes during grasp testing

Hi all, I'm testing pr2_gripper_grasp_planner_cluster, which plans grasps on PointClouds as part of the Tabletop Manipulation pipeline. This node requires a configuration file, specifying a model of ...
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problem with pick and place application tutorial

Hi, I am following the tutorial in the following link : http://www.ros.org/wiki/pr2_tabletop_manipulation_apps/Tutorials/Writing%20a%20Simple%20Pick%20and%20Place%20Application I am using ROS ...
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pr2 Keeps Dropping Objects

I've been working with the pr2 pick and place example, and it seems that whenever the robot picks up an object (in this case, the mug from gazebo_worlds/objects/coffee_cup.model) and then moves either ...
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Problem with the reference frame of grasps in the household_objects_database

I'm using the manipulation stack in ROS electric, in a simulated environment in Gazebo. I have a simulated robot arm and hand, a simulated table and a coke can, and a simulated kinect. Object ...
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