Search found 51 matches

by alix
27 May 2020, 03:19
Forum: General questions
Topic: Picking Up Moving Object from Conveyor Belt without using Vision Sensor
Replies: 1
Views: 795

Picking Up Moving Object from Conveyor Belt without using Vision Sensor

Hi Everyone, I have seen V-REP scenes in which an object moves along the conveyer belt, gets detected at a proximity sensor, belt stops, and then it is picked up by the robot. What if I want to do the same scene but without stopping the conveyer belt, how can we do it without using a vision sensor ?...
by alix
03 Apr 2020, 23:11
Forum: General questions
Topic: How to set a rectangular workspace on a conveyer belt
Replies: 4
Views: 1608

Re: How to set a rectangular workspace on a conveyer belt

http://www.onemathematicalcat.org/Math/Geometry_obj/graphics/quadrilateral.bmp Let \(\alpha,\beta\) two real numbers uniformly sampled from \([0,1]\) you can define your point as \(p=(1-\beta) ((1-\alpha) A + \alpha D) + \beta ((1-\alpha) B + \alpha C)\) In Lua code: function interp(a,b,t) local r=...
by alix
03 Apr 2020, 13:24
Forum: General questions
Topic: How to set a rectangular workspace on a conveyer belt
Replies: 4
Views: 1608

Re: How to set a rectangular workspace on a conveyer belt

Not sure I understand what you mean. You can define a quadrilateral with 4 dummies, and sample a point inside it using math.random . Hi fferi, Thanks for the reply. This is exactly what i am trying to do. Can you please elaborate a bit about how to define the quadrilateral and sample point? Thanks ...
by alix
02 Apr 2020, 23:24
Forum: General questions
Topic: How to set a rectangular workspace on a conveyer belt
Replies: 4
Views: 1608

How to set a rectangular workspace on a conveyer belt

Hi. My question can be bit confusing, but please bear with me. I want to define a rectangular space on a conveyer belt. So the robot will try to reach target being within that rectangle. Not outside that rectangle. How can i define that rectangle in vrep through my code? Is there any way that the ta...
by alix
20 Mar 2020, 13:39
Forum: General questions
Topic: Motion Planning - Picking Angle Change
Replies: 1
Views: 1195

Motion Planning - Picking Angle Change

Hi, I have seen MotionPlaningandGrasping.ttt Scene. I am using Jaco with that code. It approaches the target from side . I wanted to know that how can i make it reach the target from the top angle. Like how this baxter is picking : https://imgur.com/ShgxfhN where and what changing will be required ?...
by alix
06 Mar 2020, 13:09
Forum: General questions
Topic: Fake Grasping with ROBOTIQ_85
Replies: 1
Views: 1602

Fake Grasping with ROBOTIQ_85

Hi, I attached ROBOTIQ_85 gripper to Jaco for Pick and Place using Motion Planning with OMPL. I tried the fake grasping method as it is told in the script of the gripper. The problem is that the claws of gripper ar not fully closing there is space between the object and claws. I am attaching a pictu...
by alix
11 Feb 2020, 17:11
Forum: General questions
Topic: Nill Value Returning
Replies: 1
Views: 970

Nill Value Returning

Hi, I have this function from MotionPlanning scene: generatePathLengths=function(path) -- Returns a table that contains a distance along the path for each path point --for i=1, #path, 1 do --printToConsole(path[i]) --end local d=0 local l=6 local pc=#path/l local retLengths={0} for i=1,pc-1,1 do loc...
by alix
09 Jan 2020, 12:22
Forum: General questions
Topic: How to select multiple objects?
Replies: 2
Views: 1206

Re: How to select multiple objects?

Hello, I wonder know how to select multiple objects considering I have nearly a hundred objects to delete. Someone said shift+click and drag, I can't understand how to operate it. Can you give some suggestion? Thank you very much. Hi Elin, Just go to 'Scene Hierarchy' pane on left , select fist obj...
by alix
02 Dec 2019, 15:49
Forum: General questions
Topic: RG2 gripper Keeps on Falling from Jaco Arm
Replies: 7
Views: 1900

Re: RG2 gripper Keeps on Falling from Jaco Arm

I guess there are many ways to implement this. How this was implemented in the scene you mention is following: First, we try to reach an approach pose. This is typically a couple of centimeters away from the goal pose. This is handled via path planning functions. That approach pose is normally spec...
by alix
28 Nov 2019, 11:30
Forum: General questions
Topic: RG2 gripper Keeps on Falling from Jaco Arm
Replies: 7
Views: 1900

Re: RG2 gripper Keeps on Falling from Jaco Arm

From the picture it looks ok. But it is just a picture. Please post the scene. To make the gripper open/close slower/faster, adjust the variable motorVelocity in the child script attached to the gripper base. Cheers Hi Coppelia, Bundle of thanks for the help, it got resolved when I made the IKTip c...