Search found 62 matches

27 May 2020, 03:19
Forum: General questions
Topic: Picking Up Moving Object from Conveyor Belt without using Vision Sensor
Replies: 1
Views: 192

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 ?...
03 Apr 2020, 23:11
Forum: General questions
Topic: How to set a rectangular workspace on a conveyer belt
Replies: 4
Views: 708

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=...
03 Apr 2020, 13:24
Forum: General questions
Topic: How to set a rectangular workspace on a conveyer belt
Replies: 4
Views: 708

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 ...
02 Apr 2020, 23:24
Forum: General questions
Topic: How to set a rectangular workspace on a conveyer belt
Replies: 4
Views: 708

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...
20 Mar 2020, 13:39
Forum: General questions
Topic: Motion Planning - Picking Angle Change
Replies: 1
Views: 705

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 ?...
06 Mar 2020, 13:09
Forum: General questions
Topic: Fake Grasping with ROBOTIQ_85
Replies: 1
Views: 1108

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...
18 Feb 2020, 10:34
Forum: General questions
Topic: Gripper Opens up before Reaching the Destination
Replies: 5
Views: 797

Re: Gripper Opens up before Reaching the Destination

This is not dependent on the version: you can always buffer incoming data via appropriate scripting. Cheers Hi Coppelia, I am working with Python Legacy API, can you please highlight some relevant function from it which are to be used for sending all commands to be executed in buffer ???? Thanks a ...
17 Feb 2020, 16:44
Forum: General questions
Topic: Gripper Opens up before Reaching the Destination
Replies: 5
Views: 797

Re: Gripper Opens up before Reaching the Destination

Hello, what you should do is buffer the incoming commands on the CoppeliaSim side, which require sequential execution: only once a command was executed, will the next (buffered) command be fetched from the buffer and executed. Of course you can also have another type of commands that could be execu...
17 Feb 2020, 15:45
Forum: General questions
Topic: Gripper Opens up before Reaching the Destination
Replies: 5
Views: 797

Gripper Opens up before Reaching the Destination

Hi, I am picking an object from one point and placing it at another point, using OMPL for motion planning. When i did it with Lua threaded script it was fine. But now doing with Python legacy API and non-threaded script, the issue is that my code is like this: ############ EXECUTING THE MOTION OVER ...
11 Feb 2020, 17:11
Forum: General questions
Topic: Nill Value Returning
Replies: 1
Views: 484

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...