Search found 8 matches

by MattDerry
10 Mar 2015, 17:42
Forum: General questions
Topic: Respondable Outdoor Environments
Replies: 2
Views: 1564

Re: Respondable Outdoor Environments

I should add that I don't really need the results of plowing the snow to be physically realistic (e.g. snow piling up on the plow blade). It's fine if the snow just disappears when the robot gets to that part of the snow. Primarily this is just to test proof of concept planning and control algorithms.
by MattDerry
10 Mar 2015, 17:05
Forum: General questions
Topic: Respondable Outdoor Environments
Replies: 2
Views: 1564

Respondable Outdoor Environments

Hello, The context of this question is that I'd like to work on planning behaviors for an automated snow-plow. I have a question about building an outdoor environment that simulates a certain depth of snow on the ground. Once I have the snow on the ground, I'd like to use something like the drill fu...
by MattDerry
02 Apr 2014, 15:49
Forum: Bug reports
Topic: Mico Model Bug
Replies: 1
Views: 1786

Mico Model Bug

This is a very minor bug and this may not be the place to post it, but the new Mico arm model distributed with the latest version (3.1.1) of V-REP has an incorrectly oriented joint. We have a Mico in our lab and I was just comparing the V-REP model to our arm when I found that Joint 5 in the model n...
by MattDerry
11 Jul 2013, 20:05
Forum: General questions
Topic: Friction in a non-motor-enabled joint
Replies: 1
Views: 1946

Friction in a non-motor-enabled joint

Hello, I'm continuing in my saga towards actually being able to grasp the handle of the crank for the project I'm working on. I have the model dynamics working pretty well on the arm itself, but now I'm looking at the crank that is to be turned. It's basically 3 links with 2 joints that don't have t...
by MattDerry
08 Jul 2013, 16:21
Forum: General questions
Topic: Making an object stick in a grasp
Replies: 4
Views: 3720

Re: Making an object stick in a grasp

I wanted to thank you again. I was able to incorporate an invisible suction pad in to my model and it worked pretty much perfectly for my needs. And with your last post, I have a better understanding of how it works. Thanks again, you've built an awesome simulator here.
by MattDerry
08 Jul 2013, 14:54
Forum: General questions
Topic: Making an object stick in a grasp
Replies: 4
Views: 3720

Re: Making an object stick in a grasp

Thanks for the fast response!!! A rigid connection would probably be best. I'll take a look at the suction pad example and see what that looks like. The main difference I can see right now is that in that example the shapes are free, in my case the handle is attached to a crank. Would this be a prob...
by MattDerry
08 Jul 2013, 13:48
Forum: General questions
Topic: Making an object stick in a grasp
Replies: 4
Views: 3720

Making an object stick in a grasp

Hello, I'm trying to control an arm using the kinect and grasp a handle on a crank. The kinect has a fair amount of jitter in it making it difficult to be precise, so to accommodate that, I was hoping to do something like: if distance from gripper to handle < some_threshold and task_is_active progra...
by MattDerry
12 Apr 2013, 06:15
Forum: General questions
Topic: ROS LaserScan messages
Replies: 3
Views: 4773

ROS LaserScan messages

Hello, I'm trying to get a LaserScan message in ROS from a simulated Hokuyo laser in V-Rep. My first thought was to use the simros_strmcmd_get_range_finder_data publisher and then on the ROS side use the pointcloud_to_laserscan method to convert it, but for some reason, the LaserScan that is being g...