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Forum: Vizard 12-10-2012, 08:12 AM
Replies: 5
Views: 4,517
Posted By mhead10
[QUOTE=JimC;14435]Just quickly looking, the...

[QUOTE=JimC;14435]Just quickly looking, the reason T12 isn't getting set is probably the error (extra '=') in this line:

Ahh, JimC, nice find! Unfortunately, this still yields the same results for...
Forum: Vizard 12-07-2012, 09:48 AM
Replies: 5
Views: 4,517
Posted By mhead10
I tried to create an easier example but I was...

I tried to create an easier example but I was unsuccessful. I am not sure how to replace the DAQ for instance with a keyboard. Can you tell if my syntax where I assign values to the transformations...
Forum: Vizard 12-07-2012, 08:56 AM
Replies: 5
Views: 4,517
Posted By mhead10
Simple Forward Kinematic Example

Hello,

I am trying to create a simple forward kinematics simulation using a DAQ USB 6008 connected to potentiometers. Each potentiometer signifies a revolute degree of freedom of a link like the...
Forum: Vizard 11-25-2012, 03:21 PM
Replies: 9
Views: 6,848
Posted By mhead10
I realize this is hard to troubleshoot, but does...

I realize this is hard to troubleshoot, but does no response mean you're out of ideas?
Forum: Vizard 11-08-2012, 01:26 PM
Replies: 9
Views: 6,848
Posted By mhead10
Jeff, I'm getting closer, but still not...

Jeff,

I'm getting closer, but still not quite there. I can get the centers assigned correctly, but my simulation displays my tool in what looks like 3 different places at the same time still...
Forum: Vizard 11-03-2012, 11:43 AM
Replies: 9
Views: 6,848
Posted By mhead10
Jeff, thanks for the reply. I've created a simple...

Jeff, thanks for the reply. I've created a simple example below for your review. I've assigned three different centers to rotate about in my Kinematic function.


import viztask
import viz...
Forum: Vizard 11-02-2012, 01:44 PM
Replies: 3
Views: 4,150
Posted By mhead10
Jeff, thanks for your reply. I think I found...

Jeff, thanks for your reply.

I think I found the problem (for the 2nd example) was because the ball's center was at (0,0,0) and the position was initially (0,0,0) as well. Therefore, the ball was...
Forum: Vizard 11-02-2012, 08:49 AM
Replies: 9
Views: 6,848
Posted By mhead10
Defining & Using Multiple Centers (of Rotation)

HELLO!

I'm still trying to find out how to set multiple centers (three) for my custom joystick.

Separately, my three joystick centers (and rotations/translations) work perfectly. However, when...
Forum: Vizard 11-01-2012, 04:52 PM
Replies: 1
Views: 3,418
Posted By mhead10
link.remove note working?

I have a grasper which opens and closes. When the grasper is nearby a torus, and is closed, I have linked the grasper with the torus.

However, when I open the grasper, and I remove the link (by...
Forum: Vizard 11-01-2012, 06:44 AM
Replies: 3
Views: 4,150
Posted By mhead10
I see the ring question has been answered here...

I see the ring question has been answered here (http://forum.worldviz.com/showthread.php?t=4271).

However, I would still benefit from someone helping with my first question. How do I get rid of...
Forum: Vizard 10-31-2012, 10:29 AM
Replies: 3
Views: 4,150
Posted By mhead10
Physics: Ball Bounces Unexpectly Based Upon Size + Ring Collision Shape

I have modified an example physics script to try and determine why my script isn't working. I want my "ball.wrl" to remain stationary on the ground (as it would in real life because gravity keeps it...
Forum: Vizard 10-16-2012, 07:41 AM
Replies: 9
Views: 6,848
Posted By mhead10
I solved the matrix multiplication using the...

I solved the matrix multiplication using the following great code by kai.

http://www.syntagmatic.net/matrix-multiplication-in-python/
Forum: Vizard 10-15-2012, 11:30 AM
Replies: 9
Views: 6,848
Posted By mhead10
I think I should be able to find a solution by...

I think I should be able to find a solution by matrix multiplication. However, I'm having some trouble with syntax.

Can someone tell me the correct way to multiply 4x4 and 4x1 matrices?

For...
Forum: Vizard 10-12-2012, 09:00 AM
Replies: 9
Views: 6,848
Posted By mhead10
Custom Joystick Rotation

Hello,

I'm trying to find the best way to simulate my grasper (like a tweezer- referred to as "babcock" in my code), which is driven by a custom joystick (I'm including an example picture...
Forum: Vizard 10-06-2012, 09:57 AM
Replies: 9
Views: 7,531
Posted By mhead10
If I'm now using two devices, how do I determine...

If I'm now using two devices, how do I determine what the names are?

For instance, previously I could use one device with the following code:

device = sensable.addHapticDevice()

However, now...
Forum: Vizard 10-04-2012, 01:18 PM
Replies: 2
Views: 4,171
Posted By mhead10
For some reason, my firewire card (connected to...

For some reason, my firewire card (connected to phantom omni's from sensable) has to be plugged in (even though I'm not using the omni joystick) for my code to not produce the previous error. I'm not...
Forum: Vizard 10-02-2012, 02:34 PM
Replies: 2
Views: 4,171
Posted By mhead10
** ERROR: Link failed (source linkable is invalid)

What does the following error mean (I cannot find much help on the issue):

** ERROR: Link failed (source linkable is invalid)

this happens when I try to load a .dae file (which does load if...
Forum: Vizard 10-02-2012, 01:48 PM
Replies: 1
Views: 3,375
Posted By mhead10
obtaining "None" value in Schedule

Can I not assign values in a schedule loop? For instance, the following code prints out "data" correctly, but not the computed value "difference".


def CHK(err):
if err < 0:
...
Forum: Vizard 09-27-2012, 04:22 AM
Replies: 5
Views: 15,848
Posted By mhead10
Sometimes my .obj and .wrl files would load, and...

Sometimes my .obj and .wrl files would load, and sometimes they would not. Therefore, to always get my 3d files to load (with their respective texture), I did the following to yield successful...
Forum: Vizard 09-25-2012, 10:29 AM
Replies: 9
Views: 7,531
Posted By mhead10
To make a long story short, I finally found using...

To make a long story short, I finally found using the newest driver from SensAble's website (4.2.133 (http://www.sensable.com/pdd-downloads-thankyou.htm#Alert)) instead of what comes packaged with...
Forum: Vizard 09-22-2012, 04:45 AM
Replies: 9
Views: 7,531
Posted By mhead10
I uninstalled and reinstalled Open Haptics 3.0...

I uninstalled and reinstalled Open Haptics 3.0 x64 onto my Windows 7 64-bit system. Now I just get the following error:
** ERROR: Failed to load plug-in: 'sensable3.dle' this in turn creates the...
Forum: Vizard 09-21-2012, 12:07 PM
Replies: 9
Views: 7,531
Posted By mhead10
I just restarted my computer and the error came...

I just restarted my computer and the error came back :confused:

Anymore thoughts? The error seems to be coming from the
device = sensable.addHapticDevice()
If I comment it out I get no error....
Forum: Vizard 09-21-2012, 11:38 AM
Replies: 9
Views: 7,531
Posted By mhead10
THANKS for fixing my dumb mistake! The name was...

THANKS for fixing my dumb mistake! The name was changed.
Forum: Vizard 09-21-2012, 11:32 AM
Replies: 9
Views: 7,531
Posted By mhead10
import ctypes import numpy import viztask ...

import ctypes
import numpy
import viztask
import time
import threading
nidaq = ctypes.windll.nicaiu # load the DLL
viz.go()

int32 = ctypes.c_long
uInt32 = ctypes.c_ulong
Forum: Vizard 09-21-2012, 10:38 AM
Replies: 9
Views: 7,531
Posted By mhead10
SenSable Open Haptics/Vizard SensAble Plugin

Hello All,

I'm using XP 32-bit (Open Haptics (http://www.sensable.com/openhaptics-system-requirements.htm) 3.0) and Windows 7 64-bit (Open Haptics 3.0) with Vizard 4. I am trying to get the...
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