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Yahya Gilany
16-01-2011, 13:21
Does any one have a working example on how to program a mecanum wheels to move side by side using LabView, please ?? :confused:


Thanks!!:)
Ether
16-01-2011, 13:32
Does any one have a working example on how to program a mecanum wheels to move side by side using LabView, please ?? :confused:


Thanks!!:)


There's a vi for that.

Holonomic vi

The "Y" input to the vi is for forward/reverse motion.

The "X" input to the vi is for strafe right/left (sideways) motion.

The "Rotation" input to the vi is for turning (yaw).


To take advantage of all three possible motions, you will need to provide those 3 inputs to the vi, so you will need a 3-axis joystick or two 2-axis joysticks or some other scheme.
Yahya Gilany
16-01-2011, 13:44
thanks a lot . does that works with 4 wheels that all in the same direction !! ( forward\ reverse) ??
I thought we might need 2 wheels going ( forward ) and the other 2 ( reverse ) so that it moves side by side !
Ether
16-01-2011, 13:52
thanks a lot . does that works with 4 wheels that all in the same direction !! ( forward\ reverse) ??I thought we might need 2 wheels going ( forward ) and the other 2 ( reverse ) so that it moves side by side

I'm not sure what you mean by the above, but there IS a right way and a wrong way to mount the mecanum wheels.

Take a look at this thread (http://www.chiefdelphi.com/forums/showpost.php?p=907174&postcount=18). The "X" and "O" mentioned in the post is the visual appearance of the mecanum rollers. The wheels themselves should all be aligned parallel to the robot's fore/aft axis.
Belenus
19-01-2011, 15:31
Ok I am very new, and this may be a stupid question but where is the "Holonomic vi" I can not find it and non of the team is really great with LabView yet.

Thanks Jeff
Alan Anderson
19-01-2011, 16:06
...where is the "Holonomic vi"...

At the bottom of the functions palette is the "WPI Robotics Library".
The first thing in the WPI Robotics Library is "RobotDrive".
You'll find the Holonomic Drive vi right next to Tank Drive and Arcade Drive.
BenGrapevine
19-01-2011, 17:34
At the bottom of the tool palette is the "WPI Robotics Library".
The first thing in the WPI Robotics Library is "RobotDrive".
You'll find the Holonomic Drive vi right next to Tank Drive and Arcade Drive.

My team has decided on Mecanum wheels, and I still can't find the "WPI Robotics Library".

This is what I did, correct me if I'm wrong, PLEASE!

1. Open LABVIEW 2011
2. Go up to the "tools" bar
3. ?? (Where do I find the "WPI Robotics Library"?)
4. Holonomic Drive VI
5. Profits
Belenus
19-01-2011, 18:05
Thanks everyone, you all are very helpful.
Alan Anderson
19-01-2011, 22:28
At the bottom of the tool palette is the "WPI Robotics Library".

I meant "functions palette", not "tool palette". Sorry about that.

You can open the function palette by right-clicking on a blank spot in the block diagram, or by choosing "Functions Palette" from the View menu.
BenGrapevine
20-01-2011, 17:01
Forget my comment, I learned how to make mecanum from scratch.