Need help w/ moving Camera Servo motors.

[umangv620]

Originally Posted by Greg McKaskle

When I look at the code Teleop code at : http://i48.tinypic.com/sqqe8n.jpg I see that each time it is called, 50 times a second, the joysticks are being closed, additionally, the drive is being opened and closed.

Move the Opens to Begin, the Closes to Finish, and see if that helps. By the way, you'll need to name and store the drive.

Greg McKaskle

Thats what we had. We were getting errors, so we deleted that part and opened the joysticks and drive in now robot main(not teleop) and closed it in robot main as well. When we do this, our joysticks function correctly.

When we open the joysticks and the drive in begin.vi and reference them, the joysticks act funny and so does drive. Which is why i was wondering if anyone could post or PM any screenshots or code that could help us out.

[ecnahc515]

Originally Posted by umangv620

Thats what we had. We were getting errors, so we deleted that part and opened the joysticks and drive in now robot main(not teleop) and closed it in robot main as well. When we do this, our joysticks function correctly.

When we open the joysticks and the drive in begin.vi and reference them, the joysticks act funny and so does drive. Which is why i was wondering if anyone could post or PM any screenshots or code that could help us out.

That probably means you opened up the same reference or something, more than once. It should work fine with the begin and finish VI's, while having your reference and settings in the teleop. If it isn't than you set something up wrong.

[umangv620]

Originally Posted by ecnahc515

That probably means you opened up the same reference or something, more than once. It should work fine with the begin and finish VI's, while having your reference and settings in the teleop. If it isn't than you set something up wrong.

The problem was that Arcade Drive was running in Teleop.vi and Tank Drive was running in Robot Main.vi

Im guessing Arcade Drive is originally in Teleop.vi because we never put it there.
Anyways, we fixed the problem. The error was that the power cable was not properly connected to the Digital Sidecar.

[Doc Wu]

I just read your post. We have been doing the same thing with a servo, but with two preset positions and a button to toggle between them.

Here's a picture of our code:

I put this in a sub-vi, called from teleop.vi. Two controls in teleop.vi are used to set the two angles of the servo. When you get them where you want, either make the current value the default value, (right-click and select Data Operations) or replace them with a constant of the same value. The green, boolean wire comes from the joystick button where it breaks out from the unbundle block.



The Flip-Flop.vi is used to latch the button. I found the VI here on CD a while back, posted by one of the NI people. I don't recall the name or exact post, but it's been quite useful, once I made a few modifications to simplify it for our use.

[umangv620]

Thanks, but we have already solved this problem by wiring axis 3 of joystick 3 to the Camera Set Position. It is much simpler code.