Victor troubles

[Camren]

Ok folks having some really wired problems with my victors to start off no their not brand new but they are from last year they are hooked up in the
12v power distribution spot and are connected using a pwm cable. but when i enable the robot the motors starts spinning in reverse when the joystick is in the 0 position when the joy stick is in the -1 position it stops and when its in the 1 position it goes forward im looking for some insite on what i can do to fix this

[Matt Krass]

Originally Posted by Camren

Ok folks having some really wired problems with my victors to start off no their not brand new but they are from last year they are hooked up in the
12v power distribution spot and are connected using a pwm cable. but when i enable the robot the motors starts spinning in reverse when the joystick is in the 0 position when the joy stick is in the -1 position it stops and when its in the 1 position it goes forward im looking for some insite on what i can do to fix this

It sounds like they're waaaaaaaay out of calibration, or your code is whacked out. I'd suspect code first.

What are you using to program the robot? I'd use a printf() (or the equivalent for your programming language) to dump out what commands you're issuing the Victors in code to make sure it's doing what you want. If it is, then try calibrating them.

Out of curiousity, what are the lights on the Victors doing as this occurs?

[Micah Chetrit]

that sounds like programming. I use C++, but what I would do is when I "get" the value from the joystick subtract one and that should (emphasis on should) fix it.

[Matt Krass]

Originally Posted by Micah Chetrit

that sounds like programming. I use C++, but what I would do is when I "get" the value from the joystick subtract one and that should (emphasis on should) fix it.

This doesn't sound as simple as an offset error, but something a bit more loopy.

It would also help to see the code that commands the Victors.

My IM contact information is in my profile, if you guys want to try and reach me directly, I'm assuming you're competing this weekend, so obviously you're in a time crunch.

Matt

[Camren]

Actually this is our practice bot since are is bagged and tagged and the lights that flash are orange when dissable and then red and orange when enable red when it starts to jolt and spins motor and orange when it is stopped also we use lab view software to program

[Matt Krass]

Originally Posted by Camren

Actually this is our practice bot since are is bagged and tagged and the lights that flash are orange when dissable and then red and orange when enable red when it starts to jolt and spins motor and orange when it is stopped

Sounds like it's your code. Can we see it? What language is it in?

[Vikesrock]

Are the Victors properly set as Victors when you open the Device Reference in Begin.VI?

If they are, or you don't know what that means, please post your Begin.VI and Teleop.VI and let us know which DevRefs refer to the devices in question.

[DavidGitz]

Are they referenced as Servo's?

[Camren]

Teleop.vi
Begin.vi

[Vikesrock]

Originally Posted by Camren

Attachment 10336
Attachment 10337

Looks like your copy of Labview has not been updated. On your programming computer you need to get the Labview Update and Utilities Update from this page


On your Classmate or other Driver Station computer you need to get the Driver Station Update from the same page.

After updating Labview your Open 2 Motor VI will become a polymorphic VI. This means it will have a box under it like your solenoid VIs do to select the type of motor controller (Jaguar, Victor, CAN Jaguar). Change the box to Victor and you should be good to go with the Drive motors.

Does that solenoid code work properly? If you want to set a single solenoid using one of two buttons you should use a single Solenoid Set VI and an AND to combine the button signals. If they are double solenoids which is what your comments seem to suggest then you may be able to use the code in a similar way to how it is currently written but you will have to pass a device reference for a single solenoid on the appropriate channel to each solenoid set VI, not the same device reference to both.

[Al Skierkiewicz]

Don't forget that Victors and Jaguars have a calibrate feature. This is a simple internal learning mode that establishes the extreme throttle positions and center position of your joysticks. If the center calibration is off your motors will move when your joysticks are centered. Since these are not new, consider that someone has calibrated to different center values in the past.

[slijin]

Originally Posted by Al Skierkiewicz

Don't forget that Victors and Jaguars have a calibrate feature. This is a simple internal learning mode that establishes the extreme throttle positions and center position of your joysticks. If the center calibration is off your motors will move when your joysticks are centered. Since these are not new, consider that someone has calibrated to different center values in the past.

To by knowledge, doesn't Victor calibration involves moving from 0, then back and forth between -1 and 1, then back to 0 to identify maximum forward, maximum reverse, and neutral? I can't quite see how they would be recalibrated to 1 fd, 0 rev, and -1 neutral.

This sounds more like a code issue to me, though I can't see for the life of me how it's happening.