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-   -   WE GOT A PROBLEM!!!! (http://www.chiefdelphi.com/forums/showthread.php?t=74129)

Drake Hunter 10-02-2009 23:13

WE GOT A PROBLEM!!!!
 
We recently rewired our robot and when i went to turn the robot on and everything started moving so im not sure what is going on....not sure if it has to do with the cRIO but i've checked the wiring and cant find anything obvious i did wrong....any suggestions would be greatly appreciated

Akash Rastogi 10-02-2009 23:15

Re: WE GOT A PROBLEM!!!!
 
Everything started moving?

Is your joystick trimmed?

Please provide more information about your specific problem so we can help.

Jetweb 10-02-2009 23:15

Re: WE GOT A PROBLEM!!!!
 
Are you programmed for jaguars and using victors?

RyanN 10-02-2009 23:27

Re: WE GOT A PROBLEM!!!!
 
Pictures are worth 1,000 words. I don't know where to start helping you.

zivo123 10-02-2009 23:30

Re: WE GOT A PROBLEM!!!!
 
plug out the joysticks and turn on again that can give us the first clue for what the problem is..

Drake Hunter 10-02-2009 23:43

Re: WE GOT A PROBLEM!!!!
 
The thing is i dont have the driver station plugged in and it still moves

elbuo 10-02-2009 23:59

Re: WE GOT A PROBLEM!!!!
 
Autonomous taking over?
DUDE! Check that you don't have the wires in the jaguars/victors inverted...

Drake Hunter 11-02-2009 00:11

Re: WE GOT A PROBLEM!!!!
 
Quote:

Originally Posted by elbuo (Post 818360)
Autonomous taking over?
DUDE! Check that you don't have the wires in the jaguars/victors inverted...

I think that might have been our problem....thanks

Drake Hunter 11-02-2009 01:43

Re: WE GOT A PROBLEM!!!!
 
Quote:

Originally Posted by elbuo (Post 818360)
Autonomous taking over?
DUDE! Check that you don't have the wires in the jaguars/victors inverted...

we switched them around and it still doesn't work....do you think we could have fried the jags?

Vikesrock 11-02-2009 01:59

Re: WE GOT A PROBLEM!!!!
 
If there is no driver station plugged in and you are still seeing this behavior it is likely that something is wired incorrectly. With no DS the cRIO should have the outputs disabled. To verify this the small green LED to the right of the RSL connector should be on a fast blink (200ms on / 200ms off).

If this is the case you either have a hardware failure or a wiring issue.

The PWM cable should be connected to the Jaguar with the Black wire on the "inside" (the side where the other ports are located). The other end of the cable should be connected to a PWM header on the Digital Sidecar with the black wire on the "outside" (the side away from the adjacent 2 pin headers).

The Jaguar should have V+ connected to a red terminal on the Power Distribution board with an appropriate breaker installed and V- connected to the adjacent black terminal. M+ and M- should be wired to one terminal of the motor each.

elbuo 11-02-2009 10:02

Re: WE GOT A PROBLEM!!!!
 
Quote:

Originally Posted by Drake Hunter (Post 818395)
we switched them around and it still doesn't work....do you think we could have fried the jags?

I know because my team did the same thing...
Just open them and fix them.
It should have an open circuit or something like that. I didn't fix them myself so I'm not completely sure.

Mike Betts 11-02-2009 10:09

Re: WE GOT A PROBLEM!!!!
 
Quote:

Originally Posted by Drake Hunter (Post 818395)
we switched them around and it still doesn't work....do you think we could have fried the jags?

If you didn't before, you have now...

Jaguars are not protected on the input voltage terminals from reverse wiring. Wiring the input in reverse polarity will almost certainly destroy the device.

Mike

elbuo 11-02-2009 10:20

Re: WE GOT A PROBLEM!!!!
 
Jaguars are not easy to fry.
I thought the same thing here and people said I was doomed and we fixed them :D
Just open it and give it to somebody that knows about open circuits.

Al Skierkiewicz 11-02-2009 10:58

Re: WE GOT A PROBLEM!!!!
 
A representative from Luminary Micro said do not reverse the wiring. They are not protected by anything other the circuit breakers.

Mike Betts 11-02-2009 11:16

Re: WE GOT A PROBLEM!!!!
 
Quote:

Originally Posted by elbuo (Post 818539)
Jaguars are not easy to fry.
I thought the same thing here and people said I was doomed and we fixed them :D
Just open it and give it to somebody that knows about open circuits.


I'm sorry but that is not allowed as per the GDC: http://forums.usfirst.org/showthread.php?p=26610

Regards,

Mike


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