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View Full Version : WE GOT A PROBLEM!!!!

Drake Hunter
10-02-2009, 23:13
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
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
Are you programmed for jaguars and using victors?
RyanN
10-02-2009, 23:27
Pictures are worth 1,000 words. I don't know where to start helping you.
zivo123
10-02-2009, 23:30
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
The thing is i dont have the driver station plugged in and it still moves
elbuo
10-02-2009, 23:59
Autonomous taking over?
DUDE! Check that you don't have the wires in the jaguars/victors inverted...
Drake Hunter
11-02-2009, 00:11
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
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
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
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
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
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
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
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
Drake Hunter
11-02-2009, 16:58
We got it fixed....had to go the town 100 miles away to pick up some new jags