Chief Delphi - How many Jaguars...

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Chomper2013

21-01-2011 15:20

How many Jaguars...

Is there a certain number of jaguars allowed on the robot, or is it just sticking with budget and weight requirements?

Mark McLeod

21-01-2011 15:44

Re: How many Jaguars...

The maximum is 20 simply due to the max number of PWM outputs available.

Alan Anderson

21-01-2011 16:27

Re: How many Jaguars...

Quote:

Originally Posted by Mark McLeod (Post 1005125)

The maximum is 20 simply due to the max number of PWM outputs available.

I almost answered the same thing, but then I remembered about CAN control.

Dkt01

21-01-2011 16:31

Re: How many Jaguars...

You aren't limited, but you may wish to reconsider your design if you have 10+ speed controllers.

jtdowney

21-01-2011 16:41

Re: How many Jaguars...

Quote:

Originally Posted by Alan Anderson (Post 1005154)

I almost answered the same thing, but then I remembered about CAN control.

The highest CAN ID that WPILib can address is 63. However there are only 20 connectors on the PD board so that would limit you first.

Mark McLeod

21-01-2011 16:41

Re: How many Jaguars...

Quote:

Originally Posted by Alan Anderson (Post 1005154)

I almost answered the same thing, but then I remembered about CAN control.

Slaps forehead :)
But John saves me with his answer.

We should add this to the "How many Spikes" thread.
As many decorative Jaguars as you like...

sitzikbs

21-01-2011 17:57

Re: How many Jaguars...

does anyone havea link to the jaguars specifications + wiring info ?

Polaris395

21-01-2011 18:25

Re: How many Jaguars...

Product specs available for download.
http://www.luminarymicro.com/products/mdl_bdc.html

That is for GREY jags. It you own the black version, they have a link to the spec page for them as well.

Tom Line

21-01-2011 18:44

Re: How many Jaguars...

Quote:

Originally Posted by jtdowney (Post 1005169)

The highest CAN ID that WPILib can address is 63. However there are only 20 connectors on the PD board so that would limit you first.

Be careful regarding that. Joe Herschberger from NI can answer this better than I can, however I've heard that there may be a limit on the number of jags due to the bandwidth of the serial port. The folks from CrossTheRoad Electronics can also probably answer this as they've delved into it developing the 2Can.

If you're going to have quite a few speed controllers, I'd find out what issues it might cause.

We've run up to 6 with no issues.

G33K	22-01-2011 02:04

Re: How many Jaguars...

I believe there are only 8 40-amp capable connectors on the PD board, so that's another limiting factor. Not sure what size breaker the larger BaneBots motors require, but I know the CIMs for sure require a 40A circuit breaker. Also, the main breaker/power switch is rated at 120A, so think about that as well.

kamocat

22-01-2011 02:48

Re: How many Jaguars...

Quote:

Originally Posted by Tom Line (Post 1005260)

The Black Jaguar datasheet says 16 is the maximum.
I haven't had a chance to test more than 9.

Al Skierkiewicz

22-01-2011 08:47

Re: How many Jaguars...

Is no one going to mention the cost limits?

Alan Anderson

22-01-2011 08:55

Re: How many Jaguars...

Quote:

Originally Posted by Al Skierkiewicz (Post 1005585)

Is no one going to mention the cost limits?

Budget and weight were mentioned in the original post.

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