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-   -   extra connector on breaker panel (http://www.chiefdelphi.com/forums/showthread.php?t=32461)

sciguy125 10-01-2005 14:37
extra connector on breaker panel
 
The new breaker panel has a 3 pin connector next to the LED. It isn't labeled in the manual though. Does anyone know what it does?

Al Skierkiewicz 10-01-2005 15:44
Re: extra connector on breaker panel
 
Quote:
Originally Posted by sciguy125
The new breaker panel has a 3 pin connector next to the LED. It isn't labeled in the manual though. Does anyone know what it does?
There is no documentation, but if I were to guess, (since it is close to the LED) it is likely for remote mounting a monitor, dual color, LED. This is just a guess not a statement!

Matt Leese 10-01-2005 16:14
Re: extra connector on breaker panel
 
Is this the connector for reporting tripped breakers to the control system?

Matt

ntroup 10-01-2005 16:26
Re: extra connector on breaker panel
 
From the "Guidelines, Tips & Good Practices" pdf on the 'Documents and Updates' section on the FIRST Site (page 21):

Quote:
Final note: The PWM socket is not used on this assembly. The DB9 connection can be used to send
CB Panel status information to the RC unit via the Program port connection on the RC.
So, it looks like it is currently un-used.

-Nate

coreyjon 10-01-2005 17:15
Re: extra connector on breaker panel
 
Good to know, I was wondering about that myself.

scitobor 617 11-01-2005 13:10
Re: extra connector on breaker panel
 
It would be nice to monitor the breaker during matches, is there a way to do that?

Mark McLeod 11-01-2005 13:19
Re: extra connector on breaker panel
 
Quote:
Originally Posted by scitobor 617
It would be nice to monitor the breaker during matches, is there a way to do that?
It's setup to read the breaker status in the default code if the breaker panel is connected to the RC program port.

Code:
if (aBreakerWasTripped)

{

  for (i=1;i<29;i++)

  {

        if (Breaker_Tripped(i))

          User_Byte1 = i; /* Update the last breaker tripped on User_Byte1 (to demonstrate the use of a user byte)

          Normally, you do something else if a breaker got tripped (ex: limit a PWM output) */

  }
}

jdiwnab 11-01-2005 13:20
Re: extra connector on breaker panel
 
It(the PWM port) may not be used with this set up, but could it be used? Could we control the panel or atleast see whats going on durring the match?

dez250 11-01-2005 14:41
Re: extra connector on breaker panel
 
Quote:
Originally Posted by jdiwnab
It(the PWM port) may not be used with this set up, but could it be used? Could we control the panel or atleast see whats going on durring the match?
This is not an offical statement from IFI but i would reccomend highly against connecting anything to that port this season. You do not know the circuitry for that pwm port and since IFI says its not for use this season what i would do is take a lil electrical tape or gaffers tape and cover over that port so by accident it is not used or damaged this year.

Joe Ross 11-01-2005 15:57
Re: extra connector on breaker panel
 
Quote:
Originally Posted by jdiwnab
It(the PWM port) may not be used with this set up, but could it be used? Could we control the panel or atleast see whats going on durring the match?
All of that is done via the serial port, not the PWM port. As Mark showed, the user program knows the complete status. That data is also sent to the dashboard, so you can see it real time during a match.

There isn't any reason, that I can think of, to try to figure out what the PWM port is used for, as everything we want is already provided.

ahecht 11-01-2005 20:58
Re: extra connector on breaker panel
 
Quote:
Originally Posted by Joe Ross
There isn't any reason, that I can think of, to try to figure out what the PWM port is used for, as everything we want is already provided.
If would be nice if the PWM port replicated the function of the LED, so that you could see if any breakers tripped on OI without having to using the serial port on the RC (since you might be using the serial port for something more important like a custom circuit).

CJO 11-01-2005 21:15
Re: extra connector on breaker panel
 
You could always come up with a system to integrate the output from the breaker panal into the digital I/O, or you could use the tether port for the second serial device. Also, there is the TTL port which is ostensibly for the camera, but you can make the camera run on the I/O if you really need to.

roboticsguy1988 11-01-2005 22:19
Re: extra connector on breaker panel
 
Yes you can connect it with a PWM this year. Any status can be viewed through dashboard. Go here for more info http://www.ifirobotics.com/circuit-breaker-panel.shtml, also, make note that the bottom of the page has a bit of information.

Doug G 11-01-2005 22:25
Re: extra connector on breaker panel
 
Quote:
Originally Posted by roboticsguy1988
Yes you can connect it with a PWM this year. Any status can be viewed through dashboard. Go here for more info http://www.ifirobotics.com/circuit-breaker-panel.shtml, also, make note that the bottom of the page has a bit of information.
Careful, what they're talking about in that document is the DB9 port which can be used in your program and through a properly configured dashboard port. I don't think they are talking about the PWM slot near the LED.

roboticsguy1988 11-01-2005 22:35
Re: extra connector on breaker panel
 
Quote:
Originally Posted by Doug G
Careful, what they're talking about in that document is the DB9 port which can be used in your program and through a properly configured dashboard port. I don't think they are talking about the PWM slot near the LED.
Ah, yes, your right, my bad. I went ahead and read through the reference guide. I automatically assumed it was the PWM connector just by reading the web page. Ok, so it uses the DB9 connector to do that. HMMMMMMM now i am curious as to what the PWM port is used for :confused: .

Joe Ross 13-01-2005 09:59
Re: extra connector on breaker panel
 
The question of the function of the extra connector is answered here: http://www.ifirobotics.com/forum/viewtopic.php?t=165

cinderblock 13-01-2005 22:14
Re: extra connector on breaker panel
 
I looked into the documentation for the breaker panel:

Section 4 of this PDF explains how to use the serial port.
http://www.ifirobotics.com/docs/brea...005-revnc0.pdf

The isometric view in this PDF states that it is an unused connector.
http://www.ifirobotics.com/docs/IFI-BREAKER-INSTALL.pdf

Hope this helped

Justin_302 14-01-2005 22:39
Re: extra connector on breaker panel
 
I am confused on how this years breaker works. Last years was VERY simple. They seem to be getting more complicated.

roboticsguy1988 14-01-2005 22:41
Re: extra connector on breaker panel
 
Quote:
Originally Posted by Justin_302
I am confused on how this years breaker works. Last years was VERY simple. They seem to be getting more complicated.
What are you confused about? I can try and help you if you need some. I actually have found it more simple than last years, but thats just me for you ;) .

Mike AA 15-01-2005 01:34
Re: extra connector on breaker panel
 
Does anyone, or has anyone, seen a way to detect the current with the new panel? Such as what the robot is drawing at the time. I have a 600 amp shunt which I had a thought about interfacing with the bot and watching the readings even if its just for testing.

-Mike

Al Skierkiewicz 16-01-2005 19:53
Re: extra connector on breaker panel
 
Quote:
Originally Posted by Justin_302
I am confused on how this years breaker works. Last years was VERY simple. They seem to be getting more complicated.
Justin,
I think this breaker panel is actually a little easier to use. Problems are sure to arise but I can't anticipate any at this point. After all, there are two more 40 amp breakers than we ever had before and additional smaller breakers plus the added benefit of telling if and which breaker is actually tripping.
The one thing I am concerned about ( and all of you should be as well.) is the soldered in push on tabs. These are not as roboust as last year's breaker panels so they cannot take mishandling. Team members should be aware that pulling at odd angles and wiggling to install or remove the connections may result in breaking the tabs off the board. Once everything is in place and working, be sure to secure all cables so that they do not break the tabs on the breaker panel. Our panel has pretty tight connections on the breakers themselves but I expect those to loosen up with use.
Mike,
In the past we have effectively used a one foot length of #10 to measure current. Search last years' posts for discussions on this subject as there many. A 12" #10 is very close to .001 ohms and using that and a Maxim battery monitor chip seemed to be a pretty easy way to monitor current.

kutty18 22-01-2005 11:19
Re: extra connector on breaker panel
 
Sort of off-topic, but has anyone weighed the Breaker Panel? We mounted ours to the robot, and we want to know the weight of the Panel? Thanks.

scifi3018 22-01-2005 12:22
Re: extra connector on breaker panel
 
So if the extra pwm port can be used instead of the db9 port, this is similar to the connections of the camera this year isnt it?


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