19-01-2007 08:28

jcatt

Re: pic: XBot 2007 electronics panel

Very Nice. Looks good. I like the way you are saving weight by cuting out the center of the speed controlers. May i ask what type of material your using to mount everything to.

19-01-2007 08:35

Fred Sayre

Re: pic: XBot 2007 electronics panel

It is ABS 1/4" plastic. We might still take some weight out of it, if we have time to take the electronics off and cut it before the panel is needed on the robot.

19-01-2007 08:49

mtaman02

Re: pic: XBot 2007 electronics panel

I like the neatness of the wiring. No access wiring to get caught up in the moving parts of your robot or someone elses. Plus the amount of weight your saving by cutting the excess wiring.

19-01-2007 09:30

Fred Sayre

Re: pic: XBot 2007 electronics panel

Every year that I been on a team the wiring was dealt with as a last priority, causing many unexpected failures that were very difficult to diagnose and fix. We finally decided that we would do it right this year

I will post a picture when the board is more finalized.

Thanks!

19-01-2007 10:33

Al Skierkiewicz

Re: pic: XBot 2007 electronics panel

I like the short runs of #6 and the central location of the blocks and Main breaker. The output of the main breaker must feed the distribution blocks before the fuse panels per the wiring diagram and Tips and Guidelines and

<R57> The 12V battery, the main 120-amp circuit breaker, the power distribution block, and circuit breaker distribution panels must be connected as shown in the 2007 Power Distribution Diagram.

19-01-2007 10:48

Fred Sayre

Re: pic: XBot 2007 electronics panel

Thanks, and yes - we were already discussing whether that was acceptable or not. Thanks for pointing out the specific rule though!

19-01-2007 10:50

Al Skierkiewicz

Re: pic: XBot 2007 electronics panel

Anytime!
Glad you were able to catch it early.

19-01-2007 15:25

GMKlenklen

Re: pic: XBot 2007 electronics panel

what fasteners are required for mounting the electrical hardware to a flat panel? Is it provided in the KOP?

19-01-2007 15:27

Joel J

Re: pic: XBot 2007 electronics panel

How much does your electronic panel weigh, with all the victors, and etc?

19-01-2007 16:15

Fred Sayre

We are just using standard #8-32, #10-32, and 1/4"-20 bolts for mounting, and zip ties for the speed controllers. It is stuff not generally supplied. (I know there are zip ties in the KOP, but I am not sure about any other appropriate hardware).

We will weigh it tonight...

19-01-2007 16:30

dtengineering

Re: pic: XBot 2007 electronics panel

Looks nice... I've found that #8 nylon machine screws and nuts save some weight over steel screws and also provide one less conductive surface to short out to.

See you in Portland.

Jason

19-01-2007 18:11

skimoose

Re: pic: XBot 2007 electronics panel

Very nice job. I just wish they'd come up with something better than the maxi block for the 40 amp circuits. It's the most ridiculously heavy breaker block I've ever seen. I think the 4 position maxi block weighs more than the entire '05-'06 IFI breaker panel. I don't know why more teams didn't use the IFI panel (other than size, which wasn't that bad, and maybe too many 20-30 amp circuit slots).

Wouldn't it be nice if they came out with the DIN rail product to accept the breakers? That would kill two birds with one stone, and I think the DIN rail is even lighter than the maxi blocks and it's handling the entire 120 amp load.

19-01-2007 21:19

Jeremytice

Re: pic: XBot 2007 electronics panel

Very nice you guys!

20-01-2007 19:41

Sharkbyte

Re: pic: XBot 2007 electronics panel

For each of the four victors you have a single wire coming out of the DIN block ports. You can combine them:

Battery Power Distribution Terminal Strip Manual:

30-01-2007 22:27

Japper

Re: pic: XBot 2007 electronics panel

I like it... it is clean and looks nice!

Can we use any material for the electronics mounting board?

Also, is it necessary to add any dampers to limit any vibration or is this not an issue?

I am also considering using the 1/4" ABS plastic as well but wanted to make sure that there isn't any rules against using it.

thanks!

31-01-2007 08:14

Al Skierkiewicz

Re: pic: XBot 2007 electronics panel

Japper,
Nothing in the electronics is so fragile that it can't take a hit from another robot. There are things you do want to make sure are secure. The battery musst be mounted in such a way that it won't fly out in a crash with another robot. The PWM cables have a tendency to pull out if you don't tie them into position. We usually just loop the cable out of the device and tie wrap it to the mounting board next to the device. This goes for both ends, RC and Victor, Spike or servo. The power cables, if left to flop around, will loosen at the screw terminals of the Victors so tie those down as well. Time will tell if the terminal blocks will stand up to the vibration of matches. I am recommending that teams check the tightness of each one in the pit between matches.

01-02-2007 09:35

Japper

Re: pic: XBot 2007 electronics panel

Thanks Al-

Is there a rule of thumb regarding how much of the robot should be covered in Lexan to protect parts and besides the electronics panel, which areas should have this type of protection?

01-02-2007 10:36

Rich Ross

Re: pic: XBot 2007 electronics panel

Is there any chance at seeing an updated version of this panel? I know you said it was going off to be weighed, so im guessing it is completed by now. It appears very efficient and neat, and I hope that it meets your requirements well.

01-02-2007 10:39

Al Skierkiewicz

Re: pic: XBot 2007 electronics panel

There is no robot rule for lexan coverings. It is up to the individual teams as to how much they want or can use with regards to weight since all nonfunctional decoration is included in the weight. We generally enclose most of the robot with either thin Lexan or punched aluminum. The Lexan is a good base for our stick on Wildstang decor and team numbers and is attached with Velcro to allow us access for repairs. The punched aluminum is riveted to the robot frame and is used to mount electronic and pnuematic parts. It is easy to mount these objects with ty wraps or hardware as needed.

01-02-2007 10:41

NeedMoreEngines

Re: pic: XBot 2007 electronics panel

What did you with the victor fan wires? do they go the speed controller power contact? we've always just sent them right to the circuit panel thing. is there an easier (shorter, really) way to do it?
if there is can you let us know?

01-02-2007 10:46

Al Skierkiewicz

Re: pic: XBot 2007 electronics panel

Mike,
I recommend teams wire the fans in parallel with the power input to the Victors. this is allowed under the rules and it is an easy indication that the Victor is getting power. You can shorten the wires leading to the fan and this will neaten up the wiring.

01-02-2007 11:15

GMKlenklen

Re: pic: XBot 2007 electronics panel

yah, but fans have a tendency to die and short out... I wire all mine to a seperate 20amp circuit breaker... if only i could get like a 5 amp or something.

01-02-2007 11:45

Fred Sayre

Re: pic: XBot 2007 electronics panel

The board came out to be about 7lbs with everything except the four remaining victors. The kids were half way through finishing the wiring up for those on tuesday and should finish tonight. If they do, I will post another picture.

This is what we did. We shortened the fan wires, and rotated the fans so that the wires go directly down to the power inputs to the victors. It is way easier and makes things much cleaner.

I have never had this happen to any fan on any machine I have ran in the past four years. Was there any specific circumstances that caused these failures?

01-02-2007 12:20

Al Skierkiewicz

Re: pic: XBot 2007 electronics panel

There is no reason for the fans to die dependent on where they are wired. You do need to watch polarity and you must not wire them to the Victor outputs, power input only please.

02-02-2007 15:17

GMKlenklen

Re: pic: XBot 2007 electronics panel

well now I feel sorta cheesy...
but anyways, If these fans are anything like computer fans, they can randomly die.

03-02-2007 11:19

Molten

Re: pic: XBot 2007 electronics panel

I noticed you were not using any relays. You might want to consider this based on your overall design. The setup does look nice and organized.

03-02-2007 11:23

RedHeadRobotics

Re: pic: XBot 2007 electronics panel

The layout of the components is really neat. But I would worry that the wires the the VIC motors would be too small and would melt if the current was too strong.

03-02-2007 23:06

Fred Sayre

Re: pic: XBot 2007 electronics panel

Believe me, we have considered at great length the use of relays. Mostly because that generally means for us that we would be using pneumatics. We might end up with a relay added for a motor if we can't utilize a servo for a mechanism to raise our lifts.

The wires on the victors are the standard gauge as prescribed by the first rules. We have used it every year without problem.


Also check the pictures section... I will be uploading some updated stuff shortly.

03-02-2007 23:32

seanl

Re: pic: XBot 2007 electronics panel

did u guys use 10 gauge wire for the vics?

06-02-2007 16:18

Team2002

Re: pic: XBot 2007 electronics panel

Hello Everyone,

1) Whats the best place to mount the robot controller?

2) Whats the best way to mount the OI and joysticks?

Thanks,

Team 2002

14-02-2007 00:28

Sharkbyte

Re: pic: XBot 2007 electronics panel

1.) Depends on your robot, just make sure the lights are visible to the inspectors

2.) Several ways
Extruded aluminum: highly modular and very shiny, but gets pricy
Plexiglass: looks good and is relatively cheap, but reinforce it some way, as long sheets tend to flex (this is what we made our board out of last year)
Wood: Cheap, easy to work with, sturdy (go with 3/4" thickness), though you loose the "shiny factor" (we chose to make our board out of wood this year)

When mounting joysticks an control box, we use Velcro strips so components can be rearranged for transportation. (if you do this, don't skimp on the Velcro, because you don't want anything falling off during the excitement of competition) As for the OI, we just bolt it down.