Re: 1000 assist points and we could have done more
 

I don't believe Chris is referring to the red button physically being pressed. The only protection from that is the location of the breaker.

Some breakers either have or develop a sensitivity to vibration/impacts. To identify if this is the case, turn on the robot and begin tapping on the breaker housing particularly around the actuation lever including gently tapping the red button. If you are able to cause the lights on the robot to flicker you may have a sensitive breaker. Everybody's definition of lightly is a little different, especially if you've never seen this problem before, so you may want to ask a team around you if you can try it on their 'bot as a reference.

Re: 1000 assist points and we could have done more
 

1. Bricks on wheels can make great 30 point cycle robots. It takes a lot of work before the match.

2. We did have fantastic alliance partners in many of our matches, we were excited to play with each one of them and put up some great scores with each one of them!

3. We brought a skeleton crew to SVR, and 604 already had the webcast covered, so we didn't broadcast at the event. Thank you for the kind words on our streaming system, the kids worked hard to put it all together! Glad you enjoyed it.

-Mike

Re: 1000 assist points and we could have done more
 

I really enjoy 1678's HD webcasts. Thanks for doing IE and SAC!

At SVR, we were testing out a proof-of-concept auto archiving system (the same one from CVR) which, unfortunately, uses the low quality feed from the A/V crew. Higher quality streaming and archiving is definitely at the top of our list.

Re: 1000 assist points and we could have done more
 

I love the auto archiving you guys got going on! Let us know if we can help with setting up the HQ stream details, and then maybe you can help us with auto archiving? ;)

Re: 1000 assist points and we could have done more
 

You could consider actively cooling drive motors. I know that it really helped us last year, in both practice and elimination scenarios.

Re: 1000 assist points and we could have done more
 

yeah three cycles are Deffinetly the way to go you just Gotta find the quickest way to do it

Re: 1000 assist points and we could have done more
 

Jake,

We had main breaker issues at Waterford due to overheating and high current on our machine. We died in the final match when our driver was playing defense in high gear.

At Lansing we implemented an autoshift function to downshift when the expected wheel speed does not match actual (simplified explanation ofcourse). We also added a small muffin fan under the breaker, blowing directly onto the bi-metal element.


When you guys were doing your pre-match work with your alliance partners, were you modifying their robot or just detailing exactly how you wanted to execute the assists? Sometimes I feel like I am speaking another language during strategy sessions, based on in-match results. Just trying to understand what else might work to ensure we can involve all alliance members and still succeed on the field.

Could just be that I am not patient enough during the match.

-Adam

Re: 1000 assist points and we could have done more
 

Adam,

Definitely both. Some machines come ready to create assists, some take slight tweaks to make their robot assist-ready, and others require a completely new mechanism to make assists happen. We spent many hours in our lab developing an effective assist-maker to implement on many different styles of robots. After installing the device, a completely passive system, we get our partner re-inspected before our match. We used this in one of our qualification matches at SVR to get 80 assist points in what would have been a 50-60 point assist match if we were rocking 10 assist points a cycle.

I find myself explaining the seeding system often, but it's definitely worth it. Teams get on board with making assists when you explain that is in their best interest to get assist points and rank high (many teams wants to rank high even if they won't be in the top 8).

Many assist-ready robots still need to be taught how exactly to make assists happen. My biggest pet peeve is when an inbounder passes to the second bot in the first zone, and the second robot trusses to the third robot before driving completely into the white zone.

Also, I hardly ever coach my own drive team in qualifications :p

-Mike

Edit: Also, it is worth noting that all of this is possible because the students on 1678 went through many iterations of our passive assist-maker before the event. Additionally, I never have to worry about our robot because the students in our pit diligently prepare/fix/systems check the robot between every match. To top it off, like Jake said, we have a team of mentors and students dedicated to robot modifications/alliance member support. Reaching 1000 assist points truly was a team effort, I couldn't be more proud.

Re: 1000 assist points and we could have done more
 

Adam,

We added features to robots and helped modify/remove features and tweak them before our matches at Troy. Also, typically I would spend a lot of time coaching them from behind the glass. Telling them when to move when the assist was counted.

See the following matches and teams:

Match 31 - Team 1914: http://www.youtube.com/watch?v=zdrkuiIwN08

Match 71 - Team 4815: http://www.youtube.com/watch?v=KZmdndPGj20

Match 75 - Team 3398: http://www.youtube.com/watch?v=k9X1DyO6kpY

We ended up with 870 assist points (had 920 before the match 62 replay), which was the only reason we ranked number 1. The next highest assist points was 3539 with 760.

Joe,

That was part of our addition for team 1941, in a previous match a ball hit their main breaker. See match 31 (above) where it was added.

-Clinton-

Re: 1000 assist points and we could have done more
 

Truly fantastic strategy work. I'm sure it will serve you well at champs and is exactly the kid of thing the GDC was hoping this game would inspire. Got any pics of this passive assist device? I'm pretty curious about it.

Re: 1000 assist points and we could have done more
 

I know, I was asking about ways to prevent the breaker from disconnecting from being shaken/vibrated. Preventing the red off switch from being hit is a simple repositioning of the breaker.

Re: 1000 assist points and we could have done more
 

I've always wondered about the legality of some physical means of keeping the breaker closed or resetting it in case of a main breaker trip.

By the way, I'm beginning to think the main breaker should be bumped up in rating from 120 to 150 or 180 amps. While I'm not the electrical expert that some on this forum are, I have a hard time seeing what could get damaged (that's not already protected by a breaker on the PDB or somewhere else) at 180 amps but not at 120 amps. Especially if the era of 6 CIM drives is to continue, teams should be able to compete without the specter of a main breaker reset hanging over their heads.

Re: 1000 assist points and we could have done more
 

This is the same thought I had after watching the last finals match. At least two teams on the field were running 6 cim drivetrains because they've become the new high performance standard in FRC. I don't see how First can give us this many cims, and mini-cims, and banebots motors, and anymark motors, and then not expect us to start putting 6 cims on the drivetrain.

33 posted this thread http://www.chiefdelphi.com/forums/sh...d.php?t=125187 a while back that talks about this with far more knowledge than I posses on the subject. But the bottom line is that all the current on an FRC robot goes through a 50 amp connector and a 120 amp main breaker. Either we need to have less amperage available to us, or upgrade to a higher amperage standard on both these components. As it is we're seeing far too many main breaker trips in situations where the cims and the wires attached to them are in no real danger.

Re: 1000 assist points and we could have done more
 

Please tell us what you need to help make Powerhouse Pwnage a huge success! Thanks for putting it on.

Re: 1000 assist points and we could have done more
 

Does the breaker have sufficient air flow to cool off in that configuration?