Sumo Bots B/C [Trial]

User avatar
paleonaps
Exalted Member
Exalted Member
Posts: 1282
Joined: March 7th, 2009, 7:14 am
Division: Grad
State: NY
Location: Turning and turning in the widening gyre

Re: Sumo Bots B/C [Trial]

Postby paleonaps » July 25th, 2010, 8:45 am

I'm more worried about the sheer scale of a Nationals sumo tournament. I'm not trying to get them to shut up, just to be a little more courteous.
I have never done sumo at nats, so I have no idea. It was just an idea, no need to jump down my throat about it.
Brown University 2017
2009 B Division National Ecology Champion
4 time National Medalist
Farewell Science Olympiad. We will meet again.

User avatar
lllazar
Member
Member
Posts: 839
Joined: November 19th, 2009, 7:20 pm
Division: C
State: IL
Location: Probably at my laptop, multitasking while on AJAX chat....

Re: Sumo Bots B/C [Trial]

Postby lllazar » July 25th, 2010, 9:03 am

Well think about it this way - these people that come to watch aren't just random strangers. They are the team-mates, coaches, and parents of the competitors. No matter who they are they have a reason to be quiet so that you don't "stress" out...a more important problem is cell phones and cameras. It'll be interesting to see wat happens about tha since Sumo Bots will probably have more spectators next year.
2011 Season Events~

Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)

Hooray for getting everything i wanted?

User avatar
paleonaps
Exalted Member
Exalted Member
Posts: 1282
Joined: March 7th, 2009, 7:14 am
Division: Grad
State: NY
Location: Turning and turning in the widening gyre

Re: Sumo Bots B/C [Trial]

Postby paleonaps » July 25th, 2010, 10:58 am

That's my primary concern- crowd control is minor compared to this, but they're pretty related. At 2009 states (I know I talk about this a lot) there were some people using cell phones to record and even talk through the bouts. It messed up my bot for a while. There will be no way for this to be controlled on the National level.
My suggestion. Set up a live feed to another area. The feed can show everyone what's happening, but there is no excessive crowd noise and no interference except for the one camera for the feed. At 2008 Nationals they had a projector screen for Robo-cross- just expand on the idea. They certainly have the resources.
Brown University 2017
2009 B Division National Ecology Champion
4 time National Medalist
Farewell Science Olympiad. We will meet again.

User avatar
lllazar
Member
Member
Posts: 839
Joined: November 19th, 2009, 7:20 pm
Division: C
State: IL
Location: Probably at my laptop, multitasking while on AJAX chat....

Re: Sumo Bots B/C [Trial]

Postby lllazar » July 25th, 2010, 2:07 pm

Good idea man.
2011 Season Events~

Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)

Hooray for getting everything i wanted?

User avatar
paleonaps
Exalted Member
Exalted Member
Posts: 1282
Joined: March 7th, 2009, 7:14 am
Division: Grad
State: NY
Location: Turning and turning in the widening gyre

Re: Sumo Bots B/C [Trial]

Postby paleonaps » July 25th, 2010, 7:06 pm

Thank you, and I have another idea: Instead of scraping robots being the norm, make a minimum ground clearance. That way pushing is more important than scraping.
It is Sumo-bot, not Spatula-bot after all.
Brown University 2017
2009 B Division National Ecology Champion
4 time National Medalist
Farewell Science Olympiad. We will meet again.

User avatar
lllazar
Member
Member
Posts: 839
Joined: November 19th, 2009, 7:20 pm
Division: C
State: IL
Location: Probably at my laptop, multitasking while on AJAX chat....

Re: Sumo Bots B/C [Trial]

Postby lllazar » July 25th, 2010, 10:09 pm

paleonaps95 wrote:Thank you, and I have another idea: Instead of scraping robots being the norm, make a minimum ground clearance. That way pushing is more important than scraping.
It is Sumo-bot, not Spatula-bot after all.


This is wat they do in real sumo-bot, this way you know whether someones off or not...
2011 Season Events~

Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)

Hooray for getting everything i wanted?

gh
Admin Emeritus
Admin Emeritus
Posts: 323
Joined: October 22nd, 2003, 5:47 pm
Division: Grad
State: NY
Location: CA
Contact:

Re: Sumo Bots B/C [Trial]

Postby gh » July 26th, 2010, 4:31 pm

I have an idea: sumo wrestlers should have both of their arms amputated. It's so unfair that they can use those limbs to get leverage over other wrestlers. This way, head-butting each other from a standstill is more important than maneuvering and devising strategies around frame strengths and weaknesses.

It's sumo wrestling, after all, not sumo wrestling.
“Rather fail with honor than succeed by fraud.” —Sophocles

If you are looking to give help or get help:
Wiki > Forum post > AJAX IRC Chat or Java IRC Chat > PM > Email
Don't forget the Image Gallery, the OBB Archive, and the list of Exalted User medals.

User avatar
paleonaps
Exalted Member
Exalted Member
Posts: 1282
Joined: March 7th, 2009, 7:14 am
Division: Grad
State: NY
Location: Turning and turning in the widening gyre

Re: Sumo Bots B/C [Trial]

Postby paleonaps » July 26th, 2010, 6:45 pm

OK, point taken. I think it would be more interesting than the wedge competition. I doubt it will change, but I hope it will.
Brown University 2017
2009 B Division National Ecology Champion
4 time National Medalist
Farewell Science Olympiad. We will meet again.

starpug
Admin Emeritus
Admin Emeritus
Posts: 932
Joined: April 5th, 2008, 6:51 pm
Division: Grad
State: ME
Location: Waterville, Maine
Contact:

Re: Sumo Bots B/C [Trial]

Postby starpug » July 26th, 2010, 7:10 pm

paleonaps95 wrote:OK, point taken. I think it would be more interesting than the wedge competition. I doubt it will change, but I hope it will.

Science Olympiad is about innovation, you can't do that when you are forcing competitors to all go down the same path.
Get your facts first, then you can distort them as you please. - Mark Twain

User avatar
paleonaps
Exalted Member
Exalted Member
Posts: 1282
Joined: March 7th, 2009, 7:14 am
Division: Grad
State: NY
Location: Turning and turning in the widening gyre

Re: Sumo Bots B/C [Trial]

Postby paleonaps » July 26th, 2010, 7:12 pm

OK OK OK Point taken. Not good to funnel people- got it.
Brown University 2017
2009 B Division National Ecology Champion
4 time National Medalist
Farewell Science Olympiad. We will meet again.

User avatar
ichaelm
Member
Member
Posts: 440
Joined: October 23rd, 2008, 3:10 pm
Division: Grad
State: PA
Location: CWRU, Cleveland, OH
Contact:

Re: Sumo Bots B/C [Trial]

Postby ichaelm » July 26th, 2010, 7:27 pm

I hope that isn't a rule next year, but who knows...

gh
Admin Emeritus
Admin Emeritus
Posts: 323
Joined: October 22nd, 2003, 5:47 pm
Division: Grad
State: NY
Location: CA
Contact:

Re: Sumo Bots B/C [Trial]

Postby gh » July 27th, 2010, 6:57 pm

As for electronic braking: yes, do it. All decent commercial motor controllers can do electronic braking by "shorting the motor terminals." This forms closed loops in the motor's windings (in the rotor for an plain-jane brushed DC motor), which resists change of magnetic flux (e.g. the rotor rotating in the field[s] of the permanent magnets surrounding it) by Lenz's law.

For various reasons, this will also cause brief, but sharp, voltage spikes as back-EMF from the motor, so I'd really recommend not building the motor controller yourself. This isn't because it's dangerous, as hobby motors don't have the winding inductance to store (and thus discharge) any unsafe amount of energy, but because it's not easy to build something that won't get fried every time you brake hard.
“Rather fail with honor than succeed by fraud.” —Sophocles

If you are looking to give help or get help:
Wiki > Forum post > AJAX IRC Chat or Java IRC Chat > PM > Email
Don't forget the Image Gallery, the OBB Archive, and the list of Exalted User medals.

User avatar
ichaelm
Member
Member
Posts: 440
Joined: October 23rd, 2008, 3:10 pm
Division: Grad
State: PA
Location: CWRU, Cleveland, OH
Contact:

Re: Sumo Bots B/C [Trial]

Postby ichaelm » August 3rd, 2010, 5:58 am

Thanks gh! I just finished building the signaling circuit, so all I have left is the motor driver. I breadboarded a simple one that worked fine with the motors I have now, but since I might get some more powerful motors in the future I think it would be best to take your advice.

gh
Admin Emeritus
Admin Emeritus
Posts: 323
Joined: October 22nd, 2003, 5:47 pm
Division: Grad
State: NY
Location: CA
Contact:

Re: Sumo Bots B/C [Trial]

Postby gh » August 3rd, 2010, 7:06 pm

By all means, keep working on it; it's a very good exercise and I expect that you can get some nice results. Good luck with the project!
“Rather fail with honor than succeed by fraud.” —Sophocles

If you are looking to give help or get help:
Wiki > Forum post > AJAX IRC Chat or Java IRC Chat > PM > Email
Don't forget the Image Gallery, the OBB Archive, and the list of Exalted User medals.

User avatar
ichaelm
Member
Member
Posts: 440
Joined: October 23rd, 2008, 3:10 pm
Division: Grad
State: PA
Location: CWRU, Cleveland, OH
Contact:

Re: Sumo Bots B/C [Trial]

Postby ichaelm » August 4th, 2010, 4:23 am

Thanks!


Return to “2010 Build Events”

Who is online

Users browsing this forum: No registered users and 2 guests