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  #16   Spotlight this post!  
Unread 24-04-2011, 22:22
dman14 dman14 is offline
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Re: Team Kika Mana 368 1.20 sec minibot

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Originally Posted by crazyStone View Post
In theory if you create small diameter shafts as rollers, you could, (not saying we have, because we didn't) gear the textrix motors up to 14,000 or 20,000 rpms, and given that the shaft size isn't so large that it burns out the motors you could theorticallly be looking at a .5-.7 second ascent. Now if only I had thought about it a few weeks ago, but oh well we shall be satisifed with our 1.4 second deploy and climb good luck to you all at st. louis.
Take a look at the wattage (joules per second) of your motors, and at the required energy (joules) to climb the tower (Mass x Distance x Force of Gravity) and the theoretical best climb time is somewhere in the range of 1 - 1.5 seconds, smaller shafts help to a point, but then you begin to go slower due to less power. Theres a couple of threads that explain it better than myself if you take a look.

If only a .5 second climb time were possible
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Unread 24-04-2011, 23:20
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Re: Team Kika Mana 368 1.20 sec minibot

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Originally Posted by The Lucas View Post
It would be awesome to walk out to on the field, pull the minibot out of cooler with fog flowing all around (smoke machine )and load it into the robot.
That would be beyond awesome, but it doesn't fit with "Logomotion". Hold that thought for next year's "Smoke on the Water" theme.
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Unread 24-04-2011, 23:58
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Re: Team Kika Mana 368 1.20 sec minibot

Hi All,

Just a small correction to our first post, we are actually using a RGB color sensor instead of a photoresistor and are looking for the final change from blinking yellow to solid Red or Blue. If anyone is curious, one of our team members can probably answer questions, as I am the mechanical guy. As Osa mentioned, thank you Team 987 for the inspiration to try and automate our deployment its the basically the same idea, but a slightly different path.

The 1.2 seconds is from the moment we release the minibot, which includes both deployment and time on the pole. We are using video to measure the time and get about 36 frames consistently with fully charged batteries. On occasion, we are able to get 35 frames, but its safer to go with the higher figure.

233, your recent autonomous video left us speechless! We originally ruled out a ramp deployment, but after watching the webcast of one of your matches changed our minds and thought we'd have a go at it which turned out to be a lot simpler than our original design.

We do not claim to have the fastest minibot and know that there are faster minibots/deployment systems than. With so many quick minibots, I believe that it will actually come down to who can initiate deployment the quickest without jumping the gun.

Looking forward to seeing you all!
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Unread 25-04-2011, 03:00
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Re: Team Kika Mana 368 1.20 sec minibot

Kudos to 368 for an awesome, reliable minibot and deployment.
The fact that you folks had it (for the most part) by week 4 at the Hawaii regional and your first tournament was impressive.

Like always, you folks always build great robots, and will again make eliminations in Curie even before CMP begins.

See you folks there!
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Unread 27-04-2011, 06:00
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Re: Team Kika Mana 368 1.20 sec minibot

Thanks everyone! There was a point sometime in the last few weeks where the minibot has been worked on more than the regular bot. What a crazy long build season. But it's all good! Should also mention that we've seriously improved a lot of things since the Hawaii Regional - now able to score much much quicker and more reliably and a lot of work put into auto mode among other things.

Let the games begin!!
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  #21   Spotlight this post!  
Unread 27-04-2011, 12:07
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Re: Team Kika Mana 368 1.20 sec minibot

Quote:
Originally Posted by Alan Ing View Post
Hi All,

Just a small correction to our first post, we are actually using a RGB color sensor instead of a photoresistor and are looking for the final change from blinking yellow to solid Red or Blue. If anyone is curious, one of our team members can probably answer questions, as I am the mechanical guy. As Osa mentioned, thank you Team 987 for the inspiration to try and automate our deployment its the basically the same idea, but a slightly different path.

The 1.2 seconds is from the moment we release the minibot, which includes both deployment and time on the pole. We are using video to measure the time and get about 36 frames consistently with fully charged batteries. On occasion, we are able to get 35 frames, but its safer to go with the higher figure.

233, your recent autonomous video left us speechless! We originally ruled out a ramp deployment, but after watching the webcast of one of your matches changed our minds and thought we'd have a go at it which turned out to be a lot simpler than our original design.

We do not claim to have the fastest minibot and know that there are faster minibots/deployment systems than. With so many quick minibots, I believe that it will actually come down to who can initiate deployment the quickest without jumping the gun.

Looking forward to seeing you all!
I'd be really interested in what sensor you used. I'm not going to St. Louis this year unfortunately or I'd just stop by the pit.
(btw, my vex team 918 picked you guys (368e) last year in the vex clean sweep championships!)
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