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Unread 01-02-2008, 18:52
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Hyper 69 driving video

Here's a video we just recorded today, http://www.youtube.com/watch?v=U72MSfmUtoo
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Unread 01-02-2008, 19:00
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Re: Hyper 69 driving video

wow if you guys can control that back end kicking out that will really help you turn.
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Unread 01-02-2008, 19:58
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Re: Hyper 69 driving video

You are going the wrong way

Looks good though
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Unread 01-02-2008, 20:04
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Re: Hyper 69 driving video

is that car steering by any chance?? nice vid though, you got some speed!
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Unread 01-02-2008, 20:25
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Re: Hyper 69 driving video

Yes it is like car steering. It is called quadrasteer and we are workin to make it have better control.
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Unread 01-02-2008, 20:56
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Re: Hyper 69 driving video

Remember loose is fast. With a lot of practice you will be able to use it to your advantage and fly around the track. It's harder to drive but can be much faster.

Nice job.
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Unread 01-02-2008, 21:54
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Re: Hyper 69 driving video

Great speed!

Also, when i watch this video, the following plays in my head: "This looks like a job for gyro auto-stabilization!"

If you let your programmer(s) chew on it and you might be surprised what they come up with.

The robot is moving so fast in the video I can't make out what's steering your robot? What kind of motor? Guessing your PID'ing it to a position?

-q
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Unread 01-02-2008, 22:57
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Re: Hyper 69 driving video

So both the front and back wheels are turning in opposite directions to give a tighter turning radius? Is it like those trucks from a couple years back? I can't remember who made them...

I'm sure with more weight from the manipulator the drift won't be nearly as bad. Can't wait to see exactly how it works!
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Unread 01-02-2008, 23:00
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Re: Hyper 69 driving video

No pid yet, I do plan on implementing one though. I don't know about using a gyro for control, I would have to think that one though. We were going about 40% full speed. It was unstable because of the lack pid on the steering. But has anyone notice that the victor are uneven, like in one direction there's slightly less power than if it was going in the other direction with the same amount of difference from neutral, 127.

Edit: I just realized I could use the gyro to keep it going parallel with the length of the field. Thanks for the idea Q.

Last edited by baop858 : 01-02-2008 at 23:07.
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Unread 01-02-2008, 23:04
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Re: Hyper 69 driving video

Yeah, that will happen. What you need to do is create a function that will cut the speed down by a percentage, and put it on the motor that goes faster. It takes a while because you need to just guess and check, but trust me, in the end its worth it.
Joey
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Unread 01-02-2008, 23:05
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Re: Hyper 69 driving video

Quote:
Originally Posted by baop858 View Post
No pid yet, I do plan on implementing one though. I don't know about using a gyro for control, I would have to think that one though. We were going about 40% full speed. It was unstable because of the lack pid on the steering. But has anyone notice that the victor are uneven, like in one direction there's slightly less power than if it was going in the other direction with the same amount of difference from neutral, 127.
What is your projected "full" speed?
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Unread 01-02-2008, 23:09
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Re: Hyper 69 driving video

Quote:
Originally Posted by Rex114 View Post
So both the front and back wheels are turning in opposite directions to give a tighter turning radius? Is it like those trucks from a couple years back? I can't remember who made them...

I'm sure with more weight from the manipulator the drift won't be nearly as bad. Can't wait to see exactly how it works!
I remember seeing those commercials, oh I miss the days when I time to watch TV. I think it was Ford?
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Unread 01-02-2008, 23:10
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Re: Hyper 69 driving video

Quote:
Originally Posted by Tapoore View Post
What is your projected "full" speed?
I think it was 10 fps at 120 lbs.

Last edited by baop858 : 01-02-2008 at 23:18.
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Unread 02-02-2008, 00:15
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Re: Hyper 69 driving video

you should test your driving on carpet
and take in to account that there are going to be other bots on the field while driving. Your statagy might be speed but other bots might be very slow so you need to learn how to steer better.
try to program your controler to be less sensitive.
also try some omni wheels if you have a problem with turning
nice bot
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Unread 02-02-2008, 01:43
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Re: Hyper 69 driving video

Quote:
Originally Posted by CCCP View Post
you should test your driving on carpet
and take in to account that there are going to be other bots on the field while driving. Your statagy might be speed but other bots might be very slow so you need to learn how to steer better.
try to program your controler to be less sensitive.
also try some omni wheels if you have a problem with turning
nice bot
Umm I'm pretty sure that was on carpet. If it was his first time driving then yea, he should learn how to steer better. Omni's wouldn't really work with quadresteering.


I like it a lot. I can't believe that's only 10 fps. You were zipping around the track like crazy (and losing like 150 points in the process for penalties for going backwards [yes I know you know you were going backwards]).
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