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-   -   Hyper 69 driving video (http://www.chiefdelphi.com/forums/showthread.php?t=63067)

baop858 01-02-2008 18:52

Hyper 69 driving video
 
Here's a video we just recorded today, http://www.youtube.com/watch?v=U72MSfmUtoo

DarkFlame145 01-02-2008 19:00

Re: Hyper 69 driving video
 
wow if you guys can control that back end kicking out that will really help you turn.

Wayne Doenges 01-02-2008 19:58

Re: Hyper 69 driving video
 
You are going the wrong way :ahh: :ahh: :ahh:

Looks good though

T3_1565 01-02-2008 20:04

Re: Hyper 69 driving video
 
is that car steering by any chance?? nice vid though, you got some speed!

VinW 01-02-2008 20:25

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.

IndySam 01-02-2008 20:56

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.

Qbranch 01-02-2008 21:54

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

Michael Corsetto 01-02-2008 22:57

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!

baop858 01-02-2008 23:00

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.

Laaba 80 01-02-2008 23:04

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

Tapoore 01-02-2008 23:05

Re: Hyper 69 driving video
 
Quote:

Originally Posted by baop858 (Post 690514)
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?

baop858 01-02-2008 23:09

Re: Hyper 69 driving video
 
Quote:

Originally Posted by Rex114 (Post 690511)
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?

baop858 01-02-2008 23:10

Re: Hyper 69 driving video
 
Quote:

Originally Posted by Tapoore (Post 690517)
What is your projected "full" speed?

I think it was 10 fps at 120 lbs.

CCCP 02-02-2008 00:15

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

Jaybee1405 02-02-2008 01:43

Re: Hyper 69 driving video
 
Quote:

Originally Posted by CCCP (Post 690546)
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 :P [yes I know you know you were going backwards]).


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