pic: Things you couldn't do again if you tried

[traxxasracr1]

loading photo ...

[bkahl]

Literally couldn't have done it again...


This wouldn't happen on a real field

[dirtbikerxz]

Originally Posted by bkahl

Literally couldn't have done it again...


This wouldn't happen on a real field

There was a match at IRI where it happened: https://www.youtube.com/watch?v=c4WFg6hYcPY

Look at 1619 during AUTO on the blue alliance

[TheBoulderite]

Originally Posted by dirtbikerxz

There was a match at IRI where it happened: https://www.youtube.com/watch?v=c4WFg6hYcPY

Look at 1619 during AUTO on the blue alliance

That's right! I forgot we did that.

[CptAmerica1776]

In one of our matches on Newton, the auto mode was set to go over a floor defense and the robot was lined up in front of the Cheval. I didn't have time to reload the robot code because they were counting down when I realized that the auto mode was set wrong. I don't know how, but we went over the Cheval by ramming it, doing a wheely, and landing on the front end. I wish that there was better video. We are the tall robot in red in the middle. https://youtu.be/m6kLidMNyC8?t=13

[Whippet]

We balanced on the Cheval de Frise during autonomous mode once. I don't think we'd ever be able to replicate that.

https://www.youtube.com/watch?v=ZOjvbBBx7iM

[dtengineering]

It was 2007... second match of the tournament in Portland. Our chance to show off our awesome autonomous in front of a row of judges and a packed stadium.

We'd spent the practice day replacing the soft carrier plates in the KoP transmissions that year as they had failed while we were developing the PID code for the mecanum drive. (All you script kiddies using a cRio to do it with a pre-programmed routine in LabView... hah! Try doing it from scratch on the old controller.) The ultrasonic sensors in the front had worked in the shop, and the plan was to drive to the tower, square up, roll in, and release the tube. Sure, we hadn't had a chance to try it in practice on a real field, but it worked at home....

I'm not saying that we'd WANT to do it this way again, but we couldn't if we tried. http://www.thebluealliance.com/match/2007or_qm2

Jason

[NShep98]

I'm just gonna leave this here https://youtu.be/tV3PWbEDIRc?t=29s

[Jared]

https://www.youtube.com/watch?v=Q5nnGGRi-94

[JohnBoucher]

Originally Posted by Jared

https://www.youtube.com/watch?v=Q5nnGGRi-94

Without a doubt the the finest example of coopertition ever

[adciv]

Originally Posted by dtengineering

(All you script kiddies using a cRio to do it with a pre-programmed routine in LabView... hah! Try doing it from scratch on the old controller.)

For some reason that routine never worked for us. So we always do it from scratch instead.

But related to PIDs... This year we had a 6 pneumatic wheel tank drive. We were tuning the PID and the robot started oscillating back and forth, and due to some of the motions, started walking side ways. We've got those PID values saved and would try it out more if it weren't so hard on the drive train.

[tr6scott]

Arial Assist - Kettering Kickoff off season event.

http://youtu.be/rOIcpDOKF78

Auto mode we are the blue bot in the middle.
We miss the first auto shot, catch the ball and shoot it again, and make it.

[PAR_WIG1350]

Originally Posted by adciv

But related to PIDs... This year we had a 6 pneumatic wheel tank drive. We were tuning the PID and the robot started oscillating back and forth, and due to some of the motions, started walking side ways. We've got those PID values saved and would try it out more if it weren't so hard on the drive train.

Sounds like your Z-domain poles escaped from the unit circle. If it weren't for the limits imposed by the motors, the controllers, and the battery, it would probably be even more violent.

[adciv]

Originally Posted by PAR_WIG1350

Sounds like your Z-domain poles escaped from the unit circle. If it weren't for the limits imposed by the motors, the controllers, and the battery, it would probably be even more violent.

If I'm remembering my controls correctly, an escape would send it unstable. We were astable and therefore on the unit circle.

[jimv]

In a practice match at the OC regional our auto messed up and accidentally shot another team's camera tower. A few seconds later the team whose camera was shot pulled it down and started to fiddle with it.