1565 Video "Twitch"
 

This is our 2008 bot "Twitch" with our new "linkage" drive system.

http://youtube.com/watch?v=f6PKY8SyvDM

Any comments or questions are welcome.


p.s. the auto mode in the video is running at 25% power because we don't have any space to drive it lol

Re: 1565 Video "Twitch"
 

I LOVE THAT! LOVE IT LOVE IT LOVE IT

so innovative.

can we have some pictures!? (like detailed ones)

Re: 1565 Video "Twitch"
 

Very nice, I look forward to competing with (or against) you guys in both Waterloo and GTR.

It was need to see some video of our... umm.... learning experiance of a robot from last year.

And just to prove great minds think alike. Your bot is so similar to ours, its almost scary.

Re: 1565 Video "Twitch"
 

That is definitly one of the most impressive drive trains i have every seen!!! I congragulate you and your team!

Re: 1565 Video "Twitch"
 

thank you very much pictures should be up shortly (if not now) if you have any questions on how it works ask away, Hope to become quite the hit in the canadian regionals, as we were not a well know team for a while! (this is why we invented the drive system lol)


See you in 4 weeks!!

Re: 1565 Video "Twitch"
 

does anyone know how to change the title of the thread?? It would be nice to know, and I have seen people do it before lol

Re: 1565 Video "Twitch"
 

really REALLY awesome. top notch work guys. I love how when you switch directions, if you didnt slow down is still goes an extra foot or so, and it looks like you all mastered that power slide.

Re: 1565 Video "Twitch"
 

:ahh: :ahh: Very cool, I really hope you guys get to go to championships so I can see it up close

Re: 1565 Video "Twitch"
 

Is it just me or every single robot that is named "Twitch" is plain awesome? =)

Re: 1565 Video "Twitch"
 

Most impressive. Highly innovative. But I have a question, how much air do you use, do you think it'll ever be a problem during a match?

Re: 1565 Video "Twitch"
 

at most it uses 30 psi per switch, and that is with the regulator set at 60psi (max) It can switch fairly easily with the regulator set at 30, so we have room to go down in case we need more switches than we thought, but through all the testing we did, I never once had to wait for the air to build up

Re: 1565 Video "Twitch"
 

How hard is it to double/triple twitch, such as what would be needed to dodge a hurdler and then another robot a few yds ahead? I'm curious about the linkage stress and air stress. I noticed in the video that the bot didn't twitch as full speed.

It's still an amazing drive train since it has many luxuries of both holonomic and skid drive combined. I'd love to see a Matlab simulation graph of your drive code; I'm sure the 3D map of the joystick inputs vs motor outputs would look pretty wicked.

Re: 1565 Video "Twitch"
 

it double/triple "twitchs" fine, the only reason we did not drive at full speed was because we were in the library and We had to be careful. any stress that is placed on the linkage is spread out throughout the frame of the robot, as the linkage floats between the two frames. And it can switch 4-5 times in a row (as fast as I can push the two buttons) before air runs out

Re: 1565 Video "Twitch"
 

honestly, the joystick outputs aren't that impressive (i programmed it).
see my post in this thread :

http://www.chiefdelphi.com/forums/sh...threadid=65067

Re: 1565 Video "Twitch"
 

GENIUS IDEA! I would have never thought of using two wheels to bring the ball in, AND hurdle it at the same time. My jaw dropped. Excellent work!

Re: 1565 Video "Twitch"
 

Really cool, but wouldn't it be easily pushable with those 90 degree omnis? Are you worried at all about getting shoved out of the way as you make your turns?

Re: 1565 Video "Twitch"
 

no not really cause we can switch the wheels back so we no longer get pushed, that and pushing isn't nice lol :D

Re: 1565 Video "Twitch"
 

amazing.. can't wait to see it at Waterloo and GTR, i'm predicting an award for this maybe the xerox creativity award

Re: 1565 Video "Twitch"
 

Love it!

I love seeing teams who think outside the box like this... It's wonderful!

Re: 1565 Video "Twitch"
 

Thanks!! We are hoping for an award!! any award would be sweet!

See you all in Waterloo and Toronto!

Re: 1565 Video "Twitch"
 

my prediction was right :), congrats on the award see you guys this weekend

Re: 1565 Video "Twitch"
 

lol, indeed it was!!

Thanks and see you in a few days! (I'm the guy on the team with the oktoberfest hat and the gaint feather)

Re: 1565 Video "Twitch"
 

That's an amazing drive train! Do you have any shots of the underside? I imagine hybrid mode would be pretty easy with zero-turn-radius 90 degree turns like that!

Re: 1565 Video "Twitch"
 

There's an underside shot here:
http://www.chiefdelphi.com/media/photos/30720

I know from watching that 1565 was capable of a 5-line autonomous using only timing in the autonomous code. No sensors, no crazy complexity, just timing.

Edit: Picture bigger than 100x100!

Re: 1565 Video "Twitch"
 

lol i wish there was sensors, because the timing took a long time to perfect, and if we even rubbed against another robot we'd most likely go off course and eventually cross over a line the wrong way..

Re: 1565 Video "Twitch"
 

Wow, thanks for the underbelly shot. I'm still astounded at that design. Are you going to the Championships? You'd almost definitely win a design award there!

Re: 1565 Video "Twitch"
 

no, unfortunately we aren't...at both waterloo and toronto regionals we were semifinalists and we lost both times to 1114 and 2056. as far as awards, we wont the Xerox creativity award at Waterloo, and the Rockwell in control award at Toronto.

Re: 1565 Video "Twitch"
 

Be proud of those awards, that is quite an achievement!

Re: 1565 Video "Twitch"
 

thanks! that really means a lot :)

Re: 1565 Video "Twitch"
 

Oh we are proud, have no fears about that! and we will be more proud (sorry bad grammer) when this drive train becomes common place in the FIRST community :D (I have seen people mention it every now and then in threads, so its getting there *fingers crossed*)