Re: 1726 progress - week 4
 

I am confused. The CIM motor is not moving at an angle anywhere on there robot. The CIM is chained to the shooter wheel with 2 sprockets. I'm only answering because apparently we have created near identical robots without any form of collaboration. :ahh:

Re: 1726 progress - week 4
 

Distance is changed based on motor speed, which has proven to be consistent enough to work during gameplay. Fortunately, with the shooter wheel spinning slower it still spits balls out at the same rate (about 4 balls per second).

haha, I hope that means we're on the right track. :p



EDIT: The turret is turned by another motor (a Banebots), if that's what you're referring to. It's turned by a v-belt pulley.

Oh, and I almost forgot; here's a video of some of the testing we did yesterday: http://www.youtube.com/watch?v=I9wl1x9Wf_Q

Re: 1726 progress - week 4
 

EDIT: nvm, just a misuderstanding... i get it now...

Re: 1726 progress - week 4
 

I hope we're on the right track as well. It would seem like it from our preliminary testing and your much more finalized testing. The only difference between our bots is somehow we made ours way more complicated which is not really a great thing. HAHA. I must say it looks really cool though. We are able to change our shot angle by adjusting the hood of our shooter though so we do not have to decrease speed.

Re: 1726 progress - week 4
 

How high is the bottom roller off the floor and what is the traction material on it? Spray on rubber?

Re: 1726 progress - week 4
 

It's about 7.5" off the floor iirc, and it is spray on rubber. We also used spray on rubber for the roller that feeds the balls into the shooting turret, but it didn't do the job there...so we added some roughtop.

The bottom intake roller works great.

Re: 1726 progress - week 4
 

I couldn't find any today at Lowes but really wanted to get some for a team we're mentoring. Any other places its available?

Re: 1726 progress - week 4
 

We got it at a building supply store that only has locations out West...but try this

http://www.plastidip.com/diy_where_to_buy.php

Re: 1726 progress - week 4
 

Nice tracking on the turret, but is it also adjusting speed too? It seemed like the balls were hitting the target from different distances but there was no solid clip of video with distance change just splices?

See you at LA.

Matthew Forman
Mortorq Team 1515

Re: 1726 progress - week 4
 

The shooter was not programmed to adjust for speed in the video, but the code is in the works.

Re: 1726 progress - week 4
 

New video! We made a little bit of progress on the camera tracking (helps that the manipulators all work perfectly now :rolleyes: )

http://www.youtube.com/watch?v=Bvf33dblw2I

We were trying to add in lead tracking to account for lag in the camera, to little or no success thus far. And we still have to implement a distance calculating algorithm (programming takes forever... but we have 2 weeks this year! hurrah!).

Re: 1726 progress - week 4
 

You guys are great, thanks for the videos, it inspires our team.

Re: 1726 progress - week 4
 

Another new video, this time with distance sensing! Our programmers made a pretty nifty code which we calibrated by taking a few data points (PWM value vs. distance fired). We're thinking about some type of encoder for the shooter roller, but so far we're definitely satisfied with what we've been able to accomplish.

Anyway, here's the video! http://www.youtube.com/watch?v=eTCr2nvFn3g

And thanks for the comment Doug, any chance to help inspire another is a chance worth taking!

Re: 1726 progress - week 4
 

Team 1726 you guys are just fantastic. By ship date your shooting will be unstoppable.

Now this next part I only say because you have been so great in sharing.

I have heard you are not doing traction control. If this is true you will be passed up by teams that shoot great like you but can maneuver just that much better. Don't let that concrete floor fool you, it will be tough driving on the real stuff.

You will do well in a regional without traction control because of your great shooting. But going to championships is a different story. I know because in 2007 we made it to Einstein and it is different.

Again you have been an inspiration to push my team harder. You are so ahead of us.

Re: 1726 progress - week 4
 

I guess once the games start we'll find out who was right, the teams who concentrated on shooting or the ones who concentrated on traction control - we're going to be with 1726 on the "shooting" side!