3322 Shooter

[snekiam]

Video (https://drive.google.com/file/d/0BxTV7clviXOxQnVLdnVEZWw1aUk/view?usp=sharing)of our practice shooter hitting the high goal multiple times. Note that the target is a bit higher than normal, as our practice bot was not completely assembled as of the time of this video. Credit for the video goes to Tommy on 3322.

[JABot67]

Good job guys! Reminds me of that great shooter we had back in 2012. Good times. Next step is a 2 ball auto, right??

[GMeyer]

My team has a shooter very similar to that one. What are you guys using to achieve that accuracy rate?

[snekiam]

Good job guys! Reminds me of that great shooter we had back in 2012. Good times. Next step is a 2 ball auto, right??

Haha we can always dream of that. Could be too risky going over the centerline.

[FIMAlumni]

Impressive accuracy! Looks like the ball is coming out with front spin, so I'm guessing single wheel on top?

[Zach101]

How far out are you guys from the goal? From what I am seeing it was shooting from pretty far away. Good job.:D

[Basel A]

My team has a shooter very similar to that one. What are you guys using to achieve that accuracy rate?

Not sure why Miles didn't answer your question. :) It's a two-stage* shooter using a pair of 3.5" colsons on each stage and a lexan-surfaced (http://i.imgur.com/ZA8BqSh.jpg) hood. Each stage is powered via belt by a 30:18 geared up miniCIM. Currently the motors are open-loop. We'll be closing the loop and implementing speed control real soon. Release angle is around 35-40 degrees to the horizontal. This particular shot is from the defence "safe zone."

Here's (http://i.imgur.com/8k6lB8z.jpg) the best picture I have at the moment. Intake was between revisions at this point.


*In my opinion, this is the key to this shooter's accuracy. More time for the ball to reach shooter wheel speed means less slip, less slip means less variation in shot between balls.

[snekiam]

Not sure why Miles didn't answer your question. :)
I didn't think I knew how to give an accurate answer to that, but I can mention that no closed loop programming has been done yet.

[snekiam]

How far out are you guys from the goal? From what I am seeing it was shooting from pretty far away. Good job.:D

Shooting with the back of the bot touching the outerworks (approximately)

[Bluman56]

Really like this design. Awesome stuff.

[anishde]

Great job, guys! My only question is - are you using a wheeled shooting mechanism? And if so, are you using horizontal or vertical wheels?

[Jcarbon]

The wheels are vertical. There are two stages, each with two 3 1/2 wheels. The first stage is a little slower than the second one.