How to construct a turret?

[F22Rapture]

Originally Posted by Adam.garcia

Hello Forum!

I have been scouring ChiefDelphi and other various resources, and I have seen much talk about using turrets as a method of aligning the shooting mechanism. However, I have not been able to figure out how one would power the turret to turn (and at such precise increments).

I've been specifically looking at team 1717's and team 1323's design. Can somebody delineate the confusion of the turret?

I'm assuming they both utilize a lazy susan of some sort.

Could you reference the designs you are talking about? (links I mean)

[Elgin Clock]

We built an award winning & published turret system in 2006.

http://www.chiefdelphi.com/media/photos/33185

http://www.chiefdelphi.com/media/photos/25671

It was a custom lazy susan application with two plates. One on top of the other & a LOT of small plastic ball bearings riding in a grooved track between the two.

A motor driven wheel (shown below the plate on the left of the image) drove the top wheel & allowed everything on top of that including the motor driven shooter wheel to turn with ~340 degrees of motion.

The only reason we couldn't turn a full 360 degrees or beyond is because we had cables running up to the shooter motor we couldn't safely route around the turret as it spun.

The ~340 degrees was plenty of a range of motion we desired though in this instance.

If you can get a copy of the FIRST Robots: Behind the Design book from 2006, it is featured in there with a more in depth explanation.

[waialua359]

Originally Posted by Elgin Clock

We built an award winning & published turret system in 2006.

http://www.chiefdelphi.com/media/photos/33185

http://www.chiefdelphi.com/media/photos/25671

It was a custom lazy susan application with two plates. One on top of the other & a LOT of small plastic ball bearings riding in a grooved track between the two.

A motor driven wheel (shown below the plate on the left of the image) drove the top wheel & allowed everything on top of that including the motor driven shooter wheel to turn with ~340 degrees of motion.

The only reason we couldn't turn a full 360 degrees or beyond is because we had cables running up to the shooter motor we couldn't safely route around the turret as it spun.

The ~340 degrees was plenty of a range of motion we desired though in this instance.

If you can get a copy of the FIRST Robots: Behind the Design book from 2006, it is featured in there with a more in depth explanation.

Nice work!