Team 2363 turret actution

[ToddF]

Of all the concepts we had for actuating the turret, our students liked the concept presented by team 95 here the best.

We made some changes we thought were beneficial, but give credit where credit is due.

Video here.

[akoscielski3]

Looks Great!

We got ours mounted today. Only thing left it to put a belt around it and some tensioners, then we are done the spinning aspect of the turret.

[Andy A.]

Looks pretty snazzy!

[bearfromtx]

That is impressive, we were looking at a direct mount idea for the motor... this has shown me that I HAVE to gear down. Awesome design!

[Grim Tuesday]

At what power are you spinning that motor? We were using one of those for our collector, we may need to rethink.

[akoscielski3]

Originally Posted by Grim Tuesday

At what power are you spinning that motor? We were using one of those for our collector, we may need to rethink.

This motor (alteast the one i think they are using) spins at 84 RPM. We are using the other motor from andymark, that came with a gear box (not in KOP), spinning at 210~ RPM. This is just enough for a ball collector (with 1.9" diameter tubing, and polycord as a conveyor system)

This is the motor we are using

[n1ckd2012]

Out of curiosity, why is the chain fixed to the lazy Susan? Wouldn't a continuous chain allow you to shoot back wards? ( with proper wire routing of course)

Originally Posted by n1ckd2012

Out of curiosity, why is the chain fixed to the lazy Susan? Wouldn't a continuous chain allow you to shoot back wards? ( with proper wire routing of course)

But why shooter backwards? I understand if your robot is facing the other way/driving away, however for the most part most people are going to be facing the area they'll be shooting at instead of away from it, and I doubt we'll see too many people who will be shooting while driving away from their hoops.

[Nuttyman54]

Looks good, very smooth rotation.

Originally Posted by n1ckd2012

Out of curiosity, why is the chain fixed to the lazy Susan? Wouldn't a continuous chain allow you to shoot back wards? ( with proper wire routing of course)

A continuous chain would require the outer ring be a sprocket, instead of just a disk like they have. Sprockets usually aren't easy to make by teams, and finding a COTS one the right size and for a decent price is difficult. They have what looks like about a 20-30 degree deadband, which in this game probably is going to be un-noticeable.

[Steven Donow]

Looks very nice! We finally got our turret testing, and we're doing pretty much the same thing, only with a belt cut in half. We also don't plan on shooting backwards. Same motor too.

[LinuxArchitect]

Originally Posted by SuperNerd256

But why shoot backwards? I understand if your robot is facing the other way/driving away, however for the most part most people are going to be facing the area they'll be shooting at instead of away from it, and I doubt we'll see too many people who will be shooting while driving away from their hoops.

No offense, but I always laugh when people use the terms forward/front and backward/rear. When you do, you are limiting your actions. Except for the act of driving itself, who cares? It's not like you are actually sitting on the robot facing the forward direction of the drivetrain and you have to look over your shoulder to shoot "backwards". Your robot can move and face in any direction. Therefore, you might want it to shoot in any direction.

In this case, perhaps you are in the process of collecting a ball. Murphy says the ball will be in the most awkward location possible. Your design decision is, can I shoot immediately, or do I need to rotate the chassis. As mentioned, a small deadzone might be acceptable. But full 180 turns to shoot might not be.

[Tom Line]

Originally Posted by SuperNerd256

But why shooter backwards? I understand if your robot is facing the other way/driving away, however for the most part most people are going to be facing the area they'll be shooting at instead of away from it, and I doubt we'll see too many people who will be shooting while driving away from their hoops.

O Rly? Get back to me in after a couple of regionals. I think you'll be very surprised by what the top teams do in autonomous mode.

[JamesCH95]

Love it! We have made a few modifications to our original prototype, pictures to come soon I hope.

[ToddF]

Originally Posted by Grim Tuesday

At what power are you spinning that motor?

We didn't measure the current, so I couldn't tell you how much power we were using.

[wireties]

Very nice, FIRST Team 1296 is using the same motor and a similar gear ratio but we turned the entire rotating plate into a giant gear - so no chain