13-02-2012 01:48

ratdude747

Re: pic: Shaker Robotics Shooter

Looks pretty sweet. are those BB 550's or FPs?

13-02-2012 08:39

dbeckwith

Re: pic: Shaker Robotics Shooter

That camera is awfully close to the wheel...
Cool angle adjuster though!

13-02-2012 09:03

O'Sancheski

Re: pic: Shaker Robotics Shooter

I'm pretty sure they are 775s on a 4:1 BB transmission

13-02-2012 09:16

Sh1ine

Re: pic: Shaker Robotics Shooter

It is a bit close in this render. It should be moved out to the end of the platform. It will be able to tilt completely and still avoid the wheels.

As far as motors, we avoid the 775s at all costs. We are using FPs with a 4:1 reduction just like O'Sancheski said, but it is a custom transmission, not a BB.

13-02-2012 09:19

CalTran

Re: pic: Shaker Robotics Shooter

That hood design is interesting. I take it you also have a method of regulating the amount of air going to the cylinder so it is truly adjustable, rather than a 2 stage hood?

13-02-2012 09:20

wilsonmw04

Re: pic: Shaker Robotics Shooter

looks functionally similar to what we are doing with year. The only thing that worries me is your camera placement. Have you checked the vibrations you are going to get having the camera that close to the wheels?

13-02-2012 09:20

Ty Tremblay

Re: pic: Shaker Robotics Shooter

It's a motor on a lead screw.

13-02-2012 09:26

Brandon Holley

Re: pic: Shaker Robotics Shooter

Very nice. Our hoods are remarkably similar in design. We also chose a leadscrew for a few reasons. The top two being fine adjustment capability and also the resistance the leadscrew had on the hood torquing as a ball went through. The screw acts a mechanical stop as opposed to driving it at the pivot point with a longish moment arm.

Looking forward to seeing it all together.

-Brando

13-02-2012 09:27

CalTran

Re: pic: Shaker Robotics Shooter

Oh. Those do not need air adjustment. I like that idea then. Next question would be what system would be used to know the placement of the hood? First thought would have been a pot or an encoder, but I'm not sure where one would be mounted to be used.

13-02-2012 09:33

thefro526

Re: pic: Shaker Robotics Shooter

I'll let Jack go into more detail on this one, but if memory serves me correctly, 2791 is using two 500-series motors (want to say FP's last I spoke with Jack) and a custom spur transmission.

Also, 2791 has come a long way from the wooden Claw PVC arm days of 2011. Hehehe.

13-02-2012 09:44

Walter Deitzler

Re: pic: Shaker Robotics Shooter

Is there a reason to avoid the 775s? We have been using them and have not found a problem with them yet.

13-02-2012 09:47

thefro526

Re: pic: Shaker Robotics Shooter

The 775-18 Motors have been problematic in previous years.

Here is a thread that will tell you everything you need to know: http://www.chiefdelphi.com/forums/sh...ht=Banebot+775

Hopefully this prevents 2791's thread from turning into another 775 discussion.

13-02-2012 09:50

MrForbes

Re: pic: Shaker Robotics Shooter

We used one of last year's FP motors on our shooter because we had it already. We didn't have any 775s because we took apart the one we got last year, to see why it had so little resistance from the shaft to the wire terminals.

I like the Shaker shooter, reminds me of 1717 in 2009

13-02-2012 09:54

Taylor

Re: pic: Shaker Robotics Shooter

Underscored for truth.
We have our camera mounted on the same platform as our turreted shooter; the vibrations are quite severe.

13-02-2012 10:21

JackS

Re: pic: Shaker Robotics Shooter

Is there a known remedy for this problem? Perhaps mounting the camera on some foam to try and reduce the vibrations?

13-02-2012 10:31

MrForbes

Re: pic: Shaker Robotics Shooter

I'm guessing we're going to discover the camera vibration issue some time tonight...should be entertaining.

13-02-2012 13:27

Sh1ine

Re: pic: Shaker Robotics Shooter

If you look at the render there is a piece of aluminum that is bent on the right hand side as you look at it. A pot will be inserted in there and held in place with a simple piece of Lexan and double sided tape attached to the base (not shown here)