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  #61  
Old 04-28-2012, 10:49 AM
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Re: "Sack Attack" Ideal Intake(s)

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Originally Posted by The VEX Raptors View Post
The most efficient claw-bot, in my mind, would be something like this:
2 393s on the drive
2 393s on the arm or lift
That leaves six motors. With these six motors, a robot could have six independent claws. It could also have many more claws operated by pneumatics. With 6 motors and 4 pneumatic pistons, you've got yourself 10 claws. Plus, you might be able to double up claws on one motor/piston, meaning your robot could be literally bristling with claws.

Such a robot would have to be pretty light, and the driver(s) would have to be very skilled to operate that many claws, but I think it can and will be done.
no offense, but thats sounds a little ridiculous. Using 6-10 claws is just not efficient, as you could come up with a separate mechanism that is much simpler and holds more than that.
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  #62  
Old 04-28-2012, 11:00 AM
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Re: "Sack Attack" Ideal Intake(s)

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no offense, but thats sounds a little ridiculous. Using 6-10 claws is just not efficient, as you could come up with a separate mechanism that is much simpler and holds more than that.
I'm not saying that I would want to use this sort of design, but I was pointing out that a claw-bot can indeed hold more than 1-2 sacks at a time.

Plus, wouldn't a many-clawed robot be really fun to watch?
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  #63  
Old 04-28-2012, 01:02 PM
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Re: "Sack Attack" Ideal Intake(s)

I think we had a similar idea for Round Up, the Octobot with 4 different needle intakes, but we couldn't make it work with 10 motors. The extra 393s and pneumatics make it slightly more feasible.

2 claws is probably the most realistic multi-arm robot design, because any more and it becomes hard to manage/build/power/control. Maybe 4. Not sure if it effectively mitigates the disadvantage of clawbots (their capacity) though. Now, if you had, say 2 efficient processor intakes (whatever that turns out to be this year) on 2 arms, would it be any better to be able to intake and outtake separately?

Additional thought: Yes it is, you could make one arm that reaches up to 30" to descore/score one at a time, and the other one able to dump large numbers of sacks in the troughs.
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  #64  
Old 04-28-2012, 02:00 PM
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Re: "Sack Attack" Ideal Intake(s)

"Roboctopus," not "Octobot" :P

And yes, 2 claws could work. Is it a good idea, though? I (personally) think not.
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  #65  
Old 04-28-2012, 10:39 PM
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Re: "Sack Attack" Ideal Intake(s)

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Originally Posted by Totally Generic Name View Post
I think we had a similar idea for Round Up, the Octobot with 4 different needle intakes, but we couldn't make it work with 10 motors. The extra 393s and pneumatics make it slightly more feasible.

2 claws is probably the most realistic multi-arm robot design, because any more and it becomes hard to manage/build/power/control. Maybe 4. Not sure if it effectively mitigates the disadvantage of clawbots (their capacity) though. Now, if you had, say 2 efficient processor intakes (whatever that turns out to be this year) on 2 arms, would it be any better to be able to intake and outtake separately?

Additional thought: Yes it is, you could make one arm that reaches up to 30" to descore/score one at a time, and the other one able to dump large numbers of sacks in the troughs.
I didn't say multi-arm, just multi-claw. You could have multiple claws on one arm. The sacks are all arranged in nice rows for you to pick up.
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  #66  
Old 04-29-2012, 05:55 PM
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Re: "Sack Attack" Ideal Intake(s)

There are some interesting intakes in the video posted here. It's a full-length record of the 2008 Bridge Battle finals and several hours long, but the video quality is pretty good.
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  #67  
Old 04-29-2012, 06:16 PM
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Re: "Sack Attack" Ideal Intake(s)

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There are some interesting intakes in the video posted here. It's a full-length record of the 2008 Bridge Battle finals and several hours long, but the video quality is pretty good.
How do I stream it like it said in the post?
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  #68  
Old 04-29-2012, 09:43 PM
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Re: "Sack Attack" Ideal Intake(s)

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How do I stream it like it said in the post?
Use VLC to stream it. Simply open VLC and copy and paste the .wmv link onto to the streaming/exporting wizard option.
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  #69  
Old 04-30-2012, 12:18 PM
Ms. Science Ms. Science is offline
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Re: "Sack Attack" Ideal Intake(s)

Don't bet that the sacks will stay in nice neat rows.
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  #70  
Old 04-30-2012, 06:06 PM
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Re: "Sack Attack" Ideal Intake(s)

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Don't bet that the sacks will stay in nice neat rows.
Of course not. That would be like saying that the pyramid of objects in Gateway would remain undisturbed for every match. But in the beginning, they are indeed in nice, neat rows.
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