Robonauts 118 - Unveiled '08

[rachal]

Crab + turret + catapult + grabber. That's pretty much the most intimidating combination I can think of. Except for also putting the turret on a lift. But maybe they've done that too, and they just won't show us until competition.

[Drwurm]

Okay, the crab and turret is freaking me out. You guys are gonna be amazing this year, consider me a fanboy. I'd like to seem some pics of the control board for that thing.

[CCCP]

you have an amazing bot
good luck in competition
-post more pics

[rachal]

Hmmm is there a mode that auto controls the turret to stay in the same orientation relative to the field? Looks like it

[alex1699]

Originally Posted by Koko Ed

could not say it any better

[BenB]

Wow, all powered by surgical tubing is it? Im assuming you made some sort of transmission on the winch to allow free spin when you release but how do you keep it from back driving the motor once its "charged"?

[Drwurm]

Hmmm, I doubt that the robonauts are going to rely solely on another robot knocking down the ball for them. I think 118 probably still has a few surprises in store for us.

[Cory]

Originally Posted by 2166BlueBotics

Wow, all powered by surgical tubing is it? Im assuming you made some sort of transmission on the winch to allow free spin when you release but how do you keep it from back driving the motor once its "charged"?

That piston you can see in the transmission is pushing some sort of dog-like device into a disk/gear/etc to lock the transmission.

[BenB]

So then it has 3 gears? Drive, lock and free? How can you do that with 1 piston?

[abeD]

It may have two pistons in the transmission not just one.

[BenB]

From what I could see in the video it looked like there was one big (1.5") piston. I could be wrong...

[Doug Leppard]

great job

[roboticWanderor]

i think that they use that piston next to the motor there to disengage some gear or dog of some kind that allows thier winch shaft to spin free. then the dog reingages to allow them to winch down the catapult again. im not shure, i will have to ask at LSR

[BenB]

I agree, so then my question is, how do they "lock" the gears from moving, or do they hold it down by continuing to run the motor at a low speed. This would explain the fan on top to cool it down from all the heat generated by doing this. Am I right or do you think they are doing something else?

[ParkerF]

How long does the battery last on that thing, eh?