pic: Team 1388: Secret Weapon

[Mike Hendricks]

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[Jeffrafa]

Wow.

That thing is awesome! I couldn't stop laughing when i saw it and figured out how it works. Its certianly an interesting and very innovative use of your tools.

Good Job, wish we'd thought of something like that

Jeff

[Denman]

not sure if it quite matches the dominate switch
i'm not quite sure what it does now... it looks like the leverage is a bit little... but i'm not really sure

[Mike Hendricks]

Originally Posted by Denman

not sure if it quite matches the dominate switch
i'm not quite sure what it does now... it looks like the leverage is a bit little... but i'm not really sure

All it does, is keep that gear from backdriving, which keeps us from having to keep the FP motor at a stall. Simply move the motor up, and the servo locks in the "up" position. The shaft with the gear on it, is threaded at the end and has a jam nut on it which the ratchet fits over. The ratchet is bolted to the frame using a piece of 1x1 tubing and some grade 8 bolts.

When you want to lower the arm, pull the stick down. The program sends a small pulse to the FP motor to raise it up (since you cant change directons on a ratchet under load). The servo then puts the shaft into neutral and allows the arm to be lowered. When you let go of the stick, the servo shifts back into the up posititon, making it ready for the next lift.

As for the dominate switch .. heh. This is actually useful

We're predicting judges/field officals at the events telling us we left a tool on the bot before the match starts, one thing is for sure .. it isnt coming off any time soon.

[tiffany34990]

that's pretty cool-- not backing driving is a good idea-- we did that and sorta bent somethings but it's all fixed--good job guys

[RoboticsIsLife]

Originally Posted by PhatMike

As for the dominate switch .. heh. This is actually useful

Oh, our dominate switch has a use...but it wouldnt be a Secret weapon if we told you


~Team358

[Josh Fritsch]

Haha, that looks almost exactly what we used as part of our winch last year to hang on the bar! Nothin like good ol' socket wrenches

[Rick TYler]

Posting messages that just say "Cool dood!!3!! I rilly rilly like it!3!!" is usually just a waste of bandwidth. I try to avoid it.

But in this case I can only say, "Cool dood!!3!! I rilly rilly like it!3!!"

[Garth1388]

We threw this baby together in about 3 hours, two days before ship when we burnt out the FP. Can you say desperation.

[Katy]

we had a closed 7/16th wrench once on our robot to guide rope...but I am sorry that is so funny/awesome...one of the most funny/awesome things in just about forever. How much can that hold?

[jgannon]

Originally Posted by Katy

we had a closed 7/16th wrench once on our robot to guide rope...but I am sorry that is so funny/awesome...one of the most funny/awesome things in just about forever. How much can that hold?

Our arm is only designed to lift one tetra at a time, so we haven't tried any more than that. It already has a little trouble shifting to go down with only one tetra on there, so I wouldn't dare try two. Nonetheless, it achieves its intended purpose.

[bombadier337]

So if I'm looking at this right, does that servo let the wrench fall backwards so you can lower the tetra.

I love the ghettoness of it.

[jgannon]

Originally Posted by bombadier337

So if I'm looking at this right, does that servo let the wrench fall backwards so you can lower the tetra.

Basically, yes. The servo shifts the wrench between clockwise and counter-clockwise rotation, depending on what the driver is doing with the controller.

Originally Posted by bombadier337

I love the ghettoness of it.

So do we.