Canburglar Mechanisms

[JesseK]

We designed a can grabber last night in under 3.5 lbs. With a high flow valve, it could be under half a second to grab. With CAD, it's fairly easy to get right. I'll release the design once we fabricate it and know it works as-intended.

1.) 2D sketch the landfill & step, including totes/RB's
2.) Position robot in notional grabbing position in that sketch.
3.) Figure out where on your robot a can grabber would mount, then measure from that point to the center hole of the RC can
4.) Subtract that distance from 78" and that's the maximum height the pivot point can be at for the grabber.
5.) Add Pneumagics. Since the total rotation is ~90 degrees, the math for a bell crank is extremely simple.
6.) CAD mounts, fabricate them (CNC or any other plate-milling/cutting machine really helps, but isn't 100% necessary)
7.) Plan to get calibrations of angle on Thursday at the event

[Michael Corsetto]

Originally Posted by JesseK

1.) 2D sketch the landfill & step, including totes/RB's
2.) Position robot in notional grabbing position in that sketch.
3.) Figure out where on your robot a can grabber would mount, then measure from that point to the center hole of the RC can
4.) Subtract that distance from 78" and that's the maximum height the pivot point can be at for the grabber.
5.) Add Pneumagics. Since the total rotation is ~90 degrees, the math for a bell crank is extremely simple.
6.) CAD mounts, fabricate them (CNC or any other plate-milling/cutting machine really helps, but isn't 100% necessary)
7.) Plan to get calibrations of angle on Thursday at the event

This looks like a recipe for some delicious cheescake...

-Mike

[Richard Wallace]

Originally Posted by Michael Corsetto

This looks like a recipe for some delicious cheescake...

Give someone a cheesecake, and she'll (probably) enjoy eating it. Teach her to make cheesecake, and ...

[Michael Corsetto]

Originally Posted by Richard Wallace

Give someone a cheesecake, and she'll (probably) enjoy eating it. Teach her to make cheesecake, and ...

...she'll be inspired either way?

[Richard Wallace]

Originally Posted by Michael Corsetto

...she'll be inspired either way?

No doubt at all. The teaching just helps spread the inspiration further.

[The_ShamWOW88]

Originally Posted by Richard Wallace

Give someone a cheesecake, and she'll (probably) enjoy eating it. Teach her to make cheesecake, and ...

Why's it gotta be a she? I <3 cheesecake....

[mrmummert]

1610 has one....https://www.youtube.com/watch?v=BJoD...RUtz3Dy8ynfN3A

[TDav540]

Although our team doesn't have something (yet) that grabs the bins during autonomous, we were able to grab the bins from the step over the upside down totes once a member of our alliance (sometimes us, but many times our partners) cleared the landfill. It was a critical component of our success at Virginia this year, but we do hope to improve the system's capabilities.

[tStano]

3418: Robo-Riot had a really cool design in Wisconsin which went in the top of the can and expanded, allowing the can to be lifted. It wasn't the most successful, but it was the coolest design I've seen so far. It looks light.

I'll try to dig up some video. 2530: inconcievable had a more effective canburglar, which was definitely part of their original design, its just a 4 bar with hooks on the end. Very effective, although they didn't do it in auto.

[brandon.cottrell]

1538 did a really nice steal mid-match in the finals of Arizona east. Less than 20 seconds left, they saw the opposite alliance trying to grab a can, so they stopped pursuing the one they were already going for and grabbed that one out of the clutches of their opponent. Even though they lost, it was still a really good play.