Central High Robotics Team Forum

[LogicBomb]

We had a pretty productive day today 1st period. We tossed around a couple ideas, and came across the decision of using a 2 point arm to hurdle the balls over the overpass. It's going to serve as the most versatile platform to play almost every part of the game (hurdling and herding trackballs, hybrid capabilities).

Me, Scott, and Jared also worked during 4th on the CAD file. The arm should be modeled and done by tomorrow so everybody can see.

The only thing left in the air is the claw design. A few of us mentioned the "crane game" design, where we build a claw similar to that and pick the ball up from the top, like in the crane game. We also have the idea of squeezing the ball from the sides, and scooping the ball. We need to decide on which tomorrow to make the deadline of Wednesday for the design.

So far, this is what we have:

6WD Pivot turning chassis, 4 BaneBots gearboxes driving it
2 Point arm, low center of gravity, 2 window motors powering it (similar to last year)

And Claw designs up in the air:
"Crane Game" claw
Squeezer
Scooper

[LogicBomb]

Finished the arm design in CAD.

After trying some things, I discovered a 2 point arm won't allow us to hurdle the ball over the 6.5 foot overpass. So I simply added a third point to the arm. The way it's configured now it has a reach length of 6.75 feet from the tip to the floor. When collapsed, it's height is 41".

There is only three rotating points, which means 3 moving parts. Very simple, rock solid, FIRST proven. Very dependable and light to boot. I'm really liking this design. All we need now is a claw design.

Starting config:



Pick up config:



Tallest config:

[oDnahtE]

I'm thinking of like a hoop-shaped claw. Something that can open up in the middle, go around the ball, close around it, lift it up and drop it. The only thing I can think of that gives some sort of mental image is putting a ball in a hoop that is smaller than it.

When it is on the ground, you can then close the claw around it and push the ball around the track, lift it back up, and toss it over the overpass.

This is assuming that you are allowed to do that. The ball is technically still touching the ground.
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