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Unread 01-14-2012, 10:09 AM
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eedoga eedoga is offline
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FRC #2980
 
Join Date: Jan 2011
Location: Oak Harbot
Posts: 156
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FIRST Team 2980's 2012 Open Source Robot

Hey all,

Team 2980 is once again going to post everything we come up with. We receive a ton of help from the FIRST and Chief Delphi community and want to give back as much as possible.

Our team goes uses the first week for prototyping and design. At the end of the first week we share our designs with the greater community and have them select the design that we will finalize and build. This years plan is to build a robot capable of dumping into the second row, and shooting from the safe zone at the top of the key. From there we hope to shoot for the top and middle row.



We'll try to post some more detailed shots as we finalize the design today and Monday.

Key things and ideas:

We want to use a belt driven ball harvester to convey balls from the floor to the hopper/dump bucket.

We designed the drive train with a dropped mecanum set up using 4 powered traction wheels 2 inches off the ground that lift the robot up so that the mecanum wheels are slightly protected for driving over the bump.

We want to have a pole slapping mechanism for pushing down the Bridge for the end game.

Issues:

The magical dumping ball hopper...

So making a box that can dump seams easy...trap door in the bottom to let balls in but not out, open top for pouring balls out... use a piston to lift the and tilt the box to just over 90 degrees pouring the balls out into the hoop...Uses gravety...easy peasy.

cannon hopper...Balls come up through the bottom trap door, then a piston pushes them forward in loading them into the cannon...Piston retracts letting another ball light up to be fired...also seams relatively simple...

Now we need to combine those two things into one thing...

Aiming...

The community really wants us to use either a camera/ultra sonic detector combo, or mount the kinect on our robot.

Using the ultra sonic sensor mounted on the cannon... The sensor measures the distance to the wall and regulates the speed of the spinning wheels in order to get the ball to go the right distance based on the desired target height...

The camera would be used to detect the reflective square above the hoop, or for our driver to use to line up shots.

Thinking of using a piece of plastic mounted in front of the camera to calculate the range to the target.

Ok...so those are at least some of our ideas...

Team 2980
 


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