ROBOTICS ASSIGNMENTS: 1, 2 & 3

Amy Ni hIfearnain

Contents

·TaskList –grabbers1)Claws2)Buckets·Kit Parts1)Hexbug2)Potentiometer kit·Design Elements1)Front intake

Grabbers

ClawsBuckets- yes, I know it’s not a bucket but I couldn’t find a picture of a robot with buckets for arms.

Grabbers

Attached to metal or plastic arms

Small motors at the joints Bits of rubber at the tips Claws are good because... They have more precision

than buckets Claws are bad because... They can only pick up one

thing at a time

Attached to metal or plastic arms

Small motors at the joints

Buckets are good because...

They have retention Buckets are bad

because... They’re imprecise

Claws Buckets

Kit PartsHexbug

The HEXbugs are designed as a fundraiser

They are small, toy robot-bugs

They can be bought from the VEX website and sold at 50% profit by the Robotics Team

Kit PartsPotentiometer Kit

Useful for autonomous: measures angular position, ie. Making the robot “aware” of the position and motion of its components, and therefore its actions.

A separate Programming Kit is needed to use the potentiometer

Cost €11.99 from VEX website

Design Elements: Front intake Claws/ buckets/scoop Description/ pros and cons of claws/buckets

given previously Scoop Funnel-shaped, attached to an “arm”, possibly

with a valve at the narrower end The balls can be scooped up into the funnel, and

then stored there while the robot goes to the goal. Then the funnel can be raised above the goal, and the valve opened so that the balls fall into the goal.*

Design Elements: Front intake The scoop is good because it is easy to

drop the balls into the goals The scoop is bad (relative to the claw)

because a separate design is necessary to hang from the bar at the end of the game.

* this description of how to use the scoop would only work for the Buckyballs; for the large balls the funnel would have to be tipped upside down.