Ball bridge

This is our balls bridge. we were given a starting amount of $12,000 and we used about $5,000 more materials. We used 2 cups, 6 inches of tape and 8 straws. We were able to use our remaining money to make a bridge that was so cash, it was made out of cash.

Bridge and Junk

Our (My) Bridge weighed about 11.5 grams which was able to hold 115 batteries which was about a 230:1 ratio.

This is my bridge across a 12 inch gap

This is my bridge slanting from the weight of the batteries

This is the bridge about to break from the weight of the batteries



After the repairs and redesign, the bridge weighed about 12.6 grams, and was able to hold 267 batteries which was a 490:1 ratio, meaning our bridge was the winner!

I don't have a picture of the redesign, but i added 2 toothpicks on both sides where the strings would be. 1 horizontally, and 1 vertically. These 4 toothpicks, and some reinforcements on the joints made it possible to hold 152 more batteries!

If i were to redesign it again, i would reinforce the joints on the end of the bridge to keep it from sagging on the end.

Blog Post for Robot

We have gone through many different designs for our robot, many of which were not very functional. Our final design is the best because it is able to turn, and go strait.




Our change in design from the 2 different challenges wasn't very dramatic. We just switched out the front wheel with a stationary lego piece so there was no resistance while turning.


Feedback

+ Our first design was able to swim

Change: It could only swim so we should've probably make it actually move

+ Our second design could move forward and turn with the same design

Change: no need

Sketches:

Mouse trap cars

Acheivements:

• Braniac
• Visualize it!

• Build it!

• Competitor
• Going the Mile
• Feedback

+ Our car performed well in distance

Change: We need to make our string not get tangled on the axle

? Our performances were worse after the first and were not sure why

! WE WERE FIRST FOR 4 TURNS

• Rework:

We need to make our back wheels have grip on the ground without using the rubberband spokes because there were gaps between the rubberbands and that slightly slowed our car

• Game Changer:

Race will be downhill without self-power :)

• Name it!

Led Foot -> Sonic the Hedgehog

• Leave it cleaner than you left it

Acheivements claimed: 10

Cardboard canoe

Here are the achievements we claim:



• Build It! - Build your watercraft. Your build must meet the standards of construction (100% covered in Duct Tape). Document it with a presentable photo.
• The Early Bird Gets the Achievement - Awarded to the team with the fastest build.
The Farthest - Awarded to the team that can travel the furthest (laps)
• The Longest - Awarded to the team with the watercraft that floats the longest (multiple teams may be awarded this achievement if multiple boats remain afloat at the end of our competition period).
• Balance Master - Awarded if you can have at least one person stand for 5 seconds in the boat (you must conduct this away from the edge of the pool so that non one falls over and hits their head) 
• Feedback - Generate ten items of feedback for your effort (from the design/build process and/or the actual product). Make sure you include at least one item of feedback in each of our four feedback areas (+, change, ?, !)

• + We floated for longer than we thought
• change- We need to make a faster way to navigate through the water
• ? We had a leak somewhere in our boat, but it did not affect our performance
• ! WE HAD A GREAT TIME DURING IT
• + our design lasted much longer than last year
• + we were able to stand in out boat
• ! OUR BOAT WAS DOUBLE LAYERED AND IT HELPED IN THE WATER
• change- rudder for better steering
• ? How can we use less tape and surface area for our boat but still have it as stable
• change- we need to make more sketches and do math for it

• How Low Did You Go? - How low in the water did your canoe sit (roughly)? Was it suprising how little your boat went down in the water? What is the unit weight of water in pounds? How much did your pilot weigh (roughly)? Use math to help explain the depth that your boat sat in the water.

We sank about 1 inch into the water. Our pilot weighed about 110 lbs.

• Define the Problem and Brainstorm Solutions - State the problem you are designing a solution for. List at least 20 ideas you have regarding your solution.
• Criteria & Constraints - List or reference the specified Criteria and Constraints you're designing for. List at least one implied criteria. List at least three implied contsraints. 
• Sketch Ideas - Draw 3 different sketches for possible designs. Label at least 3 key features for each sketch. Describe the feature's functionality so a viewer understands why the called out feature is important.
• Prototype Ideas - Craft physical prototypes (models) of each of your three sketches. Use a notecard or post it note to call out at least one key feature on each model. Post the images to your blog and describe the key feature that you've pointed out on each.

• (Make Your Own Achievement) - Make an achievement of your own design that you can award yourself for something awesome your team did.

"Show your stars and stripes!" -Make a team flag to go with your nautical masterpiece 

Cardboard Canoe

We have our boat and our flag!

SORRY THEY'RE ALL SIDEWAYS

REDESIGN

SKETCHES

CONSTRAINTS AND CRITERIA

OUR IDEAS

ONE OF OUR PROTOTYPES

OUR SECOND PROTOTYPE 

WE LOST OUR THIRD PROTOTYPE

My First Blog Post!

Whaddup chumps

I enjoy this picture because it's Carl Sagan doing what he does best. He is a great man who has a reasonable amount of swag.

http://www.youtube.com/watch?v=gQPz6vgwxps