LED Wall Part 2
Introduction
The second part of the exploration on the definition and boundaries of WALL is focused on the use of digital display and materiality. The proposal was to create a LED wall using 10mm red LEDs, they are 10mm in diameter and 4 in each bar, creating 14 bars of LEDs for each alphabetic letter. 
Method
The digital display is going to have three letters controlled by the arduino board. Using the computer to send what letters to be displayed.
We imbedded LEDs into plexi-glass sheets, and offset behind another piece of frosted plexi-glass sheet both ¼” in thickness, held together by nuts and bolts. 
Ways to Improve
There were many alternative methods we have tested to run the LEDs. Using an H bridge to create shift outs, latches or a serial shift-register device. However we didn’t end up using the more sophisticated method of signaling the LEDs, but we intend to continue to work on that. Such as this circuit diagram using the H bridge to create shift outs.
Click to download Code
these are the letters we displayed on the LED panel.
At the carnival 2007 in CMU, the archibooth drew alot of attention. It is using a sustainable building material the bottles to create a unique experience.
The setup are four IR sensors two flood lights and various LEDs kept in the bottles.
IR sensors would pick up movement into the booth and the flood lights would then turn on.
this where the IR sensors are located
Diagram
For project number 6, we formed a group of three including Jared, Niko and I. We began the approach through the exploration of wall. By redefining it, giving it new properties that could adapt, morph and respond to the movement of people. The apparatus is the new 2007 archibooth, where we have collected around 2000 bottles and built a wall where visitors would walk through. We aimed to create a dynamic experience through sensors, lighting effects and smoke.
Materials:
The first process is getting the matterials. So far we have 750 10mm leds (they are really bright and beautiful to work with), 9 IR sensors, wires, transistors and etc.
Renderings could help us with lighting patterns
Then we proceeded to connect all the parts.
MOVING WALL Project statement
The idea behind the moving partition is to react to something that is in front of the partition. Our strategy was to react to the other objects by changing the partition's direction whenever it detects an object with a IR sensor. Starting from scratch, we first thought about ways to mechanically fasten the wheel and the motor to the partition. First, we tried bending metals in a shape of the motor shaft but it didn't fasten very tightly. Then we tried using wooden block; we cut them into two pieces and made grooves to fit the motor shaft and the steel frame on the partition. After putting them around the motor shaft and the framing of the partition, we used epoxy to glue the two pieces around the frameing and the motor. Then the motor was tightly jammed into another wood block and the wood block was screwed with the threaded steel bar, which was also connected to the motor. The rendering diagrams show how it is put together.
After connecting all of the wires to the motor and the IR sensor, the board was ready to be tested. The board moved forward in the direction of where IR sensor was pointing. Then when there was an object in front of it, the IR sensor picked up the object. When the IR senses that an object is in front of the partitions, one wheel stopped but the other kept on rolling, hence making the partitions to turn in such direction way from the object.
After the project is competely, we thought a great way to improve is to put in gears to increase the power of the motor, to be able to travel further. Making the project as simple as possible. Using a wheel that has the best grip and traction to the floor.
Renderings sketches
Connection between the wood and metal is glued together using heat poxy. The wheel is an 5" in radius rubber coated coaster.
The tougest connection is between the wood strap and the metal support on the presentation board.
The wheel is located behind the direction of moving. The wheel has full contact with the floor and the original wheels are for support.
The board travels freely until the IR sensor detects an obstruction (IR sensors, senses range betweeen 10cm to 80cm) and it will turn around 180 degrees and continue traveling.
Circuit diagram
Detial pictures
Work in progress and IR sensor along with the arduino board taped to the foam board.
Trying to create a tougher connection by using the zip ties before the poxy compeletly bounds them together.
Before connection the wheel portion to the motor.
The team
The Gum Ball Contraption Documentation
Introduction:
The project required to simply make something move in an elegant way. After a few initial ideas, which were making a leg stand up or battling robots, we ended up designing a gum ball machine. It might be as simple as it sounds. We decided to incorporate a couple of mechanical elements into the project. Including an Archimedes screw, a conveyer belt.
Materials:
Two large rubber bands
Gum Balls
A DC motor
Push Button
Solenoid
Sticks of varies sizes
Thin plastic strips
Wood for making the apparatus
Instructions:
Ways to Improve
Each of the components works perfectly by itself. But when we connect all the mechanisms together there are just too much friction for the small DC motor to power them all together. They tend to become stuck at times, and then we would have to use our hands to give an assisted start again.
Craft really matters when building these mechanics part, because a slightest inaccuracy could cause the entire system to fail.
The solenoid should be installed in reverse so that when it is “on” a ball releases, which would solve the problem of leaving solenoid on for a long time to become over heated.
Pictures
Wiring diagrams
Introduction
The project called for a design of a "lock" that follows a three step state code structure. The "lock" has to be and only can be unlocked by pressing three bottoms in a specified order. Each time the correct bottom is pressed the arduino board acknowledges the action and sets the machine to the next state. If an incorrect bottom is pressed, then the machine resets and returns to state o, thus creating a pendulum effect. When the state reaches 3 then the lock will be unlocked.
Design
In my group (Jerome and Patrick), we decided to construct a “bomb” that requires the user to sequentially “cut” three wires within 10 sec to defuse the bomb. The bomb has a single digit digital display (0 to 9), a speaker and a green and a red LED.
Code
We set up three states in the code and declared the led pins. Each of the three wires is used to change states. And a separate state that governs the digital display for counting down from 9 to 0.
Instructions
The bomb squad has to sequentially cut three wires in order to defuse the bomb within 10 seconds. Each time the wire is cut wrong, a beep will be the warning, and if the wires are cut in the right order the count down will stop and a green LED will light up. If time is up, the speaker will give out a warning and the red LED will light up.
Ways to improve
Blinking LED
IDEA:
By manipulating the electronic signals to create sound. We began the exploration by sending a voltage through the use of conventional guitar jacks and created a way to change the pitch.
Then we chose to use two servo motors and two IR sensors to twist the nobs on a guitar effect to introduce a varied effect.
*Component layout on stripboard
However, our adrino burnt out before the system could be completely finsihed.
We have learned to always protect the adrino board, and be careful with the power supply.
The project calls for a design of a lock that requires a three sequential steps to open the lock
see code
I intend to use three buttons, which are the state 1 (light/ photosensor), State 2 (Push button 1) and state 3 (push button 2).
The lock will be devised such as when there is light present (state 1 engaged), the user will enter the room and depress button 1 (state 2 engaged), and then push push button 2 to open the door (state 3 engaged).
see code (newly updated code, should work by now)