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This lab was mostly to focus on building circuits with out the Arduino

I started by first looking at my power adapter. The adapter I was using was Positive on the outside and Negative on the inside.

The power adapter is connected through the breadboard to a 7805 5-volt voltage regulator which drops the 9v to 5v

This is my basic LED circuit with a switch.

Physcomp Lab3-Basic circuit from Zeven Rodriguez on Vimeo.

I then connected another LED in series

Physcomp Lab3-Components in Series from Zeven Rodriguez on Vimeo.

Then measured the first LED in the circuit

Then the second

Finally, I added with a third LED. When I did that the intensity of the LEDs dropped. The last led dims because most of the voltage is sucked up by the first 2 leaving the last LED with a smaller current.

Physcomp Lab3- series Led plus 1 from Zeven Rodriguez on Vimeo.

In the parallel circuit I measured the amperage after the LEDs.

The last part I measured the resistance on a pot.

Physcomp Lab3-Pot Variable Voltage Measuring from Zeven Rodriguez on Vimeo.

This second part was using another type of analog switch to control leds. I used a photocell and when you put your hand over it switches between the lights. The hardest part was figuring out how to get the arduino to read the photocell. I referenced week 4′s lab. What I figured out was on the board first to run the positive —>photocell(+)—> photocell(-)—>Arduino analog in—>220Ohm resister—>Ground. The analog in reads the resistance off the photocell. Another issue I ran into was dealing with the photocell reading to make it smoother because of the fluctuations in light.

This is the code I used for this.

int potPin = 0; // analog pin that pot attaches too “blue wire”
int potValue = 0; //value initial
int led = 9; // displays what the pot is doing
int led2 = 10;
int x = 0;
int y = 0;
void setup(){

Serial.begin(9600);

}

void loop(){

potValue = analogRead(potPin); //read pot value
x = potValue/4;// sets the value arrange between 0 and 255

if (x < 10){
// makes for smoother range control
x = 0;
}
x = map(x,0, 150, 0, 255);

y = -(x – 150);
if (y < 20){
// makes for smoother range control
y = 0;
}
y = map(y,0, 150, 0, 255);

analogWrite(led, x); //pwm led w/ pot value
analogWrite(led2, y); //pwm led w/ pot value

//Serial.println(x);//print value
Serial.println(y);//print value
delay(10);

}

Physcomp-Lab 2 part2 from Zeven Rodriguez on Vimeo.

This is my Fantasy machine for Tom Igoe’s Physical Comp class.

For a better view download here

So I tried to code a traffic light. This is a rough sketch. The idea is to have a toy car roll over the contacts and it initiate the traffic signaling.

Traffic Light from Zeven Rodriguez on Vimeo.

This is the code I used

int pinRed = 3;
int pinYellow = 4;
int pinGreen = 5;
int switchButton = 2; // button
int switchIni = 0; // Initial state of switch

void setup(){
pinMode(pinRed, OUTPUT);
pinMode(pinYellow, OUTPUT);
pinMode(pinGreen, OUTPUT);
pinMode(switchButton, INPUT); //takes in switch signal

}

void loop(){
switchIni = digitalRead(switchButton);

if (switchIni == 1){
digitalWrite(pinRed, HIGH);
digitalWrite(pinYellow, LOW);
digitalWrite(pinGreen, LOW);
delay(1000);
digitalWrite(pinYellow, HIGH);
digitalWrite(pinRed, LOW);
digitalWrite(pinGreen, LOW);
delay(1000);

digitalWrite(pinGreen, HIGH);
digitalWrite(pinYellow, LOW);
digitalWrite(pinRed, LOW);
delay(5000);

}

else{
digitalWrite(pinRed, HIGH);
digitalWrite(pinYellow, LOW);
digitalWrite(pinGreen, LOW);
}

}

I took a walk around my neighborhood around Wall street. As part of a assignment for my PhysComp class, I documented all the sensors I saw in the area.

Outside of my building this doorbell also contains a camera which picks up anyone who comes close.

Buttons and touch screen on both the cell phone and the ATM help users navigate through menus

Being on Wall St. a lot of tourists and the media are in the area. Most carry cameras which have sensors to detect light and touch screens and buttons to navigate through menus.

Minutes after taking these pictures I tuned in to MSNBC and the scene I documents in the first picture was on TV following the Presidents address at the Federal Reserve.

I counted about 20 security cameras in my area all picking up data on the people on the street

The Postal Office has a teller for automatic mail services with buttons and touch screen

This door signals an emergency when you push the lever

The cashier uses the touch screen on the register to ring up the customer

This alarm has buttons to test the alarm, but function on sensors to sound the alarm