Maria | Ch.10 LCD and library

Maria | Waveshield and WaveHC Library

Maria | Adafruit Serial + Shift Register

Maria | Adafruit Servo Motor Tutorial

Maria | EA Ch.4

Maria | EA Ch.3

Maria | EA CH.2 Nightlight

Maria | Adafruit LED Exercise

Maria | Online Presentation

Maria | Manga ch. 3

1.  When food is digested, heat is produced. So when electricity flows through an electrical resistance, heat is also produced.

2.  Because of thermal emission, as temperature rises the lightbulb becomes brighter.

3.  A superconductor is a material that can conduct electricity with zero resistance below a certain temperature. They can be used as superconducting electromagnets, such as in maglev trains.  Metals can become superconductors at low temperatures.

4.  Ampere's Law states that for any closed loop path, the sum of the length element times the magnetic field in the direction of the length element is equal to the permeability times the electric current enclosed in the loop.

5.  The magnetic fields generated in each wire are combined to generate a magnetic field of twice the current around both conductors. A force of attraction is also generated between the two wires.

6.  A force of repulsion is generated between the wires. The magnetic fields negate each other and become smaller.

Maria | Manga CH. 1

1.  Microwave                    |    Wattage: 1560 W  Amp: 13 A    Volts: 120 V
                                            Cost(kWh): 15min use/24 hr = 15min use/60 min = 0.25 kWh * 1560 W =    
                                                                0.390 kWh * $0.121 =  approx. $0.5/day

2.  Hair Dryer                     |    Wattage: 1800 W  Amp: 15 A     Volts: 120 V
                                            Cost(kWh): 15 min use/24 hr = 0.25 kWh * 1800 W = 0.450 kWh *            
                                                                $0.121 = approx. $0.6/day

3.  T.V.                                |     Wattage: 600 W   Amp:  5 A       Volts: 120 V
                                            Cost(kWh): 180 min use/24 hr = 3 kWh * 600 W = 1.8 kWh * $0.121 =
                                                                 approx. $0.22/day

4.  Stove (med. burner)     |     Wattage: 1500 W  Amp: 6.25 A    Volts: 240 V
                                           Cost(kWh): 120 min use/24hr = 2 kWh * 1500 W = 3.0 kWh * $0.121 =
                                                               approx. $0.36/day

5.  Water Heater                 |    Wattage: 4500 W   Amp: 18.75 A  Volts:  240 V
                                            Cost(kWh): 150 min use/24 hr = 2.5 kWh * 4500 W = 11.250 kWh *
                                                                $0.121 = $1.36/day

I can plug two appliances into one outlet with a 20 Amps breaker; the hairdryer and the TV without tripping the breaker. Hairdryer (15A) + TV (5A) = 20 A. I cannot plug the hairdryer with the microwave because it will trip the breaker. Hairdryer (15A) + Microwave (13 A) = 28 A. I cannot include the stove and water heater because of the voltage differences are not compatible.

I used the Energy Use Tier I and Electric Fuel Adjustment for the calculations. GRU total charge without taxes and fees is approx. $0.121 kWh.

Also, I found out that older appliances consume more electricity than the rated label. I should consider changing to newer energy-efficient models. All of this is based off my November Electric Bill (11/30/2015). Average Electric Daily Consumption is $11.03. The total approximation of costs for the appliances listed above is $3.04. $11.03 - $3.04 = $7.99 approx. the cost of the other appliances used at home that are not listed above.

I found out that electric appliances are divided by two types: Resistive run and Motor run appliances.
Resistive run appliances consume the same amount of electricity from the time of start until stop of use. Motor run appliances depending on the configuration from the very first few seconds can consume 2.5 up to 5 times the rated consumption.


Read pages 1-36 in Tha Manga Giude to Electricity and post questions to blog.
Calculate how much it costs to use five common appliances that you use every day in your home for 24 hours. Please let me know the applicance, its wattage, amps and volts of each appliance and how you calculated cost. You will need to go to GRU or look at one of your electric bills.

How many of those appliances can you plug into one outlet without tripping a breaker? Please do this mathematically rather than through direct experience.

Maria | LEDS

Maria | Tom Igoe interview

I think that it's effective to have a hands-on approach to physical computing in order to better understand the hardware. The concept should drive the technology to make the piece stronger overall,  it also helps when dealing with troubleshooting problems. I disagree that art cannot bring anything important to physical computing, it can if the concept is strong. Collaboration is definitely important, and creating your own business does give one more power over how to create and at what price their product can be sold at. Collaborating can be the hardest part when communication between partners is not strong, so once that's done the planning stage to how whatever it is that needs to be done is what will determine who will do what jobs in that collaboration.

Maria | Manga questions ch. 5

wd

1.  LEDs are an example of a semiconductor device.

2.  Because electricity cannot pass freely through it.

3.  N-type semiconductors have an extra electron, giving it a negative charge. P-type semiconductors have a hole, giving it a positive charge.

4.  A diode prevents the electric current from going back and forth, forcing it to only go in one direction. N-type and P-type semiconductors join together to create a diode, where the positive side is the Anode and the negative side is the Cathode.

5.  Rectification allows electricity to flow only in one direction.

6.  The raw material of the semiconductor is dependent on what color the LED gives off. The color of an LED depends on where on the visible light spectrum that particular color is, for example; the color red is between 620-750 nm.

7.  The Collector Current can change significantly in response to a slight change in the Base Current. So it can be adjusted using the Base Current.

8.  Because it has no physical contact, a transistor doesn't wear out and is less likely to fail.

Maria | Ch. 8

Pictures from Crit and Charlie

Maria | Dec. 16 | Final Project Process

Working with copper tape...

Programming  the micro controller using the Arduino. The micro controller has pins where the parts of the circuit are connected to those pins would do what I wanted it to do.

The middle one has the "Blink" from the Arduino example programmed into it and the right one has "Fade". I left the one on the left to its default "Dice" function.

Micron pen for the black lines.

~~~touch~~~touch~~~touch~~~

Concept: 

I wanted to make a parallel between art and birds, both being untouchable, by making it interactive so that the person is allowed to touch to make the LEDs light up. They have to figure out where to touch to do that, and I think part of the project was to make it a surprise.

Making it more like it belongs in a gallery space would have made the concept stronger.

If I had to do this again, I would use feathers and conductive paint as everyone suggested. And using a different kind of surface to play with. ^.^;



Code:

I used an AVRISP MKII to help program the micro controller using the Arduino.

For pin 2: (fade)

/*Code for the fading attiny45/85 in which pins fade in sequence.  
 * When switch is pressed, all pins fade together.
 */
//                        attiny45/85
//                   reset -+---+- power
//      (switch input) pb4 -+   +- pb2 (fade 2)
//                  ground -+---+- pb0 (fade 1)
//               
//               Ppins fade in sequence.  When switch is pressed, all pins fade on and off 

void setup() {             
  pinMode(2, OUTPUT); 
  pinMode(4, INPUT);   // switch pin  (touch sensor)
  digitalWrite(4, HIGH);  // turn on pull-up resistor
}

void loop() {
  for (int k = 0; k<4;k++)
  {
    for (int i = 1; i<1000; i=i+10)
    {
      int switchValue = digitalRead(4); // read the switch.  0 if closed, 1 if open
      if (switchValue == 0)
      {
        digitalWrite(2, HIGH);
      }
      digitalWrite(k, HIGH); 
      delayMicroseconds(i);  
      if (switchValue == 0)      
      {
        digitalWrite(2, LOW);
      }
      digitalWrite(k, LOW);    
      delayMicroseconds(1000-i);   

    }  
    for (int i = 1; i<1000; i=i+10)
    {
      int switchValue = digitalRead(4); // read the switch.  0 if closed, 1 if open
      if (switchValue == 0)
      {
        digitalWrite(2, HIGH);
      }
      digitalWrite(k, HIGH); 
      delayMicroseconds(1000-i);   
      if (switchValue == 0)      
      {
        digitalWrite(2, LOW);
      }      
      digitalWrite(k, LOW);   
      delayMicroseconds(i);         
    } 
    delay(200);
  }  
}

For pin 1:

/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the Uno and
  Leonardo, it is attached to digital pin 13. If you're unsure what
  pin the on-board LED is connected to on your Arduino model, check
  the documentation at http://www.arduino.cc

  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
 */


// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 1 as an output.
  pinMode(1, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(1, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(1, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
}

Pin 0 stayed with the original Dice function.

Skycraft 10/23

4 Different LEDS

Two Giant Capacitors

2 Devices that contain Solar panels

Breadboard

5 devices that contain sensors

6 different kinds of cables specs of each size in gauge

remote control

Electronics kit. What does it do

find solderable perf board


find 5 different motors

find 3 devices that deliberately produce sounds


find a strobe light

find five different kinds of potentiometers or variable resistors. what is their range of voltages? What are they used for?


Find five different kinds of switches

two kinds of speakers

three different kinds of magnets

a device that counts

LCD panel

6 things you might want to use in a project