affordances

The affordances of anything specific combination of properties of its substance and its surfaces taken with reference to an animal. The invariant combination of properties is "meaningful" whereas an single property is not. So perhaps affordance is the meaning of the surface and the substances attached to it which could be listed forever.

A lot of people don't era;ize that in the last a thousand years man has modified almost every part of the worlds surface. Furthermore natural materials of the world have been mixed and converted in to man made materials like bronze and iron.

This is because man has made the world to further benefit himself. Making it easier to get food, stay warm, see at night and raise offspring.

3 objects in class

chair - the chair being on a stand with a back cushion implies that you sit on it, but what exactly has programmed our brain that this surfaces implies to sit. Man had originally sat on the ground or on surfaces i doubt they had discovered to build chairs but rather stools. Interestingly enough now when i see someone sitting on a stool they seem uncomfortable. Therefore, i believe this surface is controlled by the advancing of convince man has applied to the world. To make ones life easier.

The mouse - the mouse is interesting surface bc its an apple mouse, so at first using one i was a bit annoyed that you could clearly see the left right button. But after further looking in to it i realize that its better because it allows you to program which buttons do what rather than standard buttons. Furthermore, it holds more physical attraction from its sleek smooth design.

screensaver - i thought this was interesting surface bc its technically not necessary yet adds much appeal to the lab. Without the screen savers everything seems so dull, the screen saver almost lures students into wanting to use the machines. Which i wonder whether that was the intent from the original design of the surface.

fritzing

evidence of playing with fritzing

setting up the digital number counter in frizting

digikey

LED GREEN CLEAR THIN - 2V

LED YELLOW CLEAR  - 2V

LED BLUE CLEAR  - 3.4V


Color : red
Manufacturer : Panasonic Electronic Components
Resistance = 9.75Ω
Voltage = 1.95V
Current = 5mA

Color : Green
Manufacturer : Lite-On Inc
Resistance = 40Ω
Voltage = 2V
Current = 20mA

Color : green/Red
Manufacturer : Lite-On Inc
Resistance = 21Ω
Voltage = 2.1V
Current = 10mA

Color : Blue
Manufacturer : Dialight
Resistance = 66Ω
Voltage = 3.3V
Current = 20mA

Color : green
Manufacturer : Rohm Semiconductor
Resistance = 22Ω
Voltage = 2.2V
Current = 10mA

Manga pg.36-80

1. Static elecrity
When static electricity happens when there is a imblamnace of electrical charges within the surface of a material.


2. Contrast the speed of an electron with the speed of electrical motion in one sentence.
When an electron moves through a conductive material the process and time it takes to reach a destination is much faster then the speed of electrical motion is much slower since it can be either postive or negative.


3. Briefly explain the relationship between resistance and energy. Use an example from your house.
When there is a resistance applied to a circuit it limits the amount of enegery applied to the different componets. When a Led that is connected to lets say 5 volts that does not have the proper reistance  the enegry of the current will trun into heat and either light the led or burn out the bulb. Since volts is may to much energyfor the led you have to shortne the power supply to properly light the led.


4. What is the difference in AC and DC current? Give and example of each from your daily life. If you get shocked,

AC is alternating current and  DCstands for direct current.
AC current is a current that has either a negative or a postive end like a battery
DC curret is in constant flowing direction which would be like the negery that is used to light house that come from a power plant.

5. Determine the equivalent resistance of a 6.0 Ω and a 8.0 Ω resistor if …
The math to calcuate this question would be to add both equivalents
6.0 + 8.0 = 14.0 ohms

skycraft make up

Process Work & Post Crit

Materials - 

mic, touching it causing the light to react signifying it works

relay built with package materials, clicking signifying it works 

street light, powered by outlet and 3 wires to each color

arduino with cables attatched to gnd and 5v as well as 9, 10 , 11 for diff relays

connecting 3 relays to arduino and breadboard 

testing relays

connecting mic to arduino and breadboard

testing it on street light

soldering and stretch wrapping arduino and wires 

adding potentiometer to control volume sensitivity 

Fitting it all in a box, drilling holes in box for wiring and potentiometer

building hanger on back of street light to hang from door using metal rods, rope, hooks, and screws

final testing

testing lcd screen on breadboard before soldering

labeling wires to pins with tape to ready for soldering

soldering wires to arduino and breadboard adding shrinking wrap to keep wires together and organized

expiriencing problems with lcd screen due to short 

testing lcd screen after soldering after fixing short

testing reverse code on red light 

final look on door ready for presentation

documentation

Overall satisfied with the final process.

Feed back recieved included using different words in the LCD screen
perhaps having it switch with a relay depending on the light triggered.
Changes - red light was reverse coded and LCD screen was soldered on to give a more
visual representation of the process occuring. Conceptually I felt it added to the project more
because people were better able to interact with project by simply knocking.
A couple shorting problems occured but were able to be fixed by clipping away touching solders

Motors - Adafruit Lesson 15 DC Motor with Potentiometer - Servo Sweep & Knob

Servo Motor Exercise: Oct. 1st

Additional documentation of the Servo Motor with a Potentiometer exercise.

11/19 class work

Touch Screen

evidence of soldering

manga 156-195

1. What is an example of a semiconductor device?

Diode



2. Why is silicon used in the manufacture of semiconductors?

a silicon crystal does not have electrons that can move freely so electricity hardly passes through it



3. Discuss the difference using an example of the difference between and N-type and P-type semiconductor.

n types have no holes and negative charge while p have a a whole for valence electrons

in p types the whole becomes the carrier of electricity


4. In your own workd describe what a dioode does and the role of N and P type semiconductors.

diodes are a p type and n type semiconductor combined to make a p n junction,

they attract each other and allow current to flow in only one direction



5. What is rectification?

allowing current to flow in only one direction



6. What causes color in an LED? Give and example of what causes a particular color.

electrons and holes join near the pn junction and vanish the energy that is produced causes color in the led. wavelength controls the color,

white light - phosphor down-conversion1 is most commonly based on a blue or near-ultraviolet emitting die that is combined with a yellow-emitting phosphor,

7. What is the relationship between base current and collector current in a transistor?

electrons in connector are drawn to positive poles where they acmalate while electrons in the emitter the negative and accumulate to the base.



8. What are the advantages of a transistor over a switch?

transistors require no contact so it can be fined tuned and better controlled, less likely to fail

manga 90-116

What is the relationship between heat and electricity. Please provide a metaphor.

elelectricity genrates heat bc the atoms that make up a substance are always vibrating. Temperature correspond to how fast atoms vibrate. Thus electrical wire is used to flow electrons bc it has little resistance making its temperature near a state of rest.

Why is it warm near an incandescent light bulb?

light emission due to thermal emission mostly ends up becoming heat

What is a superconductor? What are they used for in real life? You may have to look this up. How could one make a metal a superconductor?

superconductor is a material that has zero electrical resistance due to being below a critical temp (close to absolute zero) 

They can be used in MRIs or particle accelerators. lower temperature.

What is Ampere's Law?

magnetic fields create a circular pattern around wire if you point your right thumb in direction of current your fingers curl in direction of magnetic field is generated


If current of the same size flows in the same direction in two electric wires placed side by side, what happens?

2 magnetic fields are combined to one big magnetic field, s force of attraction causes the the two wires to attract each other


What happens if current of the same size flows in opposite directions in two electric wires placed side by side?

force of repulsion causes two magnetic waves to negate each other

ch 3.5, 3.6

DIY Potentiometers

1.  

- 24mm body

- carbon element, not sealed

- below 5$

- not an upgrade compared to others

2.

- looks like standard but cost 10$

- low friction

- otherwise not much different than standard besides logo

3.

- sealed

- conductive copper element 

- cost the same a EVH but offers more

4. 

-other than look not much different than 82 vintage

Ada Fruit Hbridge reversing motor Lesson 15

RFID

RFID

Wave shield

Soldered the shield and made the wave shield work 

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