08/31 Arduino Ladyada Exercises 0-3 & 5

Exercises 0-3: Lesson 0 was simply lighting the board, and I started at 1 instead of 0. The other segments are just the step by step given through the Ladyada Lessons

Exercise 5:

8/31 Ohms Law

8/31 ohm's law answers

8/31 ohm's law

8/31 ohms law

08/31 Ohm's Law Exercise

Ohm's Law

8/31 Ohm Law Answers

1. C
2. C
3. C
4. D
5. A
6. B
7. D
8. D
9. E
10. D

8/31 Ohm's Law Problems & Work

8/31 Ohms Law

8/31 mysterious resistance

orange, orange red Gold
4            4       00  +/- 5%=4180 to 4620



Yellow, Blue, Red
 462       4600
46*5%=230
4600+/-230=4320 to4830


Yellow, Brown, Black, Gold
410 +/-5%=38.95 to 43.05


 Yellow, Purple, Black
470
47*%5=2.35
47+\-2.35=44.65 to49.35

Green, Orange, Red, Gold

5300+/-5%=5161to 5439

8/31 - Ohms Practice

8/31 ohm's law quiz

8/31 Ohm's Law Problems - In Class Exercise

Ohm's Law Problems Simple questions based on the law V = IR

 

What current would flow through a resistor of 20 ohms connected to a 12 V supply? • [A] 240 A • [B] 1.66 A • [C] 0.67 A • [D] 0.067A

What current would flow through a resistor of 40 ohms connected to a 10 V supply? • [A] 400 A • [B] 4 A • [C] 0.25 A • [D] 0.025A

A 100 ohm resistor is connected to a 20 V supply. What current flows? • [A] 0.02 A • [B] 0.05 A • [C] 0.2 A • [D] 0.5 A • [E] 2000 A

What value of resistor would be used to permit a current of 0.2 A to flow using a 6V supply? • [A] 0.03 ohms • [B] 0.3 ohms • [C] 3.0 ohms • [D] 30 ohms • [E] 300 ohms

What supply voltage would be needed to provide a current of 1.2 A through a 40 ohm resistor? • [A] 48 V • [B] 480 V • [C] 0.3 V • [D] 0.03 V

A resistor allows a current of 0.6 A to flow when connected to a 9.6 volt supply. What current would flow if the same resistor was connected to a 12.8 V supply? • [A] 0.2 A • [B] 0.8 A • [C] 22.4 A • [D] 6.4 A

Calculate the voltage supply needed to produce a current of 12A when used with a 48 ohm resistor. • [A] 0.25 V • [B] 4 V • [C] 60 V • [D] 576 V

Calculate the voltage across a 300 ohm resistor when a current of 0.004 A flows through it. • [A] 0.012 A • [B] 0.012 V • [C] 0.12 V • [D] 1.2 V • [E] 12 V

Find the size of resistor which would allow limit the current to a value of 0.02 A when connected to an 8 V supply. • [A] 0.16 ohms • [B] 1.6 ohms • [C] 16 ohms • [D] 40 ohms • [E] 400 ohms

Calculate the current that will flow when a total resistance of 500 ohms is placed in a circuit which has a 15 volt supply. • [A] 0.00003 A • [B] 0.0003A • [C] 0.003 A • [D] 0.03 A • [E] 0.3 A

 

8/31 Ohm's Law Quiz

8/31 - Ohms Law Quiz

8/31 Mystery Resistors In Class Exercise

Resistor 1:
Brown  Black  Black  Gold
1              0         0      0.05%

10Ω +/- 0.05% = 9.5 - 10.5Ω

Resistor 2
Orange  Orange  Blue  Gold
  3               3         6      0.05%

33MΩ +/- 0.05%= 31,350,000 - 34,650,000Ω

Resistor 3
Green  Blue  Brown  Gold
  5              6        1      0.05%

560Ω +/- 0.05% = 532 - 588Ω

Resistor 4
Orange Orange Brown Gold
3                3           1    0.05%

330Ω +/- 0.05% = 313.5 - 346.5Ω

Resistor 5
Yellow Violet Brown Gold
4               7          1     0.05%

470Ω +/- 0.05% = 446.5 - 494.5Ω

Resistor 6
Yellow Violet Black Gold
4               7          0     0.05%

47Ω +/- 0.05% = 44.65 - 49.35Ω

Resistor 6
Green  Brown Black Gold
5               1          0     0.05%

51Ω +/- 0.05% = 48.45 - 53.55Ω

8.31.15 mystery resister exercise

Brown black black gold = 10 = 9.5-10.5

Orange orange brown gold = 330 = 313.5-346.5

Yellow violet brown gold = 470 = 446.5-493.5

Green green brown gold = 550 = 522.5-577.5

Orange orange red gold = 3300 = 3135-3365

Red violet red gold = 2700 = 2565-2835

Mystery resisters 8/31 Tatyana & Kelsey

Circuit Board Activity

8/31 - Resistor Exercise

8/31/15 George and Tyra Class Exercise: Resistor Activity

Resistor 1
brown back black gold
10 ohms +/- 5% 9.5 to 10.5

Resistor 2
green blue brown gold
560 ohms +/- 5% 532 to 588

Resistor 3
yellow purple red gold
4700 Ohms +/- 5% 4465 to 4935

8/31 Mystery Resistor Exercise

Green Brown Red Gold
5 1 2 .05
5100 x .05 = +/- 255
5050 to 5355

Orange Orange Brown Gold
3 3 1 .05
330 x .05 = +/- 16.5
313.5 to 346.5

Orange Orange Red Gold
3 3 2 .05
3300 x .05 = +/- 165
3135 to 3465

8/31 - Resistor exercise with Jen and Annie

1. Green, brown, black, gold
Green = 5
Brown = 1
Black = 0
Gold = 5% Tolerance

Resistance = 51 Ohms with 5% tolerance = 51 +- 2.55 = 48.45 Ohms to 53.55 Ohms

2. Orange, orange, brown, gold
Orange =3
Orange =3
Brown = 1
Gold = 5% Tolerance

Resistance = 330 Ohms with 5% tolerance = 330 +- 16.5 = 313.5 Ohms to 346.5 Ohms

3. Orange, orange, black, gold
Orange = 3
Orange = 3
Black = 0
Gold = 5% Tolerance

Resistance = 33 Ohms with 5% tolerance = 33 +- 1.65 = 31.35 Ohms to 34.65 Ohms

4. Green, blue, brown, gold
Green= 5
Blue = 6
Brown = 1
Gold = 5% Tolerance

Resistance = 560 Ohms with 5% tolerance = 560 +- 28 = 532 Ohms to 588 Ohms

5. Brown, black, black, gold
Brown= 1
Black = 0
Black = 0
Gold = 5% Tolerance

Resistance = 10 Ohms with 5% tolerance = 10 +- 0.5 = 9.5 Ohms to 10.5 Ohms

6. Yellow, violet, brown, gold
Yellow = 4
Violet = 7
Brown = 1
Gold = 5% Tolerance

Resistance = 470 Ohms with 5% tolerance = 470 +- 23.5 = 446.5 Ohms to 493.5 Ohms

7. Yellow, violet, black, gold
Yellow = 4
Violet = 7
Black = 0 Gold = 5% Tolerance

Resistance = 47 Ohms with 5% tolerance = 47 +- 2.35 = 44.65 Ohms to 49.35 Ohms


Annie and Jen

8/31 mystery resistor class exercise

brown black black gold

1, 0, 0,  0.5

10 ohms with a 5% tolerance

9.5-10.5

green brown black gold

5, 1, 0

51 ohms with a 5% tolerance

48.5-53.55

yellow violet black gold

4, 7, 0

47 ohms 5% tolerance

44.65-49.35

orange orange brown gold

3, 3, 1

330 ohms 5% tolerance

313.5-346.5

yellow violet brown gold

4, 7, 1

470 ohms 5% tolerance

446.5-493.5

orange orange green gold
3, 3, 5

3300000 ohms 5% tolerance (3.3 megaOhms)

3135000 - 3465000

green blue brown gold

5, 6, 1

560 ohms


532 - 588

Circuit Board - 8/31

probably wrong lol

Arduino 3

http://youtu.be/IEjYurNoDYw

8/31 Circuit Board

8/26 - Exercises 2, 3, & 5

Exercise 2


Exercise 3


Exercise 5

8/26 Arduino Exercises

Exercises

Circuit Board

Circuit Board from CPU

labeled

Lesson 3 Exercises

Lesson 3 Exercises

3-Color LED Blink

https://vimeo.com/137847772

Red and Green LED Blink

Push-Button LED Blink

From class Wednesday:

Slow LED Blink

Fast LED Blink

Resistor

Homework for Monday

Persuse Electronic Symbol page

Read through Chapter 2 in Exploring Arduino pp19-39

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.

My 2 roommates and I used 1301 kwh as a household in the month of July 2015.

This number (kwh) is obtained by multiplying power and usage time. 
1200w x 2hrs = 2400wh = 2.4 kwh
if 1kwh costs 20 yen, running the tea kettle for 2 hours (2.4kwh) will cost 28 yen.

1. appliance, wattage, amps and volts
2. appliance, wattage, amps, and volts

3. appliance, wattage, amps, and volts

4. appliance, wattage, amps, and volts

5. appliance, wattage, amps, and volts

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

Take a break and watch this 1:30 video on electricity. 
Principles of Electricity
http://www.youtube.com/watch?v=sQ9G2OL9ERo 

What is the directional relationship between charge and current?

This is known as Ohm's Law.

DO this experiment or another of your choice if you would like to experience static electricy. http://www.sciencebob.com/experiments/staticroll.php Please document visually on blog 

I had trouble figuring out which experiment you wanted us to do since the link was not working.  I found an experiment using static electricity to bend water and one using static electricity to make a dancing ghost.  

Reading Responses 8.31.15

Manga Guide

• Voltage: difference in potential
• AMP: unit representing electrical current
• current: amount of electricity flowing through electrical line
• watt: unit representing electric power (consumed power)
• power (W) = voltage(V) x current(A)
• A = W/V
• Safety Breakers in the box thingy with switches are used to stop when there is too much electricity flowing through
• Rated Current: value determined for normal electrical outlet

Chapter 2 Arduino

• Anode is the positive side and cathode is the negative side.
• Resistance is how easy or how difficult the current can flow. this is determined by resistors that resist current. It can be like a pipe that lets a lot of water through (low resistance) or very little water (low Resistance)
• Ohm’s Law
• voltage difference in volts (V) = current in amps(I) x Resistance in ohms(R)
• Can be used to figure out which resistor value to use by solving for R
• R = V/I
• A common power rating for resistors is 1/8 of a watt (abbreviated as W, milliwatts as mW)
• Power in watts(P) = IV