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Resistance is Futile, Unless Using Ohm's Law, Hak5 1719

Order: Reorder
Duration: 21:24
Updated: 24 Dec 2014

This week on Hak5, Shannon is calculating resistance with Ohm's Law, and explaining how resistors work in small electronic circuitry. Happy Holidays!! What is Ohms law? It comes from Georg Ohm, a scientist who defined resistance by calculating voltage and amps. V = I * R ---- V = voltage in volts, I = current in amps, and R = resistance in ohms. The voltage is the amount of electric current that's being held inide the circuit. Ohm is the resistance, the narrowness of a channel where the electricity flows through (like a bunch of traffic cones cutting off a lane - it creates some traffic). The flow (or speed, or current) of the electricity ends up being the amp. So if the resistance goes up in size (as in more lanes are cut off), then the amp speed goes down, because it becomes slower. Now, we can use this math to create future currents. If you have a 12v battery, and an LED light with 22mA current, then you'd do this: 12volts / 0.022A = ? ohms? = 545 ohms. So you'd want to use a resistor with 545ohms or higher of resistance. You can find HUGE packs of resistors on Amazon and tons of other places, and they usually have several different values in a pack. Common ones include: 0, 1.5, 4.7, 10, 22, 47, 100, 220, 330, 470, 680, 1k, 2.2k, 3.3k, 4.7k, 10k, 22k, 47k, 100k, 220k, 330k, 470k, and 1Mohms. If you need a specific resistance, you can either buy that one or if it's not available, you can stack them up together in a 'series' and the resistance value simply adds up. Resistance is measured in Ohms, which is a unit from the International System of Units. Ohms are usually spelled out in thousands- such as 1000ohms would be 1kilohm, or 3,000,000 ohms would be 3Megaohms. Resistors have a never-changing electrical resistance. The resistor's resistance limits the flow of electrons through a circuit. They only consume power, they can't create it, so they are called Passive components. Resistors are usually added to circuits where they complement active components like op-amps, microcontrollers, and other integrated circuits. Commonly resistors are used to limit current, divide voltages, and pull-up I/O lines. Resistors are shown as squigglies or a rectangle with two straight lines on both ends whenever on a schematic. They'll usually be called R# for the name, and under it you'll see the value in ohms, like 1kohm. Choosing a resistor is important: there are several different types - vary in value, size, and look. Through-hole resistors are like mine. They have long leads that you can cut shorter as needed. You can solder the leads too. The "axial package" is the plastic part. The bigger ones are 1/2W, smaller ones are 1/4W. This is called the "power rating". A power rating tells you tells you what rate the electric current is turned into something else. If you have a 75W light bulb, it's turning electricity into light at 75 watts. With resistors, the electricity is turned into heat. If you have too much heat going to a component, you get fire. Calculate the power rating, if it's not obvious from the size or if you can't find it listed, by taking P (power) = I (amps or current) * R (resistance). Surface-mount resistors are the other kind. These are tiny black rectangles that have silver solder points on their edges. These are more common in mass production, where a robot does all the work. Resistors are made up of carbon, metal, or metal-oxide film. If we stripped off the outside part of a resistor, you'd see the carbon-film wrapped around an insulator. The more wraps you get, the more resistance it has. Color coding matches the resistance and tolerance of the resistor. A good resistor pack will come with a color code graph for the bands. Mine has up to 5 bands, with the first three being the first 3 values, the 4th being the multiplier, and lastly being the tolerance (+ or - a percentage, because no resistor if going to be made absolutely perfectly, they may be off by a bit of an ohm). So match the first three bands... then multiply (reminder: 10 to the power of 2 means you add two 0's. 10 to the power of 7 means you add seven 0's to the end). Surface mount resistors use a different type of code, so refer to online guides for those. We'll discuss parallel resistors and resistor networks later on as we build complicated robots. These are the Sunfounder kits I've been using: here and here.

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BUTT CHECK! (1.13.14 - Day 1719)

Order: Reorder
Duration: 11:55
Updated: 04 Sep 2014
author: CTFxC

Free Netflix for the CTFxC http://Netflix.com/CTFxC Get the posters at http://CTFxCmerch.com (↓↓ click show more ↓↓) Twitter Charles - http://twitter.com/Cha...

http://wn.com/BUTT_CHECK!_(1.13.14_-_Day_1719)

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FDNY: 3/7/12 Brooklyn: 4th Alarm 1719 West 6 St.

Order: Reorder
Duration: 15:16
Updated: 29 Aug 2014
author: NYRRT84

3/7/12 Brooklyn: 4th Alarm Box 3403 1719 West 6 St. - Kings Highway Fire was in a 1 story 30x80 commercial furniture store.

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Sibelius - Mazurka, Op.81 No.1: Antonio Stradivari, 1719 'Duke of Alba'

Order: Reorder
Duration: 2:34
Updated: 05 Sep 2014
author: Kriangsak Raksadeja

Mazurka, Op.81 No.1: played on Antonio Stradivari, 1719 'Duke of Alba'

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Ouro e Cobiça (Ouro Preto, 1719) - Histórias do Brasil (5/10)

Order: Reorder
Duration: 26:33
Updated: 03 Sep 2014
author: tvbrasil

O artesão Manuel Correia confecciona pequenas imagens de santos. Já há cerca de vinte imagens prontas nas prateleiras da oficina, mas Manuel ainda precisa te...

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1719 Read Avenue Chattanooga, TN 37408

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Duration: 0:55
Updated: 28 Aug 2014

Striking curb appeal, an open concept floor plan, and a spacious backyard are the hallmarks of this charming Southside, Chattanooga home. For more info, call the number below: Jim Lea with Keller Williams Realty Direct: 423-664-1610 Office: 423-664-1600 Email: info@leateamhomes.com Each office is independently owned and operated

http://wn.com/1719_Read_Avenue_Chattanooga,_TN_37408

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Rare-Earth Metals - Autoline This Week 1719

Order: Reorder
Duration: 27:52
Updated: 22 Jun 2013

Today's hybrid and electric cars are famous for their double digit mpgs. They get those great numbers, in part, by a combination of products under the hood that start in the earth's crust. That's where 17 chemical elements in the periodic table are found which go into lasers, rare-earth magnets & batteries that help power our 21st century transportation. Joining John McElroy on our Autoline expert panel is Kevin Moore, a Rare-earth metals consultant, Dr. Edward Becker who was GM's Rare-earth expert before retiring and Jack Lifton co-founder of the company Technology Metals Research. Get more video everyday at http://autoline.tv

http://wn.com/Rare-Earth_Metals_-_Autoline_This_Week_1719

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25MAY 1719 TV8 RONALD GAMARRA, EMPRESARIO MARTÍN BELAÚNDE LOSSIO FUGÓ DE BOLIVIA 1

Order: Reorder
Duration: 9:55
Updated: 25 May 2015

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IMG 1719

Order: Reorder
Duration: 3:07
Updated: 27 Apr 2015

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IMG 1719

Order: Reorder
Duration: 0:30
Updated: 30 Aug 2014

Descrição

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IMG 1719

Order: Reorder
Duration: 0:32
Updated: 18 Feb 2013

Test mit Ghost Cars3

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IMG 1719

Order: Reorder
Duration: 0:06
Updated: 10 Apr 2015

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MVI 1719

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Duration: 0:28
Updated: 06 Nov 2011

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MVI 1719

Order: Reorder
Duration: 0:09
Updated: 18 Jun 2015

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100 1719

Order: Reorder
Duration: 1:18
Updated: 29 Jun 2014

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180513 1719

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Duration: 1:37
Updated: 14 Jun 2013

los del sur en tunja

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MPG 1719

Order: Reorder
Duration: 2:47
Updated: 11 Jul 2013

vô de Itanhaem

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VID 00030 20120414 1719

Order: Reorder
Duration: 0:14
Updated: 22 Jun 2012

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Campagne de France - ETW - Episode 5 : Les derniers Iroquois (1717-1719)

Order: Reorder
Duration: 10:00
Updated: 21 May 2014
author: Baal37000

Alors que la Grande-Bretagne déclare une fois encore la guerre à la France, le Général Auguste Beauchamp, commandant de l'Armée du Québec, décide d'une campa...

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IMG 1719 MOV

Order: Reorder
Duration: 0:21
Updated: 22 Aug 2014

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MVI 1719 MOV

Order: Reorder
Duration: 0:47
Updated: 02 Mar 2015

Kookles bij ISDC

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Hans Villius Berättar - Armfeldts Karoliner, enn veritabel dödsmarsch 1719.

Order: Reorder
Duration: 3:47
Updated: 14 Nov 2014

Armfeldts Karoliner - En veritabel dödsmarsch - Berättare : Hans Villius

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SAL's Heaviest Lift Ever: 8 Reactors from Japan to Trinidad

Order: Reorder
Duration: 6:03
Updated: 10 Jul 2013
author: SAL Heavy Lift

MV "Lone" delivers reactors for RPLC Deep Conversion Project.

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photo: AP / Evan Agostini

Actress Jennifer Garner attends a special screening of "Alexander and the Terrible, Horrible, No Good, Very Bad Day" on Wednesday, Oct. 1, 2014, in New York.

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Jennifer Garner -- 'Fed Up' with Ben's Gambling, Drinking

TMZ

01 Jul 2015

Jennifer Garner reached her breaking point with Ben Affleck's drinking and gambling, and that's why she called pulled the plug on their marriage ... sources connected with the couple tell TMZ. Our sources not surprisingly have 2 views of what happened ... some align with him and some with her. The Jen sources say Ben's drinking and gambling have escalated over the last few years to the point "she couldn't take it anymore." ... See also ... > ... ... ....

photo: AP / Evan Agostini/Invision

File - Actors Michael Douglas and wife Catherine Zeta-Jones attend the 41st Annual Chaplin Award Gala honoring Rob Reiner at Avery Fisher Hall on Monday, April 28, 2014 in New York.

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Michael Douglas: I was sorry for effect of oral sex cancer comments on my wife

The Guardian

29 Jun 2015

Behind the Candelabra star tells Event magazine he ‘regretted the embarrasment’ to Catherine Zeta-Jones of his comments about oral sex and cancer given in a 2013 Guardian interview. ‘It was one of those things’ … Michael Douglas. Photograph. Clarius Entertainment/cour/R/Clarius Entertainment/cour/R. Ben Child. @BenChildGeek. Monday 29 June 2015 09.48 BST ... Related. Michael Douglas. oral sex caused my cancer ... “And her family.” ... Related ... Related ... ....

photo: WN / Ahmed Deeb

Palestinian militants of the Ezzedine al-Qassam Brigades, Hamas's armed wing, parade in Rafah, southern Gaza Strip, on May 29, 2014.

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Islamic State threatens to topple Hamas in Gaza

The Times of India

01 Jul 2015

CAIRO. Islamic State insurgents threatened on Tuesday to turn the Gaza Strip into another of their Middle East fiefdoms, accusing Hamas, the organisation that rules the Palestinian territory, of being insufficiently stringent about religious enforcement ... "The rule of sharia (Islamic law) will be implemented in Gaza, in spite of you ... "There is cooperation between them in the realm of weapons smuggling and terrorist attacks ... ....

photo: AP

Police stand over David Sweat after he was shot and captured near the Canadian border Sunday, June 28, 2015, in Constable, N.Y.

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A manhunt that found its targets

CNN

29 Jun 2015

(CNN)The question everyone is asking, now that the two Dannemora, New York, fugitives are no longer on the run, is. What took the cops so long?. It's the wrong question. The real question we should be asking is. How is it possible that nobody, other than the fugitives, got hurt? No one from law enforcement. No one from the public. Not a single injury, not a single fatality ... Philip Lerman. There's certainly an element of luck involved ... ....

photo: AP / Majdi Mohammed

Saudi billionaire Prince Alwaleed bin Talal, waves as he arrives at the headquarters of Palestinian President Mahmoud Abbas in the West Bank city of Ramallah, Tuesday, Feb. 4, 2014.

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Saudi prince pledges to donate entire US$32billion fortune to charity

South China Morning Post

02 Jul 2015

Saudi tycoon Prince Alwaleed bin Talal has promised to give his entire US$32 billion (HK$248 billion) fortune to charity in coming years, in one of the biggest ever such pledges. The pledge is “maybe... the first such big announcement” of its kind in the region, and is modelled on a charity established by Microsoft founder Bill Gates in the United States, the prince told reporters on Wednesday ... “I assure you my health is good.”. ....

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Indian shooters' winning spree continues in ISSF Junior Cup

The Times of India

30 Jun 2015

NEW DELHI ... This was India's fifth silver medal in the competition ... The troika of Gauri Sheoran, Shreya Gawande and Chinki Yadav shot a combined score of 1719 to finish behind the gold medal winning Russian team and the silver medal winning team from Korea ... ....

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Shukla wins gold, silver for Akhil in ISSF Junior Cup

The Times of India

30 Jun 2015

NEW DELHI. Shivam Shukla on Tuesday won his third gold medal while Akhil Sheoran added a silver as India's tally rose to an impressive 13 at the ongoing 2nd ISSF Junior Cup shooting tournament in Suhl, Germany ... The troika of Gauri Sheoran, Shreya Gawande and Chinki Yadav shot a combined score of 1719 to finish behind the gold medal winning Russian team and the silver medal winning team from Korea ... ....

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Austin liquor sales take big jump in May: See who sold the most booze

The Business Journals

30 Jun 2015

1701 RED RIVER ST AUSTIN 78701 5/1/2015 $7,362.63 $109,703.19 THE HIDEOUT PUB 12164 N MOPAC EXPRESSWAY AUSTIN 78758 5/1/2015 $7,346.34 $109,460.47 J BLACK'S 710B W 6TH ST AUSTIN 78701 5/1/2015 $7,334.69 $109,286.88 CHEERS SHOT BAR 416 E 6TH ST AUSTIN 78701 5/1/2015 $7,327.72 $109,183.03 LONG PERFORMING ARTS CENTER 701 W RIVERSIDE DR AUSTIN 78704 ......

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A Turkish link with Madras

The Hindu

28 Jun 2015

“In this perspective, the house of the first missionary of the Danish-Halle Mission, Bartholomaeus Ziegenbalg (1682–1719) and the New Jerusalem Church (1707–1718), both in Tranquebar, as well as the Augustus Church in Trappe (PA) built according to plans by Heinrich Melchior Mühlenberg from 1743 to 1745, the oldest Lutheran church ......

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Lane Closure Report for July 29 - July 5 (Texas Department of Transportation)

Public Technologies

26 Jun 2015

(Source. Texas Department of Transportation). Contact. Paul Braun. Phone. (806) 356-3256. Date. June 18, 2015 ... On US 87, expect lane closures in the right lane from Amarillo Creek to FM 1719 for pothole repair ... Motorists will be detoured to Western Street and Farmers Avenue ... distributed by....

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Learn about wheat, legumes at Spillman Agronomy Farm day (Washington State University)

Public Technologies

24 Jun 2015

(Source. Washington State University). By Emily Smudde, WSU Crop & Soil Extension. PULLMAN, Wash. - The Washington State University 2015 Spillman Agronomy Farm field day will be held July 14 at the Spillman Agronomy Farm in Pullman ... The lunch program will feature Dr ... The field presentations will include. Targeted Wheat Improvement - Dr ... Emily Smudde, WSU Crop & Soil Extension, 509-335-1719, emily.smudde@wsu.edu distributed by ... (noodl....

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Semiconductor Industry Applauds Congressional Approval of Trade Promotion Authority Senate joins House in passing legislation to facilitate economy-boosting free trade agreements; President Obama expected to quickly sign legislation into law

PR Newswire

24 Jun 2015

WASHINGTON, June 24, 2015 /PRNewswire-USNewswire/ -- The Semiconductor Industry Association (SIA), representing U.S. leadership in semiconductor manufacturing and design, today applauded Congress for approving bipartisan Trade Promotion Authority (TPA) legislation. TPA will strengthen the U.S. semiconductor industry and our economy by paving the way for passage of free trade agreements ... TPA empowers U.S ... In 2014, U.S ... 202-446-1719 ... ....

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SIA, Broad Coalition Call for Government Policies That Drive Innovation More than 250 organizations sign document urging policymakers to invest in research, education, advanced manufacturing

PR Newswire

23 Jun 2015

WASHINGTON, June 23, 2015 /PRNewswire-USNewswire/ -- The Semiconductor Industry Association (SIA), along with a coalition of more than 250 technology, business and academic leaders, today called on government leaders to enact a set of policies that promote growth and innovation. The groups outlined these recommendations in a document called "," which is aimed at federal policymakers ... Media Contact. Dan Rosso ... 202-446-1719 ... About SIA ... ....

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·ANNOUNCEMENT REGARDING RESOLUTIONS AT THE 2014 ANNUAL GENERAL MEETING AND THE FI... (China Merchants Bank Co Ltd)

Public Technologies

19 Jun 2015

(Source. China Merchants Bank Co Ltd). Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement ... 03968) ... on 19 June 2015 ... 0.1719%....

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Wineries Near Philadelphia (Visit Philadelphia - The Greater Philadelphia Tourism Marketing Corporation)

noodls

17 Jun 2015

(Source ... A Robust Selection Of Wineries Entice Visitors To Philadelphia's Countryside ... Brandywine Valley Wine Trail . ... 300 Old Limekiln Road, Chalfont, (215) 249-9058, peacevalleywinery.com Situated on a picturesque tract of land originally deeded by William Penn to his daughters, Rose Bank Winery captures the history of Bucks County with its 1719 manor house and 1835 stone barn that overlook lush pastures stocked with babydoll sheep ... ......

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Close to Home for June 13

Atlanta Journal

12 Jun 2015

You’ve got a few hours over the weekend and are looking for a nearby diversion - something that doesn’t require reservations or a tank of gas. Welcome to Close to Home! Each week we’ll highlight the quick, quaint and quirky events in your neighborhood. Email submissions to communitynews@ajc.com. Camp McDonald Day in Kennesaw. Inaugural Camp McDonald Day events, 7 a.m ... Free ... $10-$15 ... $5 ... Free. RoswellGov.com/index.aspx?nid=1719, 770-640-3855 ... ....

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This Day in History - June 11

Jamaica Observer

11 Jun 2015

Today is the 162nd day of 2015. There are 203 days left in the year. TODAY'S HIGHLIGHT. 2009. The World Health Organization says swine flu is now formally a pandemic, a declaration that speeds vaccine production and spurs government spending to combat the first global flu epidemic in 41 years. OTHER EVENTS. 1509. Troops of Florence take Pisa in Italy. 1675. France and Poland form an alliance. 1685 ... 1719 ... 1741 ... 1891 ... 1898 ... 1903 ... 1963 ... 1967 ... 1969 ... 1970 ... ....

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New survey to be made of Battle of Glenshiel site

BBC News

10 Jun 2015

9 June 2015. From the section Highlands & Islands. The battle was fought in June 1719. Archaeologists are to make a new survey for artefacts from the Battle of Glenshiel to mark the 296th anniversary of the fight. Jacobites supported by Spanish troops clashed with British government soldiers at Kintail on 10 June 1719. Fought over three hours, the clash ended in defeat for the Jacobite force. The battle left its mark on the area ... NTS ... ....

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