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R -> Rafael

Light Paint e divertido.

thanks BK for attacking NYC

 

Theory Propaganda, MD-FCB-CAF, .ELNA, BubbaBoomsticks, Bytedust, Riot68, Resistor, Wheeler Lifton, ti.tiki., crevicecreeps, SNUB23, DRYPnz, xnhungx, rrrr.aybs, bazooka bill!, COLANTE, Tickyâ„¢, Kandycore, fixxa, Orticanoodles, .88 Proof, Bo Neminus, MORG, EXPT, biafrainc, Hargo (Obey tribute), ..CASPA..DBK.., JShine, nasty guy, RobotsWillKill, Discoshit., artoo_r2, *Abuze420*, The Slobtastik One, Under Water Pirates, Lord Leigh (MANO), Melvind VS The GC Four, Subhumanoid, Stick-A-Thing, (JK.), 14Bolt, Azione VS Booty, Guar2007, trashisfesch, SR, Josh?, TEN13ONE, Billi Kid Brand, XNY, PEEL HERE, roy_gbl, ToyEater, Sparky Superfly, hope, fokusedempire178, CATV, lazynachos, sketch3030, SAM CHOI, El Bokom and orphinator!

This is the eyelet board for my tweed Champ replica. Carbon comp resistors, Orange Drop caps, cloth covered wire, it has all the voodoo stuff.

 

Follow the building process here!

  

Photo by Noortje.

100 ohm, 1/4 W resistor.

 

As seen on Alpha Clock Five!

 

From an article about power dissipation, on our blog here.

'Scuse the handwriting, bro. ;)

 

A simple, quick, and very cheap circuit to turn on an LED when it gets dark. Read more about this project here.

Some of the Geeky Bling which was made at Moem's workshop Geeky Jewelry (in which the participants make earrings, bracelets, pendants, amulets and assorted bling from shiny electrical components and computer parts).

Perth, Western Australia.

Featuring: tigapics, branded, reetbot, phook, bytedust, 14bolt, billikid, delme, suspecto, buddy barbados, bell, ciah, riot68, resistor, 7ad, lare, 2tone

See it big: www.flickr.com/photo_zoom.gne?id=2062019706&size=l

This is the initial piece in the Hi Tek series, and the result of a grant we received from a large electronics manufacturer. The concept behind this piece addresses the transitory nature of value. The components used in this piece have a combined value of well over $10,000. Because they had been deemed "non-conforming" (they don't meet specification) their value immediately became zero. By using the components in a piece of jewelry value is reinstated. Its all in how you look at it.

now available in the Sternlab store

The first scratch-built component for my current project is just about ready. It is all soldiered (and yes, I've tested all the connections).

 

Next up is wiring up its partner and then linking the two together.

A simple, quick, and very cheap circuit to turn on an LED when it gets dark. Read more about this project here.

Open up a computer mouse and this is what you'll find inside. This is from our article on how computer mice work.

 

Compare with our photo of the parts inside a ball and wheel mouse.

 

Our images are published under a Creative Commons Licence (see opposite) and are free for noncommercial use. We also license our images for commercial use. Please contact us directly via our website for more details.

 

NYC Resistor: Ranjit Bhatnagar, Astrida Valijorsky, Mimi Hui, and Catarina Mota

 

Title: The Resistor Jeltone

 

Edible working toy piano.

 

Mold: aluminum, food safe Delrin, acrylic lined with plastic wrap

 

Flavors: tangerine, coconut, raspberry, blueberry, ginger, and green tea

While i was waiting for the others to finish painting i got some some stickers up ;) ...

 

rrrr, bytedust, riot68, foob, uwp, snub, 14bolt, air, scaaf, billikidbrand, solve, trashisfesch, delme, resistor, farm, swiv, tarkinson, eazart, ape platoon, atp, caspa, sesh...

  

boston, massachusetts

1960s

 

teradyne automatic resistor test instrument r103

 

teradyne was founded in 1960 by alex d'arbeloff and nick dewolf. more information available here: en.wikipedia.org/wiki/Teradyne

 

part of an archival project, featuring the photographs of nick dewolf

 

© the Nick DeWolf Foundation

Image-use requests are welcome via flickrmail or nickdewolfphotoarchive [at] gmail [dot] com

Some of the Geeky Bling which was made at Moem's workshop Geeky Jewelry (in which the participants make earrings, bracelets, pendants, amulets and assorted bling from shiny electrical components and computer parts).

A prototype of our easy to keep organized resistor kit.

(I didn't turn the light off-- I just cupped my hand over it.)

 

A simple, quick, and very cheap circuit to turn on an LED when it gets dark. Read more about this project here.

I think this is a burned out resistor. If so, what was it's resistance? Too charred to tell?

Electric circuits, resistance/resistors, current and Ohms Law were all under investigation in an Introduction to Physics Lab/Class taught by Tabatha Collins on February 25, at the Cutler Science Center. 2021, Photography by Glenn Minshall.

Rollei 35 LED

German viewfinder camera, produced 1978 ~ 1980.

 

For those of you craving to see a glimmer from what is inside the Lens assembly, here is your chance !

 

The Stop Ring removed and its rear visible.

On that Ring are 2 tracks. One a copper track, the other a resistor track.

Visible behind that, still in the lens tube, the wipers for those tracks.

 

This assy measures the position of the diaphragm for the coupled lightmeter.

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WARNING :

This image is intended as a reference for the more experienced camera service man. If you have no experience in camera repair please do yourself a favor and send your camera to a professional service shop. It would be a pity to lose a vintage camera in a failed repair attempt !

 

Photo taken with Helsinki Hacklab public lab cam.

Arduino UNO does PWM (pulse width modulation) – 16mm scale.

 

This test board has a UNO configured to provide 6 PWM servo outputs as a microcontroller for points (turnouts) and/or signals on my 16mm scale narrow gauge exhibit. Two vero strip boards incorporate the required crossovers to provide Futaba/Hitec/etc format servo pinouts on the UNO’s digital output sockets.

 

Each of the UNO’s analogue inputs is held at intermediate potential by a pair of 1 Kohm resistors. The remote commander has a 20 foot wander lead and its four momentary push buttons short out one or other 1 Kohm resistor to take the analogue input to LOW or HIGH potential as a tri-state switch. The UNO picks up the change in potential and moves the corresponding servo through the number of degrees pre-programmed in the sketch, via the selected PWM output.

 

This basic setup will enable the option of automated signal and point control on the 16mm scale exhibition layout by linking the UNO's analogue inputs to other sensors.

More info on these obscure electronics tools in this post.

Special "High Stability" resistors with an extra pink band (sometimes called "salmon") to indicate their superior quality. From left to right, a modern 4.7kΩ for comparison, a 68kΩ, a 3.3kΩ, two 56kΩ, a 220kΩ and a 2.7kΩ. All are 5% tolerance (gold band) apart from the 56kΩ, which are 2% tolerance (red band). The modern resistor is a metal film type, but the older ones are carbon composition. They were wax coated for moisture-proofing.

simian says el chriso dryp ticky gumb. mayor anker crew tigapics resistor vlt suspecto super rafa me_love 2tone himbaer yelz elna lazynachos liquid night whitedog bobby bonuS starhead boy mushy mushroom

Sigma 50mm 2.8 Macro K-50 + AF360FGZ

  

A photo-resistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photo-resistor decreases with increasing incident light intensity; in other words, it exhibits photo-conductivity. A photo-resistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits.LDR (Light dependent resistor), as its name suggests, offers resistance in response to the ambient light. The resistance decreases as the intensity of incident light increases, and vice versa. In the absence of light, LDR exhibits a resistance of the order of mega-ohms which decreases to few hundred ohms in the presence of light. It can act as a sensor, since a varying voltage drop can be obtained in accordance with the varying light.LDR Light Sensor as Lamp Switch Using LED-

 

Material Used for Making LDRAn LDR or photo-resistor is made of any semiconductor material with a high resistance.It is made up of cadmium sulphide (CdS).An LDR has a zigzag cadmium sulphide track. It is a bilateral device, i.e., conducts in both directions in same fashion.Lead sulphide (PbS) and indium antimonide (InSb) LDRs (light-dependent resistors) are used for the mid-infrared spectral region. Ge:Cu photoconductors are among the best far-infrared detectors available, and are used for infrared astronomy and infrared spectroscopy.LDR Light Dependent Resistor using Photo Diode-

 

Suggested Further Readings for Students:-

Types of Resistors1.Fixed resistors:

 

Carbon Composition Resistors

 

Carbon film resistors

 

Metal Film resistor

 

Wire wound resistor

 

Thin film and thick film resistors

 

Surface mount resistor (SMT)

 

Network resistors

 

2. Variable resistors Semi variable resistors

 

3. Special resistors Thermistors

 

LDR - Priciple Of Working -How an LDR works? -Explain Working Of LDR with example.A photo-resistor is made of a high resistance semiconductor. In the dark, a photo-resistor can have a resistance as high as several megohms (MΩ), while in the light, a photo-resistor can have a resistance as low as a few hundred ohms.It is first necessary to understand that an electrical current consists of the movement of electrons within a material. Good conductors have a large number of free electrons that can drift in a given direction under the action of a potential difference. Insulators with a high resistance have very few free electrons, and therefore it is hard to make the them move and hence a current to flow.LDR-Resistance variation In Presence Of Light-

 

LDR has a high resistance because there are very few electrons that are free and able to move - the vast majority of the electrons are locked into the crystal lattice and unable to move.

CONTINUE READING »

 

via IngenuityDias www.ingenuitydias.com/2016/01/photo-resistors-or-light-de...

Resistors are all 1/8W. Capacitors are axial ceramic. Transistors are TO-92 2N7000 N-channel FETs. Cycle rate is set by the .47uF capacitor and the 33K resistor. The circuit will run on other voltages and with other color LEDs, but will require adjustment of the 300 ohm current limiting resistor.

I love this tool, you put the points on the pcb to get the distance, then bend the leg around the tool. Perfect spacing every time.

12" x 24"

 

Technical Difficulties

March 13th thru April 3rd

Opening reception Friday March 13th, 6:00PM - 10:00PM

Featuring Dave Crosland, Erik Siador, gaNyan, Jawa, Joshua Herbolsheimer , Matt Linares, Ninjagrl, Peabe, phoneticontrol, Ryan De la Hoz, Stuter

 

Component List

 

Resistors

3M3 x 2

1M

47K

10K

4K7

1K

 

Ceramic Capacitors

22pf

47pf

1N x 2

10N

100N x 4

 

Electrolytic Capacitors

10UF

220UF

2200UF

 

Semiconductors

1N4148 diode

2N3904 xstr

BC109C xstr

LM386 ic

 

Misc

 

AM tuning capacitor with shaft extension.

10K switched potentiometer

64R miniture speaker

Knob large and small

Batt holder AA x 3

Battery clip PP3

Wire Black 1500mm

Red 600mm

Yel 600mm

Green 300mm

Enamaled 7500mm

TC 900mm

 

All these componente are available on the KRC website.

www.kitradio.co.uk/page8.htm

A simple, quick, and very cheap circuit to turn on an LED when it gets dark. Read more about this project here.

delme, welt, seven 02, resistor, numbear!, tophat, surgen, happy, mushie, 14 bolt, riot 68, chopsticks, metrik, Too 8pe, theory, dr. 1, biafra.

 

ready to be put up somewhere.

Diagram of the NYC Resistor Network as of July 2009

1 2 3 5 7 ••• 79 80