About Light flashers/blinkers

This page contains an archive of all entries posted to Gadget Master in the Light flashers/blinkers category. They are listed from oldest to newest.

LEDs is the previous category.

Lighting is the next category.

Many more can be found on the main index page or by looking through the archives.

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Light flashers/blinkers Archives

July 4, 2007

Strobe light not just for Saturday night fever

Thanks to Aaroncake's electronic circuits, we bring you the mighty strobe light.

Aaron, who works as a computer technician, has an extensive collection of gadgets on his site, ranging from the small and inexpensive such as the LED chaser, to the slightly more advanced and intricate, such as the computerised home.

strobe1.JPG

Continue reading "Strobe light not just for Saturday night fever" »

Tesla coil music to our ears

For those musically inclined design engineers, we present the keyboard hooked up to a tesla coil.

We found this video lurking in the depths of Stumble Upon.

Continue reading "Tesla coil music to our ears" »

July 24, 2007

Ring ring ring goes the telephone light flasher

If there's one thing we hate more than track work on the Victoria line, it's not being able to hear the damn phone when it's ringing.

GFphone.JPG

Continue reading "Ring ring ring goes the telephone light flasher" »

August 2, 2007

Bill loved riding his bike at night

That's why he created a 40-LED night light to make sure he could see and be seen on his bike. Bill set up a 555 timer IC to generate a continuous on/off timing cycle to alternatively flash two groups of 20 LEDs. His night light operates on four AA batteries, which will keep the road ahead nice and bright, even on the darkest and chilliest of British nights. You can even extend battery life with a second circuit Bill put together that uses a short duty cycle to flash a single set of 30 LEDs.

bill1.JPG

Continue reading "Bill loved riding his bike at night" »

August 8, 2007

Get moody with the high power LED lamp

Here's a great little circuit that will ensure that electronics engineers the world over will have one of the coolest apartments on the block.

LED%20lamps.JPG

Continue reading "Get moody with the high power LED lamp " »

August 16, 2007

Bright Lightwedge gadget

Loyal Gadget Master reader Louisa sends in this link to what she is sure will revolutionise reading at night time.

books.JPG


Continue reading "Bright Lightwedge gadget" »

August 23, 2007

Lights, camera ... staircase!

From Alan Parekh's tome of knowledge, comes the stair lighting kit.

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Continue reading "Lights, camera ... staircase!" »

September 10, 2007

Lull, the demonic Flower Light

And now for a way to bring some friendly Poltergeist activity to your very own home.

lull.JPG

Continue reading "Lull, the demonic Flower Light" »

September 25, 2007

Automatic headlight brightness switch

Driving with high-beam headlights will ensure your visibility in the coming winter months, but they'll blind any driver who's coming from the other direction.

car1.JPG

Continue reading "Automatic headlight brightness switch" »

October 17, 2007

Give your model train's head lights a boost

Any owner of a model train will tell you that the toy's head lights are, at best, inconsistent and, at worst, terribly ineffective.

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Continue reading "Give your model train's head lights a boost" »

December 7, 2007

Simple Christmas-tree lights tester

Why is that you always test 48 bulbs before you find the bad one in a 50-light string?

xmas.JPG

Continue reading "Simple Christmas-tree lights tester" »

July 21, 2008

Hans' Nixie clock takes a step back in time

GF July 2008 - row of clocks 2.jpgBack in the days of the Berlin Wall, these Nixie tubes were manufactured by a now long-forgotten company. Fast forward to the twenty-first century, and Hans Summers found them stocked by an antique electronics part company.

Originally painted red, the coating from the 4-inch high tubes were painstakingly removed using a craft knife. Using a plain matrix board and wire connections, Hans built the circuit on three boards.

The first holds the rectifier, divide by 50 circuit, seconds counters and seconds driver transistors. The second and third boards hold the counters and drivers for the minutes and hours digit pairs. Now your tribute to East Germany is sure to get past Checkpoint Charlie.

You can read the full details of the project, including a data sheet for the Z568M and details of the construction, on Hans' website.

The Nixie tube

Hans used the Z568M, which is 4-inches high (100mm) and has a digit height of 2 inches (50mm). It is therefore truly a giant amongst nixie tubes, he says, presumably intended for railway clock applications and so on.

Continue reading "Hans' Nixie clock takes a step back in time" »

August 8, 2008

LED lighting and voltage boosting

Solarraysa.jpg
Thanks to Made By Monkeys for highlighting this one - involving a dual-purpose torch / bicycle-light that was eating NiMH cells pretty fast...

Blogger 'Le Magicien' got to work, modding the device. He writes:
I like this torch a lot but... the incandescent bulb eats the NiMH cells pretty fast and the blinking leds... who needs them? So the idea was.. why do not replace the rear red leds with white ones? There's only one problem - white leds do not work with less than 3.2 volts - therefore some kind of voltage booster was needed.

You can read the circuit schematics used in the modified waterproof solar torch, plus some detailed photos of the modification work.

Continue reading "LED lighting and voltage boosting" »

October 28, 2008

Peter plots an LED UFO chaser

      Peter Griffiths - the man who made a lamp into a work of art and turned to LEDs for F1 gantry start-lights - returns with some LED chasing.

This neat little circuit provides 8 LEDs directly driven from the PIC along with a single mode control switch. The firmware described drives the LEDs with a 5 bit PWM signal providing each of the 8 LED channels with four levels of intensity; off, dim, mid, bright. 

A number of sequences are programmed into the firmware to provide some interesting visual effects and chase sequences, including the classic effect seen on the car in the Knight Rider TV series.

Peter says that the design is deliberately simple with each LED being directly driven from a PIC I/O pin.  This and the inclusion of an in-circuit programming header (ICSP) make the circuit ideal for teaching/learning introductory PIC assembly language programming.

However, he writes, if you just want a cool LED chaser without having to write any code, a ready written LED chaser program with fully commented source code and programmer ready HEX files is provided at the bottom of this page.

The circuit has been constructed on a PCB but can easily be built on strip-board, or a solderless breadboard.

Possible apps include an Xmas Tree Chaser and, bending the LEDs through 90°, you have a UFO chaser.


Continue reading "Peter plots an LED UFO chaser" »

May 7, 2009

Build your own LED cube

led cube 1.jpgThis month's featured Gadget Master is provided by an old favourite of the blog, Peter Griffiths. He shares all the details necessary to build your own 5 x 5 LED cube.

Construct your own programmed light display

Once again, the project is fully documented in terms of parts and the build process, and Peter provides a number of photos to help navigate construction.

The project also includes a ready to program HEX file with some demo cube animations and also the source code. The firmware implements a simple macro drawing processor command set, so if you've got some programming skills you can create your own animations for the cube, says Peter.

Although the project uses a PCB, the original prototype was constructed on a prototype pad board so if you're not able to make your own PCB it's still possible to make this project yourself.

Continue reading "Build your own LED cube" »

May 21, 2009

Peggy 2 LED array becomes animated video




Peggy 2, I love you...

Thanks to our technology Editor, Steve Bush, for flagging this one. It dovetails nicely with our recent Build your own LED Cube post, and involves the programming of a colour LED array. A Peggy 2 LED matrix display, to be precise.

There are 625 LEDs in total, with red, green, blue and white LEDs making some giant pixels, and the idea is to create something approximating video, via animation of the "RGB pixels". Check out the video.

Continue reading "Peggy 2 LED array becomes animated video " »

June 8, 2009

MonkeyLectric Video Pro LED bike wheel display

We flagged this one before - SpikePOV - Bicycle LED persistence of vision - with SpokePOV, or "persistence of vision for your bike", being a way to have a bit of fun driving LED lights to improve your bike's visibility.

Well here's another great video of the system in action, featuring 256 RGB LEDs in a 4-spoke system that apparently mounts into standard bike wheels.



Check out www.monkeylectric.com for more info on what the site describes as the most advanced rotating wheel display system in the world.

The basics of the spec include:

Continue reading "MonkeyLectric Video Pro LED bike wheel display" »