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Grantronics Projects Christmas Tree - flashes LEDs mounted to
Christmas tree shape PCB, kit from kitsrus.com (added 4/05) |
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Halloween Flashing-Eyes Badge - Two-LEDs act as eyes following
the rhythm of music or speech. 3V Battery-operated device suitable
for pins or badges. (added 4/08) |
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Haunted House Effects - Descriptions of my home-built Halloween
haunted house special effects with pictures and spooky links: Light Beam
Sensor. (added (07/05) |
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Heart of LEDs - One of the requests we received after
publication of the Christmas Star was "can you do different shapes?" Well,
with Mother’s Day coming up soon, we thought a heart would be appropriate.
Now you can have something different to give to that special Mum or
Grandmother. or you may be able to redeem yourself if you forgot St
Valentines Day! Either way, the Heart will certainly last a.....(added
4/05) |
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Heart-shaped Badge - The badge consists of eight LEDs arranged
in the shape of a heart. One LED is lit at a time and this 'chases' round
the shape. It would be easy to adapt this project to create other shapes
with the eight LEDs.… [Designed by John Hewes] |
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How to Make Chase Lights - This example shows3 track chase
lights built from3-Christmas light sets and1-light chaser controller
(added 4/05) |
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LED Christmas lights - Schematic only, no circuit description |
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LED Flashing sweetheart kit - LED Flashing sweetheart kit..... |
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LED Mood Light - This circuit makes a nice lamp that consumes little power,
runs cool, and has an incredibly long lifetime. The lamp puts out a warm yellow shade
of light, the color may be adjusted by changing the number of red or green LED
strings. [Circuit by Forrest Cook] |
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LED or Bulb flicker shimmer randomly like candle flame or fire - This may
well be the world's only discreet logic circuit to generate truly random output. It
makes an excellent candle flicker light for your Halloween pumpkin, and looks much
more authentic than a shimmer light wherever a good a simulated flame effect is
required. I do not guarantee the accuracy or safety of any information herein.
(added 2/05) [Circuit by Stepan Novotill] |
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Les Wears His Silicon On His Sleeve UPDATED - Gadget Freak Case #73: Looking
for cool way of wowing that special someone on Valentines Day/birthday/whatever? Build
her a flashing heart made from LEDs driven by a programmable microcontroller. Les'
gadget is simple to build and made from easily-obtainable parts. The unique thing
about this design is the LEDs.....(added 2/07) |
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Line Power Flasher - Scroll down to find circuits. Great for Christmas
lights, etc. Here is an unusual flasher circuit for 120VAC loads. The circuit is
similar to the two-transistor flasher seen in several circuits in techlib.com except
that an SCR is used…..... |
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Mains Operated Christmas Star - (electronic design / schematic added 2/06)
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'Random' Flasher for 8 LEDs - This project uses a 4026 counter and display
driver IC to flash eight LEDs in an apparently random manner. It can be used to create
a display of your choice.… [Designed by John Hewes] |
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Rotating light bulb beacon - Where I live in the suburbs, there is no street
lighting, but every house has a light out front consisting of pole with a light bulb
in a plastic globe. I had the idea of turning this into a weird looking rotating
beacon as a halloween gag. Thus this lightweight construction made out of just tinfoil
and masking tape.... [Designed by Markus Wandel] |
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Sequential Flasher - Great for Christmas lights, etc.Here is a simple
circuit for sequentially flashing Christmas light strings or other similar low-power
lamps. The socket symbols may be single bulbs or sockets for lamp strings. The load
must be capable of operating from DC since..... |
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Simple scheme saves string-light situation - 12/16/04 EDN on Components
As you enter the holiday season with strings of ac-line-powered lights hanging
everywhere, do you ever wonder how bulb vendors overcame the frustrating problem of
having an entire string go dark when just one of th.… [Design Idea by Bill Schweber] |
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Simple tester checks Christmas-tree lights - 12/23/99 EDN on Components
Why is it that you always test 48 bulbs before you find the bad one in a 50-light
string?This simple circuit allows you to divide and conquer, greatly reducing the time
it takes to find the bad bulb. [Design Idea by William Dias, Brown&Sharpe, North
Kingstown, RI] |
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The LED Flashing Sweetheart Kit - When was the last time you gave a gift you
made yourself? Elementary school? Get off the consumerist fast track and quit copping
out with inferior gifts like candy and flowers. The LED Flashing Sweetheart Kit
contains a circuit board, 28 LEDs..... |
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Valentine Heart - 18 LEDs flash at three different rates and you can use
these to create an eye-catching Valentine Heart for that special person! A template
for the heart shape can be downloaded. The circuit is kept simple (and low cost) by
using the 4060B IC which is a counter and oscillator (clock) in one package. The
circuit requires a 9V supply, such as a PP3 battery..... [Designed by John Hewes] |
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Xmas Lights Tester - Like every year around the same time, I hurried to get
my Christmas tree all set up and the first thing we do when the tree is 'standing' we
like to hang the lights in the tree. Okay, better first test them before putting all
50 of them in the tree. Yep! Working beautifully. I started a carefully planned
organization of the lights so they would be evenly divided over the branches. Now the
second string of lights, tested, yep working. In the tree with them. Putting the plugs
into the receptacle and....oh no-- one series of them are on in full glory, all the
others are out. Annoyed I tried to 'fix them' by trying to push each bulb further into
their sockets. Still no go.…. [written by Jan Hamer] |
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