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220 Volt Flashing Lamps - This circuit is intended as a reliable
replacement to thermally-activated switches used for Christmas tree
lamp-flashing. The device formed by Q1, Q2 and related resistors triggers
the SCR. Timing is provided by R1,R2 & C1..... [Site is under construction
right now] |
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25 Light Sequencer using Xmas Lamps - This circuit above can
drive 25 small Xmas lights. The lights operate at about 200mA and 3 volts.
The supply voltage is set to 5 volts and the 4017 counter output will drop
about a volt using the 2N3053 transistors...... [Bill Bowden] |
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3 Channel-Color Organ - An old ideabut I've had numerous
requests for a good design for this.....(electronic schematic added 12/08)
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Anti-Flicker Circuit for LED Christmas Lights - I like the idea
of LED light strings that rarely need new bulbs but the flicker drives me
crazy! Here's the solution for single strings of LEDs all in series
(circuit added 08/08/08) |
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Audio Controlled Christmas Lights - Here is a simple circuit to
control 110VAC things such as Christmas Lights with low voltage audio. Be
careful, high voltage AC can kill you. “The basic Idea was to have
Christmas lights flash with the music.....(added 02/09) |
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Bells Ring Generator - Three circuit options. Can be synchronized to
Christmas tree flashing lights. (electronic circuit added 09/04)
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Canary Sound Effect (Stepan Novotill) - Reverse engineered circuit diagram
of a commercial Electronic Bird. This one was built into a plastic christmas
ornament and runs off a 9V battery. Note that L1 is actually just an audio transformer
with an unused secondary winding. (added 10/04) [Circuit by Stepan Novotill] |
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Christmas Decoration - This project flashes 18 LEDs at three different rates
and you can use these to create a Christmas decoration of your choice. The circuit is
kept simple (and cheap!) 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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Christmas 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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Christmas Star - .... |
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Christmas Star grantronics - (electronic circuit added 4/05) |
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Christmas Tree - (circuit / schematic design added 6/06) |
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Christmas Tree (or other plant) Moisture Monitor - Originally intended to
monitor the moisture in a potted plant, this moisture monitor really shines as a
Christmas tree stand water level monitor! A fresh Christmas tree drinks water an
annoying rate and bending down under the.....(electronic design added 7/08)
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Clap Relay - Clap sensitive on-off Relay. 3V Battery operated, small
portable unit, (added 6/06) |
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Color Organ Circuit - An old ideabut I've had numerous requests for a good
design for this.....(electronic circuit added 10/06) |
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Color Organ Light - This circuit works REALLY well. Notice how it will fire
even in complete silence. This provides a sort of automatic gain control.
(added 2/05) [Reverse engineered schematic by Stepan Novotill] |
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Dancing LEDs redcircuits - A LED sequencer, following the rhythm of music or
speech 9 Volt Battery-operated portable unit..... |
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Dick Had a Cameo Role in Scream 2 - Gadget Freak Case #102: Give the little
witches and warlocks a real trick when they come clamoring for treats on Halloween
with this doorbell-activated soundtrack. All that's required to build this spooky
sound generator ….(added 2/07) |
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Disco Light Controller - (diagram added 3/07) |
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Eight LEDs Random Flasher - 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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Fading Red Eyes - can be used to slowly illuminate and fade a pair of red LEDs
(added 4/02) |
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Flashing Birthday Heart - This circuit was made for my wife's birthday. It
is capable of flashing five strings of LED's with different frequencies. It also has a
connector for an 8 Ohm loudspeaker and two connectors for the small PCB's that are
contained in musical greeting cards. In this way the circuit will play alternatingly
two room filling tunes at regular time intervals. After a w..... |
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Flashing Heart (grantronics) - Here is a fun project that you can give to
that "someone special". How about Mother's Day or did you forget St Valentine's
Day?….(electronic design added 6/07) |
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Flashing neon christmas lights - This flashing set of neon Christmas lights
will make an attractive decoration for any time of year. Bl is made up of ten 9-V
transistor radio batteries in series. The battery life can be measured in
months….(electronic design added 6/07) |
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Flashy Christmas Lights - .... |
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Flicker Lamp - Having bought a cute little ‘paraffin lamp’ from a cut price
shop, I decided to make it a little more interesting. Its battery powered of course
but its continuous shine and simple on / off ‘wick control’ did not make for anything
like a close simulation of the real thing. So, I replaced the on / off control with a
variable potentiometer and I added flicker!.....(added 04/04/04) |
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Flickering Fire Effect - This simple circuit uses four low-Wattage colored
bulbs and four fluorescent lamp starters to make nice flickering flame effect. (added
4/02) |
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Flickering Fire Light - 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..... [Circuit by Stepan Novotill] |
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Flickering Lights - Halloween flickering lights (electronic circuits
added 11/06) |
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Fogger Smoke Machine - (circuit / schematic design added 6/06) |
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