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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.
In my design I use an ordinary amplified computer speaker, a diode bridge, and a
‘CRYDOM’ SSR (Solid State Relay). In order to increase the time that the lights were
on as well as protect the SSR I used a Diode Bridge to rectify the signal from the
amplifier circuit.”...(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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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....(electronic design added 6/07) |
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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) |
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Christmas Decoration Project - 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 (09/07/08) |
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Christmas Lights Tester - (Tony van Roon's circuit / schematic design added 6/06) |
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Christmas Star - (electronic circuit added 10/05) |
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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) |
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Dancing LEDs redcircuits - A LED sequencer, following the rhythm of music or
speech 9 Volt Battery-operated portable unit (added 9/04) |
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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 flashes eight LEDs in an apparently
random manner. It uses a 4026 combined counter and display driver IC which is designed
for driving 7-segment LED displays. The sequence is not really random because seven of
the LEDs would normally be the display segments, the eighth LED is driven by an output
that is normally ....(circuit added 06/07/08) |
