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Flash Slave Trigger (Aaron Cake) - Flash slaves are used when you need to
supplement1-flash unit with1-or several more. This slave trigger simply triggers
those other units. It does this by "seeing" the first flash (using a phototransistor)
and triggering the other flashes a few microseconds later. The sensitivity of the
circuit is adjustable to compensate for ambient light or dimmer than usual master
flashes. (added 5/02) |
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Flashing Beacon - ..... |
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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 Flashlight (Stepan Novotill) - Pretty nice design for a cheap
consumer grade flashlight. The power switch was not exactly as shown since there was
an option to have the lamp on solid. (added 2/05) [Reverse engineered schematic
by Stepan Novotill] |
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Flashing 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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Flashing High Intensity LED 3rd Brake Light - This circuit to make a
flashing3rd brake light assembly was designed to be easy to locate all the needed
components and reasonably in expensive to build. (added 6/06) |
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Flashing Indicators - Need to flash "turn indicators" using a 555 and a
single 20 amp relay. Here is our suggestion. The timing resistor needs to be selected
for the appropriate flash-rate. |
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Flashing LED - This simple project makes a good low-cost first project to
check your soldering skills and learn to identify common components. The LED flashes
at about 3Hz (3 flashes per second).… [Designed by John Hewes] |
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Flashing LED Advertising Badge #1 - I have seen numerous flashing light
badges at trade shows and conventions. They are often handed out as gifts to promote
some business. The devices often use inefficient circuits, which cause the battery
power source to be quickly depleted. My circuit is simple but efficient enough to
provide months of continuous LED flashing. It also has a tiny push-button switch to
turn on and off the light flashing, extending battery power. …. [Hobby Corner Circuit
by Dave Johnson] |
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Flashing LED Advertising Badge #2 - This circuit is similar to flashing LED
advertising badge #1. . It uses a CD4013 dual D Flip/Flop IC. The
74HCT74 IC in #81 does not always work. As in #81, a single lithium battery will
provide months of continuous LED flashing. It also has a tiny push-button switch
to turn on and off the light flashing..... [Designed by David A. Johnson] |
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Flashing LED Power Indicator Draws Low Current - This circuit flashes a
power indicator LED to keep the average current low..... [Designed by David A.
Johnson] |
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Flashing LED with PIC12F629 - This is the first example that you should to
know how to set output pin. In this example, GPO is set as an output. LED1 will be
turn-on when GP0 is set high and LED1 wiil be turn-off when GP0 is set low. This
example use 4MHz internal clock. ….(electronic schematic added 11/08) |
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Flashing LED-based Solar Engine - Voltage-Controlled Solar Engine:This
design uses a flashing LED to determine the solar engine's voltage trip level.
(added 11/05) |
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