All kinds of LED Flasher circuits
for all kinds of projects
LED Flasher Circuits
Here are some LED Flasher circuits
that you can build and use for all kinds of things.
* A fake alarm for the inside of your
car. * A flasher for the front and back of your bike. * Model
Railroading. * The uses are endless...
This first set is
for use with a 1.5V battery.
They all have a minimum of parts and
are pretty easy to build. Most of the parts can be purchased at
My Amazon Store.
Since you will be using only 1.5Vdc,
there is no danger of getting shocked.
If you're not sure where to get
1.5Vdc, just tape two 6" lengths of insulated wire with about 1/2"
striped off each end, to both the plus and minus side of a AAA, AA,
C or D size battery. (Do Not Use A 9V Transistor Battery), Be sure
to get the polarity correct. The + is the little button on the top
of the battery. (Yeah I know, most people know that but I'm just
Double check your work before
applying the voltage.
The LED in the finished circuit
should start flashing as soon as the voltage is applied.
Need any parts?
Now here we have a few LED flasher
circuits that are a little different.
This one looks like a pair of eyes
slowly brightening and then dimming over and over again. I really
like this circuit. I built several a while back and put them in
plastic Easter eggs. I drilled out holes for the eyes and put the
LED's through the holes. Then put them in bushes around the yard to
give the appearance of ghostly eyes. This is the circuit I used...
If you hard wire this circuit onto a
Board, it can be very small and fit together with a 9V battery
into a normal sized plastic Easter egg.
The circuit was
updated in 2001 by adding a few more LED's that alternate.
Try these out and maybe you can come
up with some cool ways to use them.
Now the next LED Flasher circuit I
want to show you can be used as a bicycle light.
It's a pretty simple circuit
but some of you might have to learn a little bit about 555 timers.
Bill Bowden has a short tutorial on his website about them at
Bowden's Hobby Circuits.
There is also a great Frequency and Duty Cycle Calculator available
there. If you build two, they can be used for the front and the
back of your bike. The front would use white LED's and the back
would use red LED's.