Picture of Sequential Lighting LED Disc
Using a motor, some LEDs, a battery, and a few other things, it is possible to create an amazing device that serves no purpose aside from decoration and learning. LEDs on a small disc will light sequentially as a motor spins. This is a fine alternative, if I might say, if you do not wish to go through the process of buying/building, and programming a microcontroller.

Step 1: Parts

Part list:
K'nex (can be substituted with any other structure-building thing)
Wire (Hookup, and stranded wire)
Cardboard, Plastic, or similar
Aluminum Foil (Conductive ink of some kind is a preferable substitute. I didn't have any.)
Wood or something to form a base
ahossain32 years ago
Dear sir,
I need a simple circuit with a single LED which will blink at a rate of 10 times per second.
But it will blink for three different times duration with three different interval. For example;

-------------------- (20 times blink in 2 seconds, then 2 Second gap/pause)
---------- (10 times blink in 1 second, then 1 Second gap/pause)
----- (5 times blink in 0.5 second, then 0.5 second gap/pause)
then the process is repeated continuously until disconnecting from power.
MdP1632 (author)  ahossain32 years ago
I would suggest using a microcontroller such as an Arduino for that kind of project. Without a microcontroller, I can't think of a way to implement that without a very complex circuit.
MdP1632 (author) 7 years ago
Sorry about the blurry pictures. My camera isn't very good.
arrow shot7 years ago
awesome 2 get the LED out contestants in knex section. I got a circuit kit once (awesome snap circuit set) i wasnt much of a fan with the led light..
dsman1952767 years ago
interesting. you should put knex as a key word.