Need help with circuit!

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Thread Starter


Joined Nov 3, 2007
I am trying to make a small strobe project using an LED. I need the LED to flash at a fast rate (about 10 times per second). I can also use two or more LEDs instead of just one to get the same effect if that is possible. What is the easiest way of doing this? Thanks,


Joined Dec 25, 2006
10 Hz flash rate would be ideal for a 555 timer. You may have an issue with the current sourcing/sinking capability of the 555, so an external transistor would be needed on the output. You would connect the LED's anode to Vcc, and cathode to a resistor (small value) which then connects to the collector/drain of the output transistor.

A decade counter may be another idear, or even a microcontroller if you want to get fancy.
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