Components Needed

• Blinking LED
• 470Ω Resistor

The blinking LED can be found at numerous places online. Ebay has many sellers that sell them, some in the US, many in China and Hong Kong. It can be obtained for a few bucks, normally because they're sold in bulk.

The blinking LED also be called a self flash LED, so you may come across this name as well. It is a self flash LED.

The 470Ω resistor we use is just to limit current to the LED, so that it doesn't burn out.

Blinking LED Circuit

So now we show how to build the blinking LED circuit.

It is a very simple circuit composed of the blinking LED with the current-limiting resistor in series with the LED.

The circuit is shown below.