Tuesday, November 20, 2018

555 LED Blinker

It is possible to write a whole book on 555 Timer IC and people have done it too. Here is a very simple thing that can be done with this chip, a very simple two LED blinker.

Diagram:

Note:

From the circuit it is very simple to get the idea which parts to be used.

R1, R2 and C2 determines the speed of blinking.

Can be easily powered by a single 9V PP3 battery.

555 is a very common and versatile chip so learning about it can help hobbyist a lot.

Omitting one LED and the corresponding resistor will simply make it a single LED blinker.