LED Flasher Using Timer IC 555

LED Flasher

LED Flasher using a 555 timer ic

In this article i have explained the circuit design for blinking LED using a timer IC 555. This circuit designed explain the working and use of Timer IC 555. This IC uses many applications, generally used in Lamp Dimmer,Timer Switch, Wiper Speed control, PWM Modulation, Variable duty cycle fixed frequency oscillator etc.This circuit is designed using a low power consumption output device. 

Blinking LED Circuit Using 555 Timer IC


Circuit Diagram

LED Flashing using a 555 timer ic

Practical video

The following circuit design explains the design of the blinking LED with the 555 timer IC. Here is the pic configuration of timer ic 555.

Blinking LEDs using a 555 timer IC  (2 LEDs)

This project control two leds that blinks one after one. We can build this circuit with simple change in the circuit given above. Only difference is that above circuit blinks only 1 LED but this circuit controls two LEDs. Blinking speed can be increase and decrease with the in resistance or change in capacitor.


  • 555 timer IC
  • LED any color (2 LEDs)
  • 6 to 9v battery
  • 1KΩ Resistor – 2
  • 470KΩ Resistor
  • 1µF capacitor (16v or more)
  • PCB or without PCB
  • some wires

Circuit DiagramLED Blinking using Timer ic

Practical Videos



LED blinking using 8 LEDs

This simple LED Flasher Using Timer IC 555 is used to blink 24 LEDs with Two pairs. Both pairs of LEDs blink one and after. Circuit diagram is given below. You can alter this circuit by increasing and decreasing LED.  
8 led blinker with timer ic 555

Simple 8 LEDs flashing circuit using timer ic 555

In this simple LED Flasher Using Timer IC 555 we have used 8 LEDs with using timer ic. This is also very simple circuit and also can be changed by increasing and decreasing the value of LEDs. If you want control the speed of leds then you should use variable resistor. Blinking speed can also be control with the change in capacitor. 
flop flop with timer ic 555

Practical Video

Above LED Flasher Using Timer IC 555 circuit are based on timer ic. If you have nay question about these circuits you can ask question freely.

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