555 Timer LED Flashing circuit

This circuit uses the 555 timer in an Astable operating mode which generates a continuous output via Pin 3 in the form of a square wave. This turns the LED (D1) on and off. The speed at which the LED (D1) is turned on and off is set by the values of R1 and R2.

Components Required :

1x - 555  Timer IC
1x - LED (Any color )
1x - 470K Resistor
2x - 1K Resistor
1x - 1uF Electrolytic Capacitor
1x - 9V Voltage Battery

STEPS : 

1. Place the IC on your breadBoard , remember to put it in correct way else IC will burn.

2. Now connect the pin 1 to ground.
3. Connect the pin 2 with 6 and pin 4 with 8
4. Connect 1uF cap between pin 2 and ground, place long leng of capacitor towards the pin 2 and short leg towards ground.
5. Connect a resistance of 470K from pin 2 to 7 and connect a 1K resistance from pin 7 to VCC.
6. Connect pin 8 to VCC.
7. Connect a resistance of 1K from pin 3 to the longer leg of LED , then connect the shorter leg of LED to Ground.
8. Do not connect anything to pin 5 and leave it as it is.
9. Now just connect the Battery and enjoy the show.