FLASHING LED USING 555 TIMER CIRCUIT

Updated: Sep 29, 2020

Hey there! in this post i will show you how to make flashing led using 555timer circuit.

This is a detailed instruction showing how to build a flashing L.E.D. using 555 Timer.

There is no knowledge of electronics required in order to complete this project.

All the parts needed are listed, priced and links to them are also included.

First picture shows a pin-out for the 555 Timer. This will be needed in order to connect the chip.

The second picture shows how the paths in the breadboard are connected.

here download datasheet of 555timer

Component required:

CIRCUIT DIAGRAM:

Make sure to push all the parts in to the breadboard that they make contact with it.

Place the 555 Timer chip in the middle of the breadboard, make sure to put it in the right way round other wise when you will connect the battery the chip will burn.
Using short length of jump wire connect Pin 1 (negative) to the bottom row of the breadboard (ground).
Connect Pin 8(positive) to the top row of the breadboard (VCC).
Take another length of jump wire and connect Pin 4 with Pin 8.
Identify the legs on the capacitor C1, the short one is the negative and the long one is positive. Connect the positive leg to Pin 2 and the negative leg to the ground (GND).
Now connect Pin 2 with Pin 6 using piece of jump wire.
The resistors can be connected either way round. Using the 470k Ohm (R1) resistor connect Pin 6 with Pin 7.
Take the 1k Ohm (R2) resistor and connect Pin 7 to VCC.
Connect one end of the second 1k Ohm (R3) resistor with Pin 3 (output) and any empty row on the breadboard (this resistor will be connected with L.E.D. in the next step).
Identify the legs on the L.E.D., short one is the negative(-) and the long one is positive(+). Connect the positive leg with the resistor and the negative leg to the GND.
The final step is to connect the battery clip, the red lead to the VCC and the black lead to the GND. Connect the 9v battery and enjoy the effect.

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