Dual LED Flasher Circuit using 555 Timer

Video Tutorial

This project is to flash/blink two LED's alternatively at an interval of around 500ms. The circuit uses 555 timer IC along with a few other electronic components and is built on a breadboard. In this circuit, 555 timer IC is used in astable mode which makes the output to continuously fluctuate between high and low until you turn the power off. Watch the video for detailed step by step instructions on how to build the circuit along with the explanation of its working.

You can also adjust the flashing rate of the LED by changing the values of capacitor or resistor used. The process to determine the component values to be used for custom flashing rate is explained later in the video.

Components required:

  1. Breadboard
  2. 555 Timer IC
  3. Capacitor: 100 µF
  4. Resistors: 270, 1k, 10k
  5. Diodes: 2 * 1N4007
  6. Power Supply: 6V
  7. Few Breadboard Connectors

Circuit Diagram:

Dual LED Flashing Circuit Using 555 timer - Schematic