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rotating chakra using LEDs

Rotating LED Chakra Circuit for God Idols

Last Updated on September 5, 2019 by Swagatam 18 Comments

LED Chakra is an ornamental lighting system which depicts or imitates a rotating wheel like appearance, by means of sequentially shifting Illuminated LED arrays.

Table of Contents
  • Video Demo
  • Working Theory
  • Circuit Description

warning message: electricity is dangerous, proceed with caution
ornamental LED wheek chakra

Indian subcontinent is a land of festivals and celebrations which mostly start from the month of August and continues until the New Year. All these festivals have one fundamental thing in common, and that is dazzling colorful lights, flashing and running with all sorts of patterns and sequences. Most of these lights are in the form of LED lights since LEDs are the most efficient in terms of brightness and cost.

In this article I will elucidate one such interesting LED ornamental project, which will imitate a rotating illuminated chakra light. These can be commonly seen behind the crown of popular God idols like lord Ganesha, Sai baba, and around the finger of Lord Vishnu.

LED wheel chakra for God idol decoration

Video Demo

Working Theory

The working principle of this LED chakra circuit is based on the popular IC 4017 and IC 555 chaser circuit. The only difference being in the output driver stages, which has been upgraded with a delay OFF timer stage for introducing an eye catching slow fade effect.

The slow fade effect induces the required persistence of vision effect which we normally experience in real life rotating equipment such as fans, motor, vehicle wheels etc.

This allows the LED chakra to acquire a real shiny rotating metal kind of effect when it's placed behind the crwon of God idols.

Circuit Description

As mentioned above the design works with the IC 4017 which is Johnson's 10 stage decade counter divider IC, and a basic astable multivibrator IC 555.

The IC 555 oscillates at around 50 to 100 Hz rate (adjustable) and supplies the required clock pulses to the pin#14 of the IC 4017.

The IC 4017 converts the clocks into a momentarily ON shifting high logics across its output pins.

These moving logic levels are fed to the array delay OFF transistor stages which hold the sequential triggers for some moment instead of switching off immediately.

This enable the respective transistor stages to keep the LEDs ON for some time and provide the required rotational chakra like effect with a time lag.

Parts List

All resistors are 1/4 watt 5%

  • 10K - 10
  • 22K - 10
  • 33K - 1
  • 100K or 330k pot - 1

Capacitor

  • 0.01uF - 1
  • 0.1uF - 1
  • 1uF/25V - 1
  • 33uF/25V - 10

Semiconductors

  • 1N4148 - 10
  • BC547 - 10
  • LEDs - 40
  • IC 4017 - 1
  • IC 555 - 1

If you have questions regarding the construction of this LED wheel chakra project, you may feel free to ask through the comments below.

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Filed Under: Lamps and Lights Tagged With: Chakra, Idols, LED, Rotating

About Swagatam

I am an electronics engineer and doing practical hands-on work from more than 15 years now. Building real circuits, testing them and also making PCB layouts by myself. I really love doing all these things like inventing something new, designing electronics and also helping other people like hobby guys who want to make their own cool circuits at home.

And that is the main reason why I started this website homemade-circuits.com, to share different types of circuit ideas..

If you are having any kind of doubt or question related to circuits then just write down your question in the comment box below, I am like always checking, so I guarantee I will reply you for sure!

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