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Archives for 2019

LED Obstruction Light Circuit

Last Updated on June 8, 2026 by Swagatam 15 Comments

2835 smd LED

Obstruction lights are warning lights that we see at the top of tall structures like towers and skyscrapers, installed for indicating the aircrafts and other flying objects about these obstructions. These lights alert the flying aircrafts regarding the minimum height they should maintain above these tall structures to avoid a possible collision and accidents. Obstruction […]

Filed Under: Lamps and Lights Tagged With: LED, Light, Obstruction

Rotating LED Chakra Circuit for God Idols

Last Updated on June 1, 2026 by Swagatam 18 Comments

rotating chakra using LEDs

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

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

Red LED LightStim Circuit for Removing Facial Wrinkles

Last Updated on May 24, 2026 by Swagatam 11 Comments

light color spectrum

An LED based LightStim is a device used for rejuvenating facial skin by stimulating cell growth. Normally, RED LED is used in these devices since red light have been found to be working the best for improving skin health, by eliminating facial wrinkles. Blue LED light have proved more effective against harmful bacteria responsible for […]

Filed Under: Health related Projects Tagged With: Facial, LED, LightStim, Removing, Wrinkles

Arduino 3 Phase Inverter Circuit with Code

Last Updated on May 21, 2026 by Swagatam 169 Comments

driver

An Arduino three phase inverter is a circuit which produces a 3 phase AC output through a programmed Arduino based oscillator. In this post I have explained how to make a simple microprocessor Arduino based 3 phase inverter circuit which could be upgraded as per user preference for operating a given 3 phase load. We […]

Filed Under: Grid and 3-Phase, Inverter Circuits Tagged With: Arduino, Code, Inverter, Phase

Making a Self-Powered Generator

Last Updated on May 20, 2026 by Swagatam 65 Comments

12V battery

A self-powered generator is a perpetual electrical device designed to infinitely run and produce a continuous electrical output which is usually larger in magnitude than the input supply through which it’s running. Who wouldn’t like to see a self-powered motor generator running at home and powering the desired appliances non-stop, absolutely free of cost. We […]

Filed Under: Energy from Magnets Tagged With: Generator, Making, Powered, Self

How to Troubleshoot Transistor (BJT) Circuits Correctly

Last Updated on May 20, 2026 by Swagatam 9 Comments

checking DC level of Vbe

Troubleshooting BJT circuits is basically a process of identifying the electrical faults in the network using multimeters across the various nodes in the circuit. BJT troubleshooting techniques is a huge topic and therefore including 100 % solutions and strategies can be perhaps difficult within a single article. Basically, the user should know about a handful […]

Filed Under: Electronics Theory Tagged With: BJT, Circuits, Correctly, Transistor, Troubleshoot

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