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Automobile Electronics

How to Make Car LED Chasing Tail Light, Brake Light Circuit

Last Updated on May 16, 2026 by Swagatam 83 Comments

LEDTailLight1

I am presenting a circuit design here in response to a request sent by one of the avid readers of this blog. The proposed circuit is of a sequential LED light driver, especially designed to suit the application of a multipurpose car tail light indicator. Circuit Connections The circuit is integrated to the brake switch […]

Filed Under: Automobile Electronics Tagged With: Brake, Chasing, LED, Light, Tail

Simple Capacitive Discharge Ignition (CDI) Circuit

Last Updated on May 16, 2026 by Swagatam 348 Comments

cdi

In this post I have explained the circuit for a simple, universal capacitive discharge ignition circuit or a CDI circuit using a standard ignition coil and a solid state SCR based circuit. For an audio/video explanation, you can watch the following video representation: How Ignition System in Vehicles Work The ignition process in any vehicle […]

Filed Under: Automobile Electronics Tagged With: Capacitive, CDI, Discharge, Ignition, Simple

Car Turn Signal Flasher Circuit with Lamp Malfunction Indicator

Last Updated on May 16, 2026 by Swagatam 24 Comments

carturnsignalindicatorcircuit

In this post I have explained an automotive/car turn signal indicator circuit idea with a built-in load malfunction indicator, meaning an additional LED lamp fitted on the dashboard which would warn if any of the side indicators went bad or fused. The idea was researched and requested by Mr. Abu-Hafss. The Circuit Concept I have found a transistor-based flasher including a […]

Filed Under: Automobile Electronics Tagged With: Flasher, Indicator, Lamp, Malfunction, Signal, Turn

2-Pin Motorcycle Turn Signal Flasher Indicator Circuit with Buzzer

Last Updated on May 16, 2026 by Swagatam 25 Comments

flasher

A simple construction procedure of a motorcycle electronic 2 pin turn signal indicator with beeper circuit has been thoroughly I have explained in this article. Normally, the electro-mechanical types of turn signal indicators are not reliable due to low consistency and vulnerability to changing weather conditions. The present design easily withstands the above parameters and […]

Filed Under: Automobile Electronics Tagged With: Buzzer, Flasher, Indicator, Motorcycle, Signal, Turn

Build a Homemade GSM Car Security System

Last Updated on May 16, 2026 by Swagatam 54 Comments

1 13

This super simple circuit design of a gsm car security system really works.Don’t believe it? Find out and learn the simple method of constructing it. How would you feel if you had the power of controlling your vehicle through your own cell phone, from any part of the world? Learn more how to build a […]

Filed Under: Automobile Electronics Tagged With: Build, GSM, Homemade, Security, System

3 Interesting DRL (Day Time Running Light) Circuits for Your Car

Last Updated on May 16, 2026 by Swagatam 113 Comments

DRL 2

DRL or Day Time Running Lights are a chain of bright lights mostly LEDs installed just under a vehicle’s headlight, which illuminate automatically during day time to ensure that others can distinctly notice the vehicle approaching even from a distance. The following customized DRL circuit was requested by Mr. Jivesh Technical Specification as Provided by […]

Filed Under: Automobile Electronics Tagged With: Circuits, DRL, Interesting, Light, Running, Time

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