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Ignition

GSM Car Ignition and Central Lock Circuit Using Arduino

Last Updated on January 26, 2026 by Swagatam 8 Comments

gsm car central lock circuit

In this post I will show how to construct a GSM based car security system using Arduino, which can lock and unlock car’s ignition system and central lock by sending a password SMS to car from your cellphone Car theft can be a heart break; it feels like your loved one got kidnapped. It hurts […]

Filed Under: Arduino Projects, Automobile Electronics Tagged With: Arduino, Central, GSM, Ignition, Lock

Simple Capacitive Discharge Ignition (CDI) Circuit

Last Updated on October 28, 2025 by Swagatam 337 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

How to Build a Pyro-ignition Circuit – Electronic Pyro Igniter system

Last Updated on September 20, 2025 by Swagatam 7 Comments

pyroignition 2

The following conversation was made by Mr.Tom and me regarding the circuit idea of a pyro-iginition system. I was asked to design the particular circuit idea by Mr.Tom in Fiverr.com. Technical Specifications The discussion explains the details of his requirement and how it was almost fulfilled by me Hi Swagatam, I was wondering if you […]

Filed Under: Temperature Controllers Tagged With: Build, Electronic, Igniter, Ignition, Pyro, System

Simple Ignition Code Lock Circuit for Automobile Protection

Last Updated on January 2, 2024 by Swagatam 15 Comments

codeswitch 1

This extremely simple code lock switch circuit can be used for locking a vehicle’s ignition by typing a hidden code over the given micro switch keypads. So now you can use this simple code lock ignition circuit for probably securing your car from a possible theft. Alternatively the circuit may be used for any application […]

Filed Under: Automobile Electronics Tagged With: Automobile, Code, Ignition, Lock, Protection, Simple

Converting Wasted Spark Ignition to Sequential Spark, for High Efficiency Combustion

Last Updated on November 8, 2021 by Swagatam 37 Comments

wasted spark 1

In this post I have explained a simple method of converting a wasted spark type ignition system in an automobile, into an enhanced, sequential spark, 6 cylinder engine type ignition system. The idea was requested by Mr. Brenton, as given below: Main Requirements I was looking through the car and motorcycle section but couldn’t find […]

Filed Under: Automobile Electronics Tagged With: Converting, High, Ignition, Sequential, spark, Wasted

Electronic 12V DC Capacitive Discharge Ignition (CDI) Circuits

Last Updated on February 16, 2021 by Swagatam 304 Comments

enhanced CDI

In the following post I have explained a simple yet enhanced 12V capacitive discharge ignition system which derives its operating voltage from the battery instead of the alternator for generating the igniting sparks. Since it works independently from the alternator voltage, without depending on a pickup coil signal, it is able to function more efficiently […]

Filed Under: Automobile Electronics Tagged With: 12V, Capacitive, DC, Discharge, Electronic, Ignition

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