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Archives for 2015

Illuminating DRL and Turn Lights with Single Common Lamp

Last Updated on May 16, 2026 by Swagatam 54 Comments

drl2Bturn2Bwith2Bcommon2Bled

In this article I have explained a simple circuit for enabling the turn signal lamp of any car to carry out a two-way function of DRL lights as well as well the stipulated turn lights. The idea was requested by Mr. Artem. Technical Specifications Thank you for your fanaticism with electronics, this is really noticeable […]

Filed Under: Automobile Electronics Tagged With: Common, DRL, Illuminating, Lights, Single, Turn

Make this Electric Scooter/Rickshaw Circuit

Last Updated on May 16, 2026 by Swagatam 47 Comments

electric2Bscooter

In this article I have explained a simple electric scooter circuit design which can be also modified to make an electric auto-rickshaw. The idea was requested by Mr. Steve. The Circuit  Request I was lucky enough to find your blog, really amazing stuff that you’ve managed to design. I’m looking for a DC to DC […]

Filed Under: Automobile Electronics Tagged With: Electric, Rickshaw, Scooter

CDI Tester Circuit for Automobiles

Last Updated on May 16, 2026 by Swagatam 49 Comments

SparkGap

The first design below shows a simple workbench setup for testing all types CDI circuits. It uses a capacitive discharge ignition circuit along with a CDI coil to implement the testing procedure. Audio/Video Representation The circuit does not require any separate oscillator, rather the 100Hz from the bridge rectifier itself works like a pulsed trigger […]

Filed Under: Automobile Electronics Tagged With: Automobiles, CDI, Tester

5 Simple Siren Circuits you can Build at Home

Last Updated on May 16, 2026 by Swagatam 10 Comments

20150812 183122 2

In this post I have explained about a 5 simple siren circuits, using Arduino and also with ordinary components such as transistors and capacitors yet is able to produce an alarm sound at an excruciating level. The idea was contributed by “Abu-Hafss” Deeper in the article we also learn to make an advanced Arduino based […]

Filed Under: Automobile Electronics Tagged With: Build, Circuits, Home, Simple, Siren

Adding a PWM Multi-spark to Automobile Ignition Circuit

Last Updated on May 16, 2026 by Swagatam 13 Comments

pwm 3

The post investigates a simple 2 pin oscillator circuit which may be inserted between the pickup coil and the CDI unit of a vehicle for achieving an induced multi trigger input in response to each signal from the pickup coil coil, this in turn is expected to enhance the sparking ability of the CDI coil. […]

Filed Under: Automobile Electronics Tagged With: Adding, Automobile, Ignition, Multi, PWM, spark

Adjustable CDI Spark Advance/Retard Circuit

Last Updated on May 16, 2026 by Swagatam 66 Comments

advance2Bretard2Bignition2Bcircuit

In this post we’ll learn about a simple circuit which allows a manual adjust feature for the spark timing of a motorcycle’s CDI either to achieve an advance ignition, retarded ignition or simply a normal timed ignitions. After a comprehensive study regarding the subject I was apparently successful in designing this circuit which can be […]

Filed Under: Automobile Electronics Tagged With: Adjustable, Advance, CDI, Retard, spark

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