• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Hire Me | Contact | Calculators-online
You are here: Home / Archives for Automobile Electronics

Automobile Electronics

Adjustable CDI Spark Advance/Retard Circuit

Last Updated on July 1, 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

How to Make HHO Fuel Cell Circuit in Automobiles for better Fuel Efficiency

Last Updated on June 30, 2026 by Swagatam 176 Comments

HHO2Bgas2Bin2Bmotorcycle

In this post we’ll try to investigate the making of HHO gas in automobiles for enhancing their mileage by approximately 50% or more, that means a reduction of petrol or diesel consumption by the same amount. In the previous post I tried to put forth an innovative design of a high voltage low current generator […]

Filed Under: Automobile Electronics, Energy from Magnets and Earth Tagged With: Automobiles, better, Cell, Efficiency, Fuel, HHO

GSM Car Ignition and Central Lock Circuit Using Arduino

Last Updated on June 9, 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

Accurate Speedometer Circuit

Last Updated on June 8, 2026 by Swagatam 30 Comments

Speedometer

Here we’ll see how a simple yet accurate analogue speedometer circuit can be constructed at home using just a single IC and a few external passive components. The speedometer can be universally used with all 2-wheeler, 3-wheeler, even in bicycles for indicating their speeds. Using Frequency to Voltage Converter In my previous article I have […]

Filed Under: Automobile Electronics, Meters and Testers Tagged With: Accurate, Speedometer

Automatic Vehicle Headlight Dipper/Dimmer Circuit

Last Updated on June 3, 2026 by Swagatam 56 Comments

AutomaticAutomobileLightDipperCircuitDiagram252CImage

The circuit described here can be built and used in your vehicle for an automatic dipping and dimming operation of the vehicle headlamps, in response to the intense lights coming from an opposite vehicle headlamps. What’s a Dimmer/Dipper in Automobiles An automobile headlight dimmer/dipper is a circuit which automatically switches the headlight intensities of vehicles arriving from […]

Filed Under: Automobile Electronics Tagged With: Automatic, Dimmer, Dipper, Headlight, Vehicle

How to Connect Car LED Downlight: Circuit Diagram

Last Updated on June 2, 2026 by Swagatam Leave a Comment

A car LED downlight available in the market can be easily integrated to an existing car battery if its rating is identical to the battery’s voltage rating. I have explained more regarding one such request sent by Mr. Allwyn Siqueira. How to Connect Downlight to 12V Car Battery Hi Swagatam, I’ve just spent the last […]

Filed Under: Automobile Electronics, Lamps and Lights Tagged With: Connect, Downlight, LED

  • Page 1
  • Page 2
  • Page 3
  • Interim pages omitted …
  • Page 18
  • Go to Next Page »

Primary Sidebar



My Youtube Channel

Circuit Simulator

circuit simulator image



Subscribe to get New Circuits in your Email



Categories

  • Arduino Projects (95)
  • Audio and Amplifier Projects (134)
  • Automation Projects (18)
  • Automobile Electronics (103)
  • Battery Charger Circuits (88)
  • Datasheets and Components (109)
  • Electronics Theory (149)
  • Energy from Magnets and Earth (40)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (20)
  • Health related Projects (27)
  • Home Electrical Circuits (13)
  • Indicator Circuits (16)
  • Inverter Circuits (99)
  • Lamps and Lights (162)
  • Meters and Testers (72)
  • Mini Projects (28)
  • Motor Controller (68)
  • Oscillator Circuits (28)
  • Pets and Pests (15)
  • Power Supply Circuits (91)
  • Remote Control Circuits (50)
  • Security and Alarm (65)
  • Sensors and Detectors (107)
  • SMPS and Converters (45)
  • Solar Controller Circuits (60)
  • Temperature Controllers (43)
  • Timer and Delay Relay (50)
  • Voltage Control and Protection (44)
  • Water Controller (37)
  • Wireless Circuits (31)



Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap

People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |



Recent Comments

  • Swagatam on 10 Best Timer Circuit Diagrams using IC 555
  • Swagatam on Simple FM Radio Circuit Using a Single Transistor
  • Čebelica on Simple FM Radio Circuit Using a Single Transistor
  • Ken on 8X Overunity from Joule Thief – Proven Design
  • Ricardo González on 10 Best Timer Circuit Diagrams using IC 555

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Stack Exchange
  • Linkedin

© 2026 · Swagatam Innovations