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Newly Updated Circuit Projects:

Automotive Display LED-backlight Driver Circuit using LP8864-Q1

Last Updated on May 16, 2026 by Swagatam Leave a Comment

The LP8864-Q1 is this cool automotive high-efficiency LED driver that comes with a boost controller. Basically it is made to efficiently power the LEDs in your car. It has got these four high-precision current sinks that do something called phase shifting. What is neat is that this phase shifting automatically adjusts based on how many […]

Filed Under: Automobile Electronics Tagged With: Automotive, backlight, Display, Driver, LED, LP8864

Police/Ambulance Siren Circuit with Rotating Beacon Light

Last Updated on May 16, 2026 by Swagatam 5 Comments

Police Siren

In this post I have explained how to construct a police, ambulance or a fire truck siren circuit using evergreen IC 555 timer and we will also learn how to build a revolving beacon light without any mechanical parts. The proposed project is divided into two parts the siren circuit and the rotating beacon light, […]

Filed Under: Automobile Electronics Tagged With: Ambulance, Beacon, Light, Police, Rotating, Siren

Windshield Washer Fluid Indicator Circuit

Last Updated on May 16, 2026 by Swagatam 1 Comment

windshield washer fluid indicator circuit

In this article I have explained a permanent indicator of the windshield washer fluid level. Knowing that electronics do not mix well with liquids, instead of using a float gauge system, we have devised a completely different operating principle for you. The operation of our circuit is based on timing the duration of the motor’s […]

Filed Under: Automobile Electronics Tagged With: Fluid, Indicator, Washer, Windshield

Self Adjusting Automobile Headlamp Circuit

Last Updated on May 16, 2026 by Swagatam 6 Comments

auto adjusting vehicle headlamp dipper circuit compressed

A suddenly dimming and brightening automobile headlamp is usually quite undesirable, since it causes a painful interference with the normal vision of the opposite side driver or the passengers. In this post we try to design a gradually self-adjusting automobile headlamp brightness circuit, which enables the brightness of the vehicle headlamp to vary proportionately in […]

Filed Under: Automobile Electronics Tagged With: Adjusting, Automobile, Headlamp, Self

Automotive Sensor Monitor Circuit Diagram

Last Updated on May 16, 2026 by Swagatam 2 Comments

This fascinating Automotive Sensor Monitor Circuit was created and shared with me for publication by a devoted reader of this blog and passionate electronics enthusiast, Mr. August Peterson. I sincerely appreciate Mr. August’s valuable and generous contribution to this site. Overview Automotive diagnostic code readers are invaluable in displaying what the vehicle electronic control unit […]

Filed Under: Automobile Electronics Tagged With: Automotive, Monitor, Sensor

Automotive Sensor Substitute Circuit Diagram

Last Updated on May 16, 2026 by Swagatam Leave a Comment

This innovative Automotive Sensor Substitute Circuit explained in this article was thoughtfully designed and contributed by one of our passionate readers, Mr. August Peterson, who is an avid electronics enthusiast. It is a great pleasure to feature his creative work on this platform and I extend my heartfelt gratitude for his generous effort in sharing […]

Filed Under: Automobile Electronics Tagged With: Automotive, Sensor, Substitute

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