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Newly Updated Circuit Projects:

Simple Motorcycle Security Alarm Circuit

Last Updated on May 16, 2026 by Swagatam 4 Comments

motorcycle anti theft alarm circuit diagram using tilt switch and TTP223

In this article I have explained a simple motorcycle ant-theft security alarm circuit using a tilt switch and a TTP223 touch switch. The circuit was requested by Mr. Sergei, as given below. Design Request and Specifications I am a motorcyclist and I would like to ask you to design a simple and cheap alarm system […]

Filed Under: Automobile Electronics, Security and Alarm Tagged With: Alarm, Motorcycle, Security, Simple

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

Check What’s Behind the Paint of a Used Car

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

Laminated iron E core

Some methods to hide a used car’s external deterioration include filling up rust holes, removing collision dents with putty, fiberglass, or epoxy, and painting the car. The outside condition of an automobile is very important to potential used car purchasers due to the high cost of extensive bodywork restoration. Here is a simple circuit concept […]

Filed Under: Automobile Electronics, Sensors and Detectors Tagged With: Behind, Check, Paint, Used

Traffic Light Controller Circuit [Signal Red, Green, Amber]

Last Updated on May 16, 2026 by Swagatam 11 Comments

traffic light signal

A traffic light controller circuit can be used for controlling the sequential illumination of the RED, ORANGE and GREEN traffic signal lamps, by maintaining appropriate delays between the illumination sequence. In real traffic signal light system we all have seen how the red, orange and green lamps switch ON/OFF in sequence with specific amount of […]

Filed Under: Automobile Electronics Tagged With: Amber, Controller, Green, Light, Signal, Traffic

Infrared Car Door Lock Security Circuit

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

IR transmitter compressed

In this post I have explained how to build a simple yet foolproof infrared based remote control, which can be used for locking and unlocking any vehicle door through a personal remote handset. The remote controlled vehicle door lock is foolproof since it works only with a specific IR frequency range, and will not respond […]

Filed Under: Automobile Electronics Tagged With: Door, Infrared, Lock, Security

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