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Newly Updated Circuit Projects:

Car Blown Brake Light Indicator Circuit to Detect Broken Bulb Filament Tail Light

Last Updated on May 16, 2026 by Swagatam 19 Comments

CARBULBFUSEINDICATOR 1

In this post I have explained a simple fused or blown car brake light indicator circuit using a single IC 555 and a few other passive components. The idea was requested by Mr. Joel Bayongasan Technical Specifications You innovations are great! Thanks for this blog. May I request something please? I was searching for a […]

Filed Under: Automobile Electronics Tagged With: Blown, Brake, Broken, Detect, Indicator, Light

Ice Warning Circuit for Automobiles

Last Updated on May 16, 2026 by Swagatam 8 Comments

car ice frost warning circuit

Devices that react to variations in atmosphere or fluid heat are simple to construct due to the easy availability of thermistors. This car ice warning circuit explains how to implement a thermistor like a transducer in a circuit that continuously blinks a warning lamp as soon as the atmospheric temperature drops to around 0 °C. […]

Filed Under: Automobile Electronics Tagged With: Automobiles, Warning

Speed Dependent Brake Light Circuit

Last Updated on May 16, 2026 by Swagatam 9 Comments

Tachometer

In this post I have explained an innovative brake light circuit using speed detection of the vehicle which could be a motorcycle. The circuit implements an advanced brake light switch ON ensuring a much safer riding experience for the user. The idea was requested by Mr. Rayan. Circuit Objectives and Requirements I have an idea, […]

Filed Under: Automobile Electronics Tagged With: Brake, Dependent, Light, Speed

Solar E Rickshaw Circuit

Last Updated on May 16, 2026 by Swagatam 15 Comments

Electric Rickshaw

In this post I have explained a simple solar electric rickshaw or E rickshaw circuit which can easily built by anybody at home and used with a locally fabricated vehicle. The idea was requested by Mr. Amit. The Design Selecting a BLDC In one of my earlier posts I presented an idea which could be […]

Filed Under: Automobile Electronics, Solar Controller Circuits Tagged With: Rickshaw, Solar

10 LED Tachometer Circuit Diagram

Last Updated on May 16, 2026 by Swagatam 102 Comments

102BLED2Btacho

In this post I have explained how an accurate 10 LED tachometer circuit can be built using ordinary parts like IC 555 and IC LM3915. The idea was requested by Mr. Munsif. What is a Tachometer A tachometer is a device which is used for measuring vehicle engine RPM. Thus, it is basically used for […]

Filed Under: Automobile Electronics Tagged With: LED, Tachometer

Bluetooth Car Ignition Lock Circuit – Keyless Car Protection

Last Updated on May 16, 2026 by Swagatam 25 Comments

mainsremote

This circuit will allow the user to lock his car ignition using his phone Bluetooth, meaning the ignition can be locked/unlocked only through a specific code from the user’s cellphone Bluetooth. Overview In one of my earlier posts I have already explained how to hack a Bluetooth headset and use it for any desired switching […]

Filed Under: Automobile Electronics, Remote Control Circuits Tagged With: Bluetooth, Ignition, Keyless, Lock, Protection

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