fire alarm

How to make a fire alarm project – Technoreview85

It is an easy fire alarm system using IC LM358 & an IR Diode. this is a low cost fire…

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High-temperature alarm

High-temperature alarm circuit using Lm358 – Technoreview85

It is a high-temperature alarm or over-temperature alarm system electronic project. In this article, I am going to describe how…

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heartbeat sensor circuit

How to make an easy heartbeat sensor circuit ( no need code )

In this article, I am going to describe how you can make a human heartbeat monitor circuit. Usually this type…

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DIY Bluetooth earphone

How to make a wireless Bluetooth headphone at home

It is a very easy & simple project. You can convert your old wired headphone to wireless Bluetooth headphones. It…

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Object detector circuit using Ultrasonic sensor Without Arduino

Object detector circuit using Ultrasonic sensor (No need code)

It is a simple electronic project using an Ultrasonic sensor HCsr 04 with IC 555. Usually, we use HCsr 04…

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lpg gas leakage detector using arduino

LPG gas leakage detector using Arduino

It is a useful Arduino based LPG gas leakage detector & alarm system. You can make it using Arduino Nano…

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Arduino robot

How to make a robot using Arduino

In this article, I am going to describe how you can make a Robot or humanoid robot using Arduino. It…

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433mhz radio-controlled remote circuit

Simple RF Remote Control Circuit without Microcontroller ( No need code)

Using this 433mhz radio-controlled remote circuit you can make different types of projects. You can implement it as a wireless…

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Bicycle alarm lock

Bicycle Alarm lock circuit

In this article, I am going to tell you how you can make a bicycle alarm lock at home. This…

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gsm bug spy listening device

Hidden audio surveillance listening device – How to make

In this article I am going to tell you how you can make a spy bug audio surveillance listening device…

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