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Build This IoT-Based Smart Home Controller Using Blynk

Presented here is an Internet of Things (IoT)-based controller for a smart home. This IoT project can be used to control any four home...

Humidity Indicator and Controller

Presented here is a simple humidity controller and indicator. In industries such as textile, the change in moisture content has a direct impact on...

Human-Machine Interface through Electromyography

Electromyography (EMG) is a technique of recording muscular activities by measuring the potential difference across a muscle of interest. EMG signal acquisition is the...

Versatile Audio-Visual Alarm

This circuit uses a NE555 timer IC, some LEDs, a couple of piezo buzzers and a few other components to produce audio-visual effects as...

Alcohol Level Tester

Drunk driving is a big issue. This simple circuit can help prevent accidents by detecting alcohol concentrations. It's simple to use, inexpensive to manufacture,...

Make Your Own Breadboard Switch-Mode Power Supply

Some breadboard power supplies have adjustable voltage linear regulators to control the required output voltages. Efficiency of the linear regulators decrease as output power...

Make A Hi-Fi Stereo Audio Amplifier Using LA4601

Here is a simple 4W audio stereo power amplifier using a ten-pin LA4601 IC. Only a few passive components, including ceramic and electrolytic capacitors,...

Battery-Discharge Measurement Circuit

Battery-life measurement for a portable system is a time-consuming task and many methods used for it do not give reliable results. Presented here is...

Simple Interface for Digital Sound Synthesis

You can make a digital sound synthesizer, for experimentation with sound equipment or with peripheral devices, using special integrated circuits or digital-to-analogue converters (DACs)....

Low-Cost Corona Sanitising Chamber

Staying safe and disinfected these days is one of the major issues.The chances of spreading the virus through touch has high probability in daily...

Cheapest Digital Altimeter

The altimeter is one of the basic and most essential devices used in-flight systems, drones, space rockets, and submarines to measure the altitude of...

Cheapest Touchless Water Dispenser

A touchless water dispenser uses an IR sensor to detect whether or not a hand/glass is present near it. If detected, then a relay...

This Gauss Meter Is Simple To Make

Presented here is the design of a low-cost Gauss meter using a linear Hall effect sensor and a standard alkaline battery. A Gauss meter...

DIY: Make Your Own Nifty Night Lamp

This simple circuit can be used to light a small area at night. It is useful as a nifty bedroom night lamp, but it...

Museum Watchdog

Theft at a museum means more than just the loss of an object, as it affects the historical, artistic and scientific value of the...

Over-Heat Detector

NTC thermistors are often the preferred choice for temperature sensing and control in many applications, primarily because of their small package sizes and attractive...

Microcontroller Projects: Electronic Card Lock for Appliances

The circuit presented here can be used as a lock for important electronic and electrical appliances. When a card is inserted inside its mechanism,...

Arduino Based Fancy Lights Controller

Assemble yourself a portable, four-channel multi-mode light controller using an Arduino Uno board and very few external components. The fancy lights controller described here is...
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