Pyroelectric fire alarm

To prepare Pyroelectric fire alarm we need IC CD4060 SCR/transistor diode Relays piezo element  piezo buzzer Solenoid pump  Led R...

LAPTOP PROTECTOR

        Protect your valuable laptop against theft using this miniature alarm generator. Fixed inside the laptop case, it will sound a lo...

Antisleep Alarm for Students mini project

            This circuit saves both time and electricity for students.  It helps to prevent them from dozing off while studying,  by sou...

Short Range Hand Wave Detector (Shadow Detector)

The circuit below works quite well in typical indoor room lighting. I would not recommend its use in direct sunlight. Two small PIN ...

APIS Automatic Plant Irrigation System with microcontroller AT89C2051

how to write a c code for a automatic sprinkler system? The Project (APIS Automatic Plant Irrigation System with microcontroller AT89C205...

Infra-red Level Detector

Useful for liquids level detection and proximity devices Up to 50 cm. range, optional relay operation This circuit is useful in liqu...

SENSITIVE VIBRATION DETECTOR

This vibration detector is realised using readily available, lowcost components. One of its many applications is in a rolling shutter ...

Digital visitor counter

Digital visitor counter is a reliable circuit that takes over the task of counting Number of Persons/ Visitors in the Room very Accurate...

SEISMIC SENSOR

This circuit simulates a seismic sensor to detect vibrations/sounds. It is very sensitive and ca...

SAFETY GUARD

Protect your home appliances from voltage spikes with this simple time delay circuit. To prepare this you need  IC CD4060 LED SCR ...

AUTOMATIC NIGHT LAMP AN MORNING ALARM

This circuit automatically turns on a night lamp when bedroom light is switched off. The lamp remains ‘on’ until the light sensor senses ...

SMART SENSORS

ABSTRACT A smart sensor is a component, which enhance the functions for generating correct representation of the data and performa...

Simple Light Alarm

This project provides the schematic and the parts list needed to construct a simple Light Alarm. Protect your medicine cabinet, cash drawer...

Clap Switch (update with downloadable Links)

Here’s a clap switch free from false triggering. To turn on/off any ap pliance, you just have to clap twice. The cir-cuit changes its ...

Ultra Sonic Transmitter & Receiver (switch)

      The ultrasonic transmitter uses a 555 based astable multivibrator. It oscillates at a frequency of 40-50 kHz. An ultrasonic trans...

Tacho for Microprocessor Based Drives

For a microprocessor based drive system it is certainly necessary to trace the speed of the motor continuously. The circuitry given her...

Land-line phone in-Use indicator

This circuit gives a visual indication of whether a telephone line is in use or not, helping  two or more people sharing the line to avo...

INDUSTRIAL AND DOMESTIC TIMER

As We Know is Timing is one of Vital parameter in every means. Without Proper timing success can't be achieve. So Considering The imp...

EFFECTS OF DIGITAL SMELL FOR DIFFERENT SITE(Digital smell-4)

OVER THE THEATER: - After some time the virtual theaters will came in the market. This virtual theater is basically the concept of the ...