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PROJECTKITS manufacture EFY project titles with EFY Specifications or better. These are fully assembled and tested projects. The projects come with abstract, description, video, sample code, flow chart, datasheets etc for Documentation. Please confirm the cost before ordering. Shipping charges are extra. Follow the web Link to Request Abstract: http://www.liveprojects.page4.me/38.html

 Caution: (please note our competitors provide projects without soldering and testing. mostly after soldering projects fail and you have to send them for repair to their factory in this process you spend more money and 15 days time is lost, they provide kit without power supply transformer, mains wire , plug and you have to buy soldering iron, lead and flux etc also)

Cost

PRJ-ID

Access Control Project Title

Cost

E0001

Secure Digital Access System Using iButton:

3500

E0002

Secured Room Access System:

2700

E0003

Micro controller based Code Lock:

2350

E0004

8 digit Code Lock for Appliance Switching:

3200

E0005

GSM Microcontroller Based Electronic Lock:

3500

E0006

Electronic Bi Cycle Lock:

1000

PRJ-ID

Biomedical Project Title

Cost

E0007

Biomedical Monitoring System With GSM:

8000

E0008

Temperature Indicator using PIC16F877A:

2500

E0009

DS1620 Based Temp. Controller:

3000

E0010

DS1820 High Precision Temprature Indicator:

4000

PRJ-ID

Biometric-Fingerprint Project Title

Cost

E0011

Electronic Voting Machine with Finger Print Module:

10000

E0012

Finger Print Based Security System:

10000

PRJ-ID

Wireless Communication Project Title

Cost

E0013

Secured Wireless Data Communication:

6000

E0014

PC to PC Wireless Communication through RF Link:

6000

E0015

PC To PC Optical Fiber Communication:

5000

E0016

PC -MC Communication:

3000

PRJ-ID

GSM Project Title

Cost

E0017

GSM Controlled Wireless Robot:

6000

E0018

SMS based Anti Theft System for Vehicles:

6000

E0019

SMS based DC Motor Control:

6000

E0020

SMS based Energy Meter Monitoring

6000

E0021

SMS based Generator Start/Stop System

6000

E0022

SMS based Home Appliances Control

6000

E0023

SMS based Notice Board for Collages/Institutes         

6000

E0024

SMS based Railways Reservation System

6000

E0025

SMS based Vehicle Location Finder for Parking

6000

E0026

SMS Controlled Vehicle Ignition System for Safety

6000

PRJ-ID

RFID Project Title

Cost

E0027

RFID based Banking System

7000

E0028

RFID based Voting Machine

7000

E0029

RFID Railway Platform to Display Position of Coach: 

5500

E0030

RFID based ATM Machine

7000

E0031

RFID Based Attendance System

7000

E0032

RFID Based Automatic Car Parking System

7000

E0033

RFID based Automatic Challan

5500

E0034

RFID based Blind man Stick

9000

E0035

RFID based Event Tracking System for Sports:

7000

E0036

RFID based Library Management System

7000

E0037

RFID based Local Vehicle Tracking System

7000

E0038

RFID based Metro Train Prototype

7000

E0039

RFID based Railway Reservation

7000

E0040

RFID-based Security System:

E0041

RFID based Shopping Cart

7000

E0042

RFID based Telemedicine System

7000

E0043

RFID Based Toll-tax System

7000

E0044

RFID Electronic Road Pricing for Controlling the Traffic:

7000

E0045

RFID Prepaid Energy Meter with Recharge Option

7000

E0046

RFID Based Security System

7000

E0047

Home Security System With RFID Reader or Smart Card

6000

E0048

SMS based Anti Theft System for Vehicles

6000

PRJ-ID

ROBOTICS Project Title

Cost

E0048

Cellphone Operated Land Rover

5000

E0049

Remote Controlled Land Rover Robotics

4500

E0050

Agriculture Robot

8000

E0051

Conveyor belt attachment

16000

E0052

Edge Avoiding Robot

8000

E0053

Hexapod

8000

E0054

MATLAB based automatic room light control

10000

E0055

MATLAB based Surveillance Robot

5500

E0056

Obstacle Avoiding Robot

3500

E0057

PC Based Robot with GUI in Lab view/MATLAB

10000

E0058

PC Based Robot with out GUI

8000

E0059

Pipe Climbing Robot

4500

E0060

Remote-Controlled Land Rover - A DIY Robotics Project

3000

E0061

Robotic Fork Lift.

4500

E0062

Robot arm kit

4000

E0063

Wall Following Robot

3500

E0064

Fire Fighting Robot With GSM

10,000

E0065

Vacuum Cleaning Robot

8000

E0066

Fire Fighting Robot

8000

E0067

Wall Following Robot

8000

E0068

Obstacle Avoiding Robot

3500

E0069

Line Following Robot

3500

E0070

Remote-Controlled Land Rover - A DIY Robotics Project

3000

E0071

AT89C52 based RoboCar

2250

E0072

SMS Controlled Wireless Robot

8000

E0073

Obstacle Avoiding Robot

8000

PRJ-ID

SOLAR Project Title

Cost

E0074

Sensor Based Solar Tracking System

5000

E0075

Time Operated Solar Tracking System          

6000

E0076

Solar Lighting System with mini solar panel

5000

PRJ-ID

LED Project Title

Cost

E0077

LED CUBE 5X5X5 with low resolution graphics display and 3D advertising display:

6000

E0078

Microcontroller Based Moving Message Display         

6000

PRJ-ID

Safety Project Title

Cost

E0079

Speed Checker For Highways

5000

PRJ-ID

Mislanious Project Title

Cost

E0080

Multi Story Car Parking with Password Protection for VIP Parking

8000

E0081

Microcontroller Based Digital Clock with Alarm          

5000

E0082

Home Security System With Password

5000

E0083

Electronics Components Tester

5000

E0084

Automatic College Bell

5000

E0085

Micro controller based Speedometer cum Odometer

3000

E0086

Two Channel PC Based Oscilloscope

5000

E0087

Remote Controlled 6 Camera CCTV Switcher:

5000

PRJ-ID

Electrical Project Title

Cost

E0088

Infrared Remote Control Switch (6 devices + 1 fan)

6000

E0089

Temperature Controlled Fan

4000

E0090

RTC Based Time Operated Electrical Appliances

4000

E0091

RF Based Remote Control               

4000

E0092

Automatic Room light       

4000

E0093

Computerised Electrical Equipment Control

2500

E0094

Remote Control for Home Appliances

2500

E062

Password Based Door Locking

Security is prime most concern in every house hold. In this project we use 8-bit Microcontroller to control the solenoid lock to provide access to authorized persons to a home, building by entering password from a keypad residing out side the home,building.

E061

Multipattern Running Lights

This Project Multi-Pattern Running light is used to generate several designs of Running Lights. We use ten LEDs for display. The designs can be selected by using two switches UP and DOWN. The 8 bit Microcontroller is used to control all the operations. It control the LEDs though the Ports. The above system is monitored and controlled by the 8 bit microcontroller AT89C2051. The Microcontroller continuously monitors the Switches and switch on/off the LEDs according to the Program. The Power for the circuit is derived from the Step down transformer and the 5V regulator IC7805. The regulator IC produces a constant 5v output.

E070

Adaptive Lighting System for Automobiles

Adaptive Lighting System for Automobiles is very useful for Safety of the vehicle owners. It automatically switch the head light to lower beam when there is a vehicle coming from front at night. Once the vehicle is passed it will automatically switch the head light to higher beam. We can save the valuable human lives by using this system in the vehicles due to road accidents at night due to high flash lights.

E075

Microcontroller Based Bi Directional Visitor Counter

Visitor counting is simply a measurement of the visitor traffic entering and exiting offices, malls, sports venues, etc. Counting the visitors helps to maximize the efficiency and effectiveness of employees, floor area and sales potential of an organization. Visitor counting is not limited to the entry/exit point of a company but has a wide range of applications that provide information to management on the volume and flow of people throughout a location. The Microcontroller based Bi-directional Visitor Counter implemented here is a low-cost solution that can be used to count the number of persons entering a location. The Visitor Counter uses two IR transmitter-receiver pairs installed at the passage area: one pair comprising IR transmitter IR TX1 and receiver phototransistor T1 is installed at the entry point of the passage, while the other pair comprising IR transmitter IR TX2 and phototransistor T2 is installed at the exit of the passage. For the system to work, the signals from the IR LEDs should continuously fall on the respective phototransistors, i.e. proper orientation of the transmitters and phototransistors is necessary.

E074

Cellphone Based Device Control with Voice Acknowledgement

Here is a circuit that lets you operate your home appliances like lights and water pump from your office or any other remote place. So if you forgot to switch off the lights or other appliances while going out, it helps you to turn off the appliance with your cellphone. Your cellphone works as the remote control for your home appliances. You can control the desired appliance by pressing the corresponding key. The system also gives you voice acknowledgement of the appliance status.

E080

Count Down Timer with digital LCD display on conveyor belt for industrial application:

Atmel AT89C2051 Based Count Down Timer that performs countdown operation for up to 99 minutes with two 7-segment displays showing the actual time left. During the activity period, a relay is latched and a flashing LED indicates countdown timing’s progress.

E081

Micro controller Based Tachometer  with LCD display

A tachometer is nothing but a simple electronic digital transducer. Normally, it is used for measuring the speed of a rotating shaft. The number of revolutions per minute (rpm) is a valuable information for understanding any rotational system. For example, there is an optimum speed for drilling a particular-size hole in a particular metal piece; there is an ideal sanding disk speed that depends on the material being finished. You may also want to measure the speed of fans you use. The Micro-controller based Tachometer implemented here is a photoelectric tachometer that can measure the rpm of most shop-floor tools and many household machines without any mechanical or electrical interface.

E083

Gas Leakage Detection with voice based message and Alarm

The circuit detects the leakage of LPG gas and alerts the user through audio visual indications.

E082

ATMEGA32 Development Board with on board programmer for beginners with sample code tutorial

Here we describe a development board that is based on the popular AVR ATmega32 microcontroller and meets the needs of both the beginners as well as professionals. Beginners may use the board to learn the basics of microcontrollers, while professionals may use it for developing microcontroller-based complex and smart circuit designs. twelve sample codes given in this project will also help one to learn more about the inbuilt peripherals of the microcontrollers.

E086

Microcotroller based Industrial Timer with remote control programmable time on /off

The Microcontroller based Industrial Timer is a simple timer based on the AT89S52 microcontroller that performs countdown operation starting from the digit 9999 (minutes/seconds) with four 7-segment displays showing the time left. The relay energises when the the start switch is pressed and remains ON till the countdown reaches 0000.Four push-to-on switches are used to start/stop,select either minutes or seconds,and set the initial value for countdown operation (using up and down keys).

E087

School College Quiz Buzzer with time lapse display to identify exact time difference

Manual buzzers used for quiz competitions in schools and colleges create a lot of confusion in identifying the first respondent. Although there are circuits using PCs and discrete ICs, they are either too expensive or limited to only a few number of players. The School/College Buzzer is a circuit that can be used for up to eight players.

E094

Micro controller Based Ultrasonic Distance Meter for contact less liquid and obstruction detection:

There are several non-contact ways available for distance measurement. Of these, one way is to use ultrasonic waves at a frequency of 40 KHz. Ultrasonic transducers measure the amount of time taken for a pulse of sound to travel to a particular surface and return as a reflected echo. The Micro-controller based Ultrasonic Distance Meter implemented here is capable of calculating distances of up to 1 meter. This distance measurement for an object/obstruction is based upon the speed of sound at an ambient temperature of 25°C. The distance hence measured is displayed on LCD display for the user to read out.

E097

Microcontroller Based Bi Directional Visitor Counter with metal detector for security applications:

Visitor counting is simply a measurement of the visitor traffic entering and exiting offices, malls, sports venues, etc. Counting the visitors helps to maximize the efficiency and effectiveness of employees, floor area and sales potential of an organization. Visitor counting is not limited to the entry/exit point of a company but has a wide range of applications that provide information to management on the volume and flow of people throughout a location. The Microcontroller based Bi-directional Visitor Counter implemented here is a low-cost solution that can be used to count the number of persons entering a location. The Visitor Counter uses two IR transmitter-receiver pairs installed at the passage area: one pair comprising IR transmitter IR TX1 and receiver phototransistor T1 is installed at the entry point of the passage, while the other pair comprising IR transmitter IR TX2 and phototransistor T2 is installed at the exit of the passage. For the system to work, the signals from the IR LEDs should continuously fall on the respective phototransistors, i.e. proper orientation of the transmitters and phototransistors is necessary.

E098

Laptop Secutity Station: If someone tried to lift your laptop from the docking station, Then it will give you an alarm by audio and visual means to indicate that some one has stolen your laptop.

E099

Multi Switch Doorbell with Indicators

In a house with multiple doors, it becomes difficult to hear just a doorbell and ascertain as to which door a visitor is standing at. The Multi-Switch Doorbell circuit uses a monitoring panel with indicators to solve this problem by indicating the door number where the visitor has pressed the doorbell. In addition to this mechanism, a buzzer is also activated each time one of the four doorbell switches (one for each door) is pressed.

E100

Fastest Finger First Indicator with exact time difference indication:

The Fastest Finger First Indicator is highly useful in quiz and game shows for indicating which player reacted or answered the fastest. The number assigned to the player is displayed by the circuit along with an alarm sound while the fastest finger buttons of the other contestant are locked.

E059

Microcontroller Based Digital Code Lock

Security is prime most concern in every house hold. In this project we use 8-bit Microcontroller to control the solenoid lock to provide access to authorized persons to a home/building by entering password from a keypad residing out side the home/building.

E058

Infrared Interruption Counter for conveyor based industrial applications:

Infrared interruption counter is a reliable circuit that takes over the task of counting number of interruptions very accurately. When somebody enters into the room, then the Counter is Incremented by one. The total number of Persons inside the Room is displayed on the seven segment displays.The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM.All the above systems are controlled by the Microcontroller.

E055

Digital Calendar

his Project Digital Calendar using Microcontroller is an advanced digital calendar, which displays the Date, Day, Month over the LED display. It has an 8 bit Microcontroller which runs on the Program embedded on its ROM. Separate LEDs are provided for the date, day, and month. The system has an battery backup so that it can run over all the time even during the power failure. Totally there are 31 LEDs for indicating the date and 12 LEDs for indicating the Month and 7 LEDs to indicate the day. All the above systems are controlled by the Microcontroller. In our project we are using the popular 8 bit microcontroller AT89C2051. It is a 20 pin microcontroller.

E069

Microcotroller based Industrial Timer

The Microcontroller based Industrial Timer is a simple timer based on the AT89S52 microcontroller that performs countdown operation starting from the digit 9999 (minutes/seconds) with four 7-segment displays showing the time left. The relay energises when the the start switch is pressed and remains ON till the countdown reaches 0000.Four push-to-on switches are used to start/stop,select either minutes or seconds,and set the initial value for countdown operation (using up and down keys).

E089

Cellphone Based Device Control with Voice Acknowledgement

E101

Long Range FM Transmitter with PC interface

The Long-Range FM Transmitter has an additional RF power amplifier stage after the oscillator stage, to raise the power output to 200-250milliwatts. This transmitter can provide good signal strength for up to a distance of 2 Kilometers, when coupled with a good matching 50-ohm ground plane antenna or multi-element Yagi antenna.

E104

Digital Security System

A reliable security system is a necessity in todays day and age in order to protect one’s home from burglars and intruders. The Simple Digital Security System can be used as a watch-dog by installing simple sensing loops around one’s building. The system is based upon an enameled copper wire loop circuit. The circuit also consists of a seven-segment display that indicates the room no. where the intrusion has taken place, these numbers being assigned by the user through the circuitry. At the time of an intrusion, the loop breaks and the buzzer generates an alarm while the seven-segment display shows the room number been intruded. The Simple Digital Security System explained here can check intrusions for a maximum of three rooms. There are three loops in the circuitry namely loop1, loop2 and loop4. Hence, for example, if loop1 (corresponding to room1) is broken, the display shows a 1. Similarly, if loop2 or loop4 is broken, the numbers 2 and 4 are displayed respectively. However, if two or more loops are broken simultaneously then the sum of the loop numbers are displayed on the seven segment display. It is for this reason that the loops are NOT labeled as 1, 2 and 3. Because, in such a case a 3 being displayed by the seven-segment could be construed as simultaneous intrusions in room1 and room2 or an intrusion in room3, thereby leading to confusion and chaos.

E106

Numeric Water Level Indicator with Display

Most water level indicators are equipped to indicate and detect only a single level. The Numeric Water Level Indicator implemented here can indicate up to nine such levels and displays the level no. on a seven segment display. Hence, not only is the circuit capable of cautioning a person that the water tank has been filled up to a particular level, it can also indicate that the water level has fallen below the minimum level. This is particularly important in appliances such as the desert cooler where there is a danger of motor-burnout when the water is used up. This circuit exploits the simple fact that water is a good conductor of electricity. The placement of nine probes (having connections to the circuit) at different heights inside the water tank determines the nine different detectable levels. When the water reaches a particular height in the tank; the seven segment display shows the corresponding level no., digit 9 representing the “tank full” condition and digit 0 representing the “tank empty” condition.

E121

Microcontroller based precision Lead Acid Battery Charger cum Voltage Analyser. Provision for full charge half charge and trickle charge.

E122

Burglar Alarm

The burglar alarm implemented here is a simple circuit that automatically sounds an alarm whenever an intrusion is detected. The system is implemented by installing a simple sensing loop, which is basically a thin copper wire. This way, the loop is both invisible and brittle enough to break easily and initiate the alarm mechanism. At the time of an intrusion, the loop breaks and this causes the loudspeaker to generate a continuous and loud alarm sound. Once the loop is broken, the alarm can only be silenced by either turning OFF the power supply or by replacing the broken wire by a new continuous loop. Number of ICs used: None

E125

Long Range Burglar Alarm using Laser Torch             

Most laser torch based burglar alarms work in darkness only. But this Long Range Burglar Alarm can work reliably in daytime as well to alert you about intruders and burglars. The Burglar Alarm comprises of laser transmitter and receiver units, to be mounted on the opposite pillars of the possible entry points. Whenever anyone enters to interrupt the transmitted laser beam falling on the receiver, the buzzer in the receiver circuit sounds an alarm. No. of ICs used: 1 Note-Laser torch will not be provided by us.

E124

IR Remote Control Timer

The IR Remote Control Time circuit uses IR transmission for remotely controlling the ON/OFF operation of up to two electrical appliances. The duration for which each appliance is turned ON can be controlled and this time period can vary from 0.11 to 110 seconds for given set of components. The operating range of the remote control is about 3 meters.

E129

Multi Switch Doorbell with Indicators

In a house with multiple doors, it becomes difficult to hear just a doorbell and ascertain as to which door a visitor is standing at. The Multi-Switch Doorbell circuit uses a monitoring panel with indicators to solve this problem by indicating the door number where the visitor has pressed the doorbell. In addition to this mechanism, a buzzer is also activated each time one of the four doorbell switches (one for each door) is pressed.

E128

Electronic Watch Dog

The Electronic Watch Dog produces an alarm sound when a person crosses the gate. The circuit comprises of a transmitter unit and a receiver unit, which are mounted face to face on opposite pillars/walls of the gate such that the IR beam gets interrupted when someone is standing at the gate or passing through it. When such a condition is detected, an alarm sound is generated for audible indication.

E136

Luggage Security System

While traveling by a train or bus, we generally lock our luggage using a chain-and-lock arrangement. But, still we are under tension, apprehending that somebody may cut the chain and steal our luggage. The Luggage Security System is a simple circuit that generates an alarm when someone tries to cut the luggage chain

E134

Low cost Transistorised Intercom   

The Low Cost Transistorised Intercom allows the voice at one end to be amplified and listened to at the other end through a loudspeaker as a one-way intercom. A two-way intercom can be similarly assembled using two such kits. No. of ICs used: None

E133

Low Cost Hearing Aid

The low cost and light weight circuit can be used as a device for person with hearing problems. The hearing aid circuit offers the advantage of high sensitivity and low current consumption.

E132

Electronic Auto Dipper and horn implementation for highway safety

The Electronic Auto Dipper implements an automatic dipper action. This solves the problem of high glare face at night while driving when the high beam headlight lamp of a vehicle approaching from the opposite direction causes glare for both the drivers. A Light Dependent Resistor (LDR) senses the light rays coming from opposite direction and the circuit automatically turns the head lamps from High to Low intensity. No. of ICs used: None.

E131

Cash Box Guard

Most thefts happen after midnight when people enter the second phase of sleep called ‘paradoxical sleep.’ Here is a smart security circuit for your cash box that thwarts the theft attempt by activating an emergency beeper.

E142

Digi Teacher

Now a days, the digital electronic techniques are employed to number of electronic devices and are applicable in diverse fields such as automobiles, electrical appliances, instrumentation and control equipments. Acting as Truth Table evaluator cum electronic learner circuit, this kit gives hands-on practice for learning and understanding digital design basics. The output is interactively displayed using LEDs.

E141

Bi color LED Sequential Running Light

In the Bi-color LED Disco Running Light Circuit, the red and green LEDs run in directions opposite to each other. As red and green LEDs are included in a single bi-color LED, it seems that both the colors are running in the same LED. Hence, this bi-color LED chaser circuit produces a sequence of red and green lights, the frequency of which can be easily varied by adjusting the preset in the circuit.

E140

Microcontroller based Battery status Indicator on LCD

The purpose of the Battery Low Indicator is to give a visual indication when a battery has been discharged below a specific level. This is especially crucial for re-chargeable batteries that should not be discharged below a certain voltage level. This lower voltage limit depends upon the type of the battery. The Battery Low Indicator circuit can be typically used for 12V batteries to give an indication of the battery voltage falling below the preset value. The indication is in the form of a flickering LED.

E150

Design Your Own Remote

Most home electronic gadgets like TV sets, stereo systems, CD/DVD players/recorders, air conditioners, microwave ovens, multimedia computers, set-top boxes etc come with a remote control. Presented here is an infrared remote control based on RC5 format. It employs an SC30310 encoder. The remote is a line-of-sight system with a range of about 5 meters. This circuit can be used in Remotely Programmable RTC-Interfaced Micro controller for Multiple Device Control and Remote Controlled Real Time Clock with Device Controller projects.

E151

Digital Dice with digital display based on random number generator algorithem

The digital dice presented here acts just like a normal dice. It has six faces like the normal dice and uses four different logic gate combinations to bring out the six faces of the dice. At the heart of the circuit is a microcntroller

E232

Cash Box Guard   

It is a security circuit that can activate an emergency beeper in case of theft. It can also be used to trigger any external burglar alarm unit.

E223

Laser Communication System  

This laser communication system transmits sound or music signals through a laser beam. It consists of a laser diode transmitter and a solar panel receiver

E220

Home Appliance Control Using TV Remote  

This circuit is designed to switch on/off any home or industrial appliance by using the TV/DVD remote controller. The circuit can be operated up to a distance of 5-10 metres depending on the remote used.

E218

Variable Timer with Music  

This simple timer can be set to run for different time settings ranging from 30 seconds to 4.5 minutes. Also, a musical note is played at the end of the set time.

E216

Door Knock Alarm With Timer  

This low-cost circuit sounds an alarm when there someone knocks on the door. It consists of a piezoelectric element plate fixed at the centre of the door wing by using cello tape.

E214

Mobile Bug  

This is a circuit for a mobile transmission detector which can detect use of a mobile phone within the range of 1.5 metres. Whenever usage of mobile phone is detected such as calling or texting a beep alarm starts sounding and a led blinks.

E210

Aquarium Probe  

This circuit of aquatic probe contains a signal diode that is used to monitor the temperature of water and indicate the rise in temperature through audio-visual indicators.

E207

Traffic Controller  

This is a circuit for a traffic controller that uses three 15 W bulbs as the red, amber and green lights. It can also be used to teach traffic rules to children.

E206

Night Alert  

This is a circuit that senses a dog's barking sound and then turns on a lamp for about two minutes.

E201

Pyroelectric Fire Alarm  

This circuit for a fire alarm has a piezo sensor that detects the temperature in the room. It sets off an alarm if the temperature increases by more than 10 C. Then, a solenoid pump connected to the circuit starts operating which can be used to spray foam or water on fire.

E200

Telephone Call Recorder  

This is a circuit that can be used along with a computer to record calls to a telephone. The telephone can be connected to the circuit, which in turn, can be connected to the computer. A software such as Audacity Audio Recorder records the call.

E191

Mini UPS System   

This circuit provides an uninterrupted power supply (UPS) to operate 12V, 9V and 5V DC-powered instruments at upto 1A current.

E184

Solar Lighting System   

This is a solar lighting system that uses a photovoltaic cell to charge a battery that can be used to light a lamp during night time. A transformer is also connected to charge the battery through AC.

E176

Electronic Security System   

This is a circuit for a security system that consists of three zones and a monitoring circuit. Each zone contains a sense switch of its own that sets off an alarm whenever any door is open and an indication is given in the monitoring system with an LED corresponding to the zone.

E169

Eight Channel Data Aquisition And Logging System:

The AVR based microcontroller system described here aquires analogue data from eight channels and sends it to a PC via UART channel.                              

Frequency Counter:

This is a circuit that uses IC NE555, five decade counters along with a 7-segment driver IC to form a 5 digit decimal counter. The output of the decimal counter is used to drive the numerical display of frequency counter.