Mini project list

1. Battery Charger Circuit Bringing Into Play SCR

This is one of the most fundamental and finest mini project for anyin electronics student. A SCR (Silicon Controlled Rectifier) ismade use of to fix the AC mains voltage for the battery charging.The circuit comprises of crucial transistor switching techniquesand the constituents used are inexpensive and are obtainable in allelectric shops.

2. Water Level Alarm Circuit

This circuit is brought into play to generate an alarm bell orlight, when the height of water climbs beyond a certain level. Thiscircuit makes use of a fundamental astable multi-vibrator preparedfrom an IC with 555timer. A resistance checks out is located on thetip at which the alarm has to be set ON, the moment the water goesup to that level, alarm starts to ring. The amount of constituentsrequired for this circuit is incredibly less and can beeffortlessly accumulated on a PCB.

3. Street Light Circuit

Street Light

This small mini project is employed to intend a street light thatglows up when night drops and mechanically switch OFF with thecrack of dawn. In order to sense the amount of daylight that isdesired to settle on when to discontinue the circuit and afterwardstimulate it. This is done with the aid of a sensor named as LDR(Light Dependent Resistor). The key theory employed at the back ofthe Light Dependent Resistor is that, the existence of light causesthe sensor’s resistance to go low & again brighten up. You can

adjust the circuit by inserting LED’s as a substitute of the 230volt light. This street light circuit is relatively simple tointend, and additional alterations can be done as per your choice.

4. Emergency Light Mini Project

This is a Light Dependent Resistor based Emergency Light thatswitches on a high watt white LED when the room is dark. It canalso be brought into play as a simple emergency lamp in the kid’sroom to steer clear of the panic situations in the event ofunexpected current failure. It provides sufficient glow in theroom. The circuit of Emergency Light is simple so that it can becreated in a tiny box. A 12 volt tiny battery is made use of togive power supply to the circuit. T1 and T2 are two transistorsemployed as electronic keys to switch ON or OFF the white LED. Toknow more about it, click on Automatic Emergency LED Light.

5. Low Cost Fire Alarm Circuit

Fire Alarm

This circuit is bring into play for spotting a fire and creating analarm, therefore awaking the populace in the premises where it isincorporated. A sensor transistor named BC177 is brought use of tosense the temperature formed owing to the fire. A predeterminedtemperature level can be held in reserve for the transistor. Themoment the temperature increases over the predetermined temperaturelevel, the escape current of the transistor mounts, as aconsequence driving other transistors in the circuit.  A relay isalso making use of to turn the bell load as its output. Theconstituents desired for the circuit can be attained effortlesslyand the circuit is simple to intend.

6. Air Flow Detector Circuit

This uncomplicated mini project is brought into use to intend anindicator to demonstrate the speed of air flow in a specified room.The air flow is sensed with the aid of a luminous bulb string. Thedeviations causing owing to the alteration of resistance in thebulb owing to the air flow are provided to the input of an equippedamplifier (LM339). Additional amendments can be done to the circuitand a number of them are given discussed as well.

7. Telephone Operated Calling System

This telephone operated alarming or calling circuit is extremelyuseful for doctors in signaling the patients, in financialinstitutions and in a variety of other circumstances whereindividuals have to be signaled or called. When you require callingan individual amid many resting outside your office, just raise thetelephone receiver off the structure and push the respectivenumber. The number of the individual called will be exhibited andsignals will resonance to notify the individual that is called. Acommonly used receiver IC named DTMF (Dual-tone multiple-frequency)is equipped in telephone set. The electronic circuit comprise ofone common Dual-tone multiple-frequency receiver named HoltekHT9170.

8. Electronic Card Lock System

Electronic Card Lock System

The circuit existing here can be employed as a security device(Lock) for vital electronic or electrical machines. When card ispopped inside the machine, depending on the situation of the holepunched on the card, a precise machine would be turned ON. The card

is introduced in the machine just like an ATM card inserted insidethe ATM machine slot. This card is rectangular in shape with justone hole punched on it. The electronic card circuit brings intoplay eight photo-transistors (T1 to T8). When no card is there inthe lock, illumination from luminous lantern L1 of 40- watt & 230Vdrops on all the photo- transistor sensors. If a wrong attempt ofinserting the card is made, then the card will not go insidemachine completely and thereby the system will not be unlocked.

9. Servo Motor Controller

This is an uncomplicated fundamental design of Servo pulseproducer. It brings into play an IC named CMOS 7555 in the Astablemode to produce pulses to force the servo motor. The servo motorcircuit can be aptly altered to get pulses of adequate length. Aservo is a tiny machine that has a productivity shaft. Thisproductivity shaft can be located to precise angular locations bypropelling the servo a coded indication. As long as the codedindication survives on the input line, the servo will uphold theangular location of the productivity shaft. The angular location ofthe shaft is determined by the length of a pulse that is functionalto the power wire. This is also known as Pulse Coded Modulation.

10. Single Chip FM Radio Circuit

This FM Radio mini project is primarily intended for B.tech ECscholars. An IC named TDA7000 is employed for the reason. The IC isincorporated with a Frequency Locked Loop mechanism with anintermediary frequency of 70 kHz. There have been a lot ofcriticisms that the IC is outdated. The intermediary frequency pickability is attained by active RC strainers. The single functionwhich wants alliance is the echoing circuit for the oscillator,therefore picking the reaction frequency. False reception is evadedby means of a silent circuit, which also eradicates too deafeninginput signs. Particular steps are used to assemble the radiationnecessities.

Embedded Systems Mini Projects

In addition to the embedded system projects for final year ECEstudents , the below mentioned list contains some more embedded-based projects ideas for the 3rd year students for their miniprojects. Students who are carrying out their mini projects canrefer these ideas for selecting the best and advanced electronicproject.

1. Traffic Signal Control Based on Density at the Junctions WithRemote Override Facility

Patient Monitoring Circuit By EDGEFX Technologies

2. Electrical Load Control Using PC Based Commands3. Temperature Controller For Industrial Operations4. ZIGBEE Technology  Based Passenger Information System of

Transportation5. TV Remote Operated Cordless Mouse for the PC using PIC

Microcontroller6. Patient Monitoring System   Using GSM Technology7. Switching of Electrical Loads Based on IR Obstacle Detection8. Railway Track Crack Detection Robotic Vehicle9. Prepaid Card Based Bus Fair System10. Implementation of PID Controller for Closed Loop Operationof

DC Motor11. RFID Based  Institutional Attendance System 12. Microcontroller Based Water Level Indicator  Cum Controlling

System Using IR Sensors

13. Remote Industrial Plant SCADA System14. Home Monitoring and Control System for Elder Persons15. Automatic Water Pumping System Using MPPT Controller16. Microcontroller Based Line following Robotic Vehicle

Line following Robotic Vehicle Circuit

17. Solar Panel Generation  with Sun Tracking Technique18. Train Collision Avoidance System19. Implementation of Voice Based Security System20. Speed Control of Brushless DC Motor with RPM Display21. Petrol Level Indicator Using RF Wireless Technology for

Automobiles22. Implementation of Object Counter of Commercial Systems with 7

Segment Display23. GSM Based Wireless Energy Meter Reading Upon SMS to Utility

Companies24. Ultrasonic Sensor Based Parking Guidance System25. Mobile Charger Design  Using Solar Power26. Android Mobile Operated Robotic Vehicle for Store Management27. Embedded RTC  Based Device Control For Industries28. IR-based Automatic Room Light Control System for Homes29. Touch Screen -based Vehicle Driving System30. ACPWM-based Soft Start of Single Phase Induction Motor

Electronics Projects for Engineering Students:Search: 

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1 Water Level Controller using 8051 Microcontroller: Here we are designing the circuit which is used to detect and control the water level automatically in overhead tank using8051 microcontroller. It is used in industries to control the liquid level automatically.

2 Car Parking Guard Circuit Using Infrared Sensor: This circuit helps the person in the driving seat in such a way that it gives an alarm if there is any obstacle or a wall while parking or while driving in reverse. It is very useful in our real life.

3 Cell Phone Detector: This is a simple circuit which helps to detect the presence of an activated cell phone by detecting the signals in the frequency range of 0.9 to 3GHz. It helps in mobile phones tracking which are used for spying.

4 Bidirectional Visitor Counter using 8051: This Bidrectional Visitor Counter Circuit is helpful to count the number of persons entering or leaving a room and to display it on ascreen.

5 Password based Circuit Breaker: This password based circuit breaker project is built using 8051 controller and is used to switch off the power supply to the line by enteringa password.

6 Temperature Controlled DC Fan using Microcontroller: The main principle of the circuit is to switch on the fan connected to DC motor when the temperature is greater than a threshold value.This can be used in home applications and in cpu to reduce heat.

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7 Auto Intensity Control of Street Lights: This is a simple circuit that automatically controls the intensity of street lights which is designed using microcontroller and LEDs.

8 Line Following Robotic Circuit using ATMega8 Microcontroller: This line follower robot is a basic robot that follows a specific path indicated by a line having some particularwidth.

9 Digital Tachometer using 8051 Microcontroller: Here we designed a simple non contact tachometer using microcontroller which can measure speed with an accuracy of 1 rev/sec.

10 5 Channel IR Remote Control System using Microcontroller: This article is aimed to design and demonstrate a simple 5 channel remote control system to drive five loads. This circuit works on the principle of IR communication.

11 Bipolar LED Driver Circuit: This bipolar LED driver circuit is very useful at the placeswhere flashing of light is required, as in beacon flashing. This circuit can be mainly used for indication purposes.

12 Celsius Scale Thermometer using AT89C51: This Celsius Scale Thermometer circuit is designed using at89c51 and lm35. This circuit works on analog to digital conversion principle. It can be used at homes, mobile places like cars to keep a track of the temperature.

13 Density Based Traffic Signal System using Microcontroller: In this system, we use IR sensors to measure the traffic density. We have to arrange one IR sensor for each road; these sensors always sense the traffic on that particular road. All these sensors are interfaced to the microcontroller. Based on these sensors, controller detects the traffic and controls the traffic system.

14 Automatic Washroom Light Switch: This is a simple but very useful circuit in our real

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life which helps to automatically turn On the lights when a person enters the washroom and it automatically turns Off the lights when he leaves it.

15 Automatic Door Bell With Object Detection: This automatic doorbell with object detectioncircuit helps to sense the presence of a person or an object automatically and rings thedoorbell.

16 Water Level Indicator: This Water Level Indicator project employs a simple mechanism which helps to detect and indicate the water level in an overhead tank or any other water container. It can be used in Hotels, Factories, Homes Apartments, Commercial Complexes, Drainage, etc.

17 Password Based Door Lock System using 8051 Microcontroller: This system demonstrates a password based door lock system wherein once the correct code or password is entered, the door is opened and the concerned person is allowed access to the secured area. Aftersome time, the door would be closed. Read this post completely to get more information.

18 Boolean Algebra Calculator: This Boolean algebra calculator is an interesting project which is more useful in our real life by working as a portable calculator to simplify the Boolean expression on the fly. In our circuit, we use Boolean algebra simplificationmethods like the Quine-McCluskey algorithm to simplify the Boolean expression and display the output on the display.

19 Auto Night Lamp using High Power LED: This Auto Night Lamp is an interesting circuit which helps to turn ON the LED lights interfaced to it at night time and it turns OFF the lights automatically when it is day.

20 Mobile Jammer Circuit: This circuit is used to block the signals of cell phones with in the range of 100 meters. This circuit can be used in TV transmission and also for remotecontrolled toys or play things.

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21 Unbiased Digital Dice with LEDs: This is a circuit diagram of digital dice which is nearly unbiased. By using this circuit, there is no chance to cheat as the circuit operates at such a high speed that the circuit is almost imperceptible to the human eye.

22 Metal Detector Circuit: This is a simple metal detector circuit which is very useful forchecking the person in shopping malls, hotels, cinema halls to ensure that person is notcarrying any explosive metals or illegal things like guns, bombs etc.

23 Panic Alarm: This panic alarm circuit helps us to intimate others regarding our bad situation without any delay. It is more useful when an intruder entering our house or bad health status at which we are unable to intimate to the people around us.

24 Wire Loop Breaking Alarm: This circuit works as a continuity tester device which tests the continuity of the wire at hand. It is an indispensable tool to check broken wires and undesired shorting of wires.

25 Rain Alarm Circuit: Rain water detector will detect the rain and make an alert; rain water detector is used in the irrigation field, home automation, communication, automobiles etc. Here is the simple and reliable circuit of rain water detector which can be constructed at low cost.

26 Automatic Plant Irrigation System: This project circuit is more useful in watering plants automatically without any human interference. It is more useful when the owner isnot present in the home for few days.

27 Hot Water Geyser Controller Circuit: This circuit is made to turn OFF geysers as soon asour water gets hot and are ready for bathing.

28 Lead Acid Battery Charger Circuit: Lead Battery is a rechargeable battery and is more useful in our real life as it will dissipate very little energy, it has very low energy to weight ratio, it can deliver high current, can work for long time with high

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efficiency and is very low cost.

29 Motion Detector Circuit: The motion detector is not only used as intruder alarm but alsoused in many applications like home automation system, energy efficiency system, etc. The motion detector will detect the motion of the people or objects and give the appropriate output according to the circuit.

30 Digital Voltmeter Circuit using ICL7107: Here we designed a analog to digital converter working as a digital voltmeter using a low power three and half digit A/D converter ICL7107 having internal 7 segment decoders, display drivers, a reference and a clock.

31 8 Channel Quiz Buzzer Circuit using Microcontroller: We built the circuit using a microcontroller which scans the input from push buttons and displays the corresponding number on a display device.

32 2 Digit Up Down Counter: The main principle of this circuit is to increment the values on seven segment displays by pressing the button. This circuit can be mainly used in scoreboards.

33 Bike Turning Signal Circuit: The objective of this circuit is to indicate left or right turn for bike/vehicle. Two identical circuits are needed, one is for left and the other is for right. The main heart of this circuit is 555 timer.

34 Automatic Changeover Switch: This is a simple automatic changeover circuit in which DC load like a series of LEDs are driven either by a battery or an AC-DC power supply.

35 UP/DOWN Fading LED Lights: This is a simple up/down fading LED lights circuit which can be used in shopping malls, home and security applications."/>

36 Police Lights using 555 Timer: This circuit simulates the police car lights by alternateflashing. This circuit flashes red LEDs for three times and blue LEDs for three times. �

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This flashing action performs continuously. This circuit uses 555 timer and a decade counter.

37 PWM based DC Motor Speed Control using Microcontroller: Here is a simple DC Motor speed control circuit designed using AVR Microcontroller. Here we use a technique called PWM (pulse width modulation) to control the speed of DC motor.

38 Ding Dong Sound Generator Circuit: This is ding dong sound generator circuit is designedusing 555 timer IC in astable mode. It can be used as doorbell. With some modifications,it can be used to produce different sounds. Read this post for complete details.

39 PIR Sensor Based Security Alarm: This article explains about PIR based security system in which PIR sensor is used instead of transmitter or receiver. This saves the power consumption and is low cost. This circuit can be used in the museums to protect the valuable things.

40 TV Remote Control Jammer: This proposed TV jammer circuit confuses the infrared receiverin a TV by producing the constant signal that interferes the remote control signal. If you switch on the circuit once, the TV will not receive any command from the remote. This allows you to watch your own program without anyone changing the channel or volume.

41 Super Sensitive Intruder Alarm: This circuit is designed to alert the user when an intruder enters into the home. If there is any obstacle in front of IR sensor, it generates an interrupt signal. This interrupt signal is given to the speaker to alert the user.

42 Remote Control Circuit through RF without microcontroller: Here we have used RF434 MHz modules to make wireless remote. Using this remote, we can control the appliances withinthe range of 100 meters. It is used for remote control applications like burglar alarm, car door alarm, calling bell, security systems, etc.

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43 High and Low Voltage Cutoff with Delay and Alarm: This high and low voltage cutoff with delay alarm circuit is an advanced automatic voltage stabilizer circuit and is used to protect our home appliances. It's cost is less as compared to voltage stabilizers.

44 Solar Battery Charger Circuit: Here is the simple circuit to charge 6V, 4.5Ah rechargeable Lead-acid battery from the solar panel. This solar charger has current and voltage regulation and also has over voltage cut off facilities. This circuit may also be used to charge any battery at constant voltage because output voltage is adjustable.

45 Car Battery Charger Circuit: This article aims to describe the principle of operation, design and working of a simple car battery charger from AC mains supply and a feedback control section to control the battery charging.

46 Simple 100W Inverter Circuit: This is a small Inverter circuit which converts the directcurrent (DC) to alternating current (AC).

47 Fire Alarm with Siren Sound: This circuit alerts us when there is a fire accident at home by ringing a siren sound instead of a buzzer.

48 Construction of Basic Logic Gates using NOR Gate: Here, we have shown how to construct the basic logic gates - NOT, AND, OR gates using NOR Gate which is one of the universal gates.

49 Police Siren Circuit using NE555 Timer: This circuit produces a sound similar to the police siren. You may also get detailed information about pin diagram and internal blockdiagram of NE555 timer.

50 100W MOSFET Power Amplifier Circuit: A power amplifier circuit using MOSFET has been designed to produce 100W output to drive a load of about 8 Ohms.

51 Intelligent Unambiguous Night Lamp Switcher: This is the circuit diagram of unambiguous

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night lamp switch, which turns ON our domestic lights automatically when it is dark, without human interference. It also avoids repeated frequent switching of the devices which is usually ignored in most similar circuits but may have a detrimental effect on our operating devices.

52 Automatic Railway Gate Controller with High Speed Alerting System: The main aim of this project is to operate and control the unmanned railway gate in the proper manner in order to avoid the accidents in the unmanned railway crossing.

53 LED Flasher Circuit: LED Flasher is a simple circuit which will blink the LEDs in regular time period. This circuit can be used for decoration purpose or can be used for a signaling purpose and many more.

54 Dancing Bi-Color LED Lights Circuit: Generally we use small voltage bulbs in the dancingbulbs. This circuit is mainly used in the occasions, decoration articles or in visual indication sign boards etc. In this project, we use bi-color LEDs for sequential runninglight.

55 Thermistor Temperature Sensing Alarm: This circuit is a temperature sensing as well as alarm circuit. The circuit raises an alarm whenever the temperature crosses a certain limit.

56 Pull Pin Security Alarm System: This circuit helps us to get alerted when anybody picks our pockets or bags. The circuit is very helpful to prevent our goods getting pick pocketed.

57 Auto Turnoff Soldering Iron Circuit: This circuit helps the soldering iron to turn off automatically when it detects overheating and thereby avoids it from getting damaged.

58 Remote Operated Alarm Circuit: This circuit rings an alarm when you point a TV remote atit and press on any button. This can be used as a calling bell to call your assistant.

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59 Battery Charger Circuit Using SCR: Here is the circuit diagram of battery charger circuit using Silicon Controlled Rectifier. SCR can be used in half wave rectifier, fullwave rectifier, inverter circuits, power control circuits, etc.

60 FM Bugger Circuit: Here is small circuit with which you can listen to another people conversation from long distance using the normal FM radio set. This FM bugger circuit iskept in room where you want listen the conversation. You can listen to this conversationusing the normal FM radio set.

61 Battery Powered Portable Light: This circuit is more helpful in handling unexpected and undesired darkness in our homes or offices. It provides considerable amount of brightness required to do our daily tasks.

62 IR Remote Control Switch: By using this circuit, we can control any house hold appliancewith the help of remote. In this project, there are two parts  one is in transmitting �section and the other is in receiving section. Receiving section will be in a stable position which is connected to any load and transmitter will act as a normal remote

63 Cell Phone Controlled Robotic Vehicle: This is simple DTMF based Cellphone controlled robotic vehicle circuit without using microcontroller. It can be used in industries and surveillance systems.

64 Human Detection Robot using 8051 Microcontroller: The main principle of the circuit is to detect the human using human detection sensor. The wireless robot is operated manually using PC. The wireless technology used here is Radio Frequency technology. The data is transmitted to receiver through RF.

65 SMS Controlled Robot: GSM controlled robot or SMS controlled robot is a wireless robot which performs the necessary actions by receiving a set of instructions in the form a Short Message Service (SMS).

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66 Remote Password Operated Electronic Home Appliances: This circuit explains you how to control the electrical appliances using an Android device. Here, Bluetooth module is interfaced to 8051 microcontroller. This Bluetooth receives the commands from the Android application device using wireless communication.

67 Metal Detector Robotic Vehicle: Land mines buried under the ground causes threat to the lives and affect the economy of the nation. Detection and removing of these mines manually is a dangerous task. So, we use a metal detection robot which works on RF technology.

68 Water Level Alarm Using 555 Timer: This is a simple and low cost hardware project using a 555 timer circuit. The aim of this project is to design a water level detecting alarm with simple and low cost hardware without compromising on the performance of the device.

69 Speed Control of DC Motor Using Pulse Width Modulation: This pulse width modulation technique is the more efficient way to proceed to manage the speed of our DC motor manually.

70 Sun Tracking Solar Panel: This article describes about circuit that rotates solar panel.This Sun tracking solar panel consists of two LDRs, solar panel, stepper motor and ATMEGA8 Microcontroller.

71 Touch ON and OFF Switch Circuit: This Touch ON/OFF Switch circuit is more useful in sucha way that we can automatically ON or OFF any switch by touching a device without movingfrom our place.

72 USB Mobile Charger Circuit: This circuit is useful in charging the mobiles through USB outlet present in our laptops and PCs. For the charging of your mobile phone, this circuit provides you a regulated voltage of 4.7 volts.

73 Security Alarm Circuit: This circuit helps you to guard your precious documents as well as jewellery from intruders or theft. All you need is to just place this circuit in

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front of the locker or below the mat so when any unknown person come and walk over the switch, the circuit will trigger and sound of alarm comes.

74 Mosquito Repellent Circuit: Here is the simple electronic mosquito repellent circuit which can produce ultrasound in the frequency range of 20-38 kHz, which can scare away mosquitoes.

75 Simple FM Radio Jammer Circuit: This is a Jammer circuit which is used to block the signals. Jammer circuit produces the high frequency signal which will confuse the receiver of particular system from receiving the signal, even though circuit is working properly, user of the system feels that circuit is not working properly.

76 Automatic Street Light Controller Circuit Using Relays and LDR: This circuit helps in automatically turn ON/OFF the street lights using relays and LDR. The whole circuit is based on IC CA3140.

77 Battery Charger Circuit: This battery charger circuit works on the principle of controlling switching of an SCR based on charging and discharging of battery.

78 PWM LED Dimmer Using NE555: The Pulse Width Modulation (PWM) plays an important role in controlling the circuits. We use this PWM to dim the intensity of light of the LED.

79 Simple Fire Alarm Circuits: Here are two simple fire alarm circuits which are used to detect the fire automatically and inform to the people immediately with an alarm.

80 Wireless Switch Circuit using CD4027: This is a simple circuit which needs no physical contact with the appliance. In this circuit, all you need is to pass your hand above LDRto ON or OFF the switch.

81 Electronic Letter Box: This is a simple circuit which helps in finding out any letter

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dropped in our box by stopping the LED lights attached in this circuit.

82 Clap Switch Circuit for Devices: This is another simple but very useful circuit which helps to ON or OFF a device without moving from you place and also helps to control the speed of the electric devices like fan, etc.

83 12v DC to 220v AC Converter Circuit: Here is a simple voltage driven inverter circuit which converts 12v DC signal to single phase 220v AC using power transistors as switching device.

84 FM Transmitter Circuit: Here we built a wireless FM transmitter which uses RF communication to transmit the medium or low power FM signal. The maximum range of transmission is around 2 km.

85 100w Subwoofer Amplifier Circuit: Here is the circuit diagram and working of 100w subwoofer amplifier circuit. A Subwoofer is a loudspeaker which produces audio signals of low frequencies.

86 DTMF Based Home Automation System Circuit: This is a simple and very useful circuit in our real life named DTMF controlled home appliances system. It helps to control the homeappliances using DTMF technology.

87 Street Lights that Glow on Detecting Vehicle Movement: This article describes about the circuit that switches the street lights on detecting vehicle movement and remains off after fixed time. This system controls the street lights using light dependent resistor and PIR sensor.

88 555 Timer IC Testing Circuit: This is a simple 555 IC testing-circuit which tests your entire 555 timer IC. So before using your IC, you may check whether your IC is good or bad by using this circuit.

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89 Curtain Opener/Closer Circuit: This circuit will open and close the curtain of your homeand office just by pushing a switch. So with the help of this unique circuit, we do not need to move from one place to open and close the curtain.

90 Variable Power Supply and Charger: This is a circuit which helps to check or test your electronic projects and also to charge the Mobile phone batteries. This circuit can alsowork as an emergency light.

91 LED Running Lights Circuit: This is a simple circuit consists of 9 LED lights in knight rider scanner mode. It will present an eye catching look as the LED initially travel in the one way and then travel reverse in the similar direction.

92 Luggage Security Alarm: This is a simple alarm circuit which helps in ringing a warning alarm when someone tries to steal the luggage.

93 9 Way Clap Switch Circuit: This circuit helps you to manage your appliances in your homeby just clap without moving from your bed.

94 12V to 24V DC Converter Circuit: This is another kind of circuit which helps to convert 12V DC current to 24V DC current.

95 230V LED Driver: Here we design a simple circuit driving a series of LED from 230V AC. This is accomplished using a capacitor based power supply. This is a low cost and efficient circuit and can be used at homes.

96 3X3X3 LED Cube: This is a simple a simple LED cube circuit designed without using microcontroller. It is based on the principle of driving LEDs using the clock pulses.

97 Monostable Multivibrator Circuit Operation: Here is the monostable multivibrator circuitdiagram and working. Multivibrator is an electronic circuit which will work as two stageamplifier operating in both stable and astable mode.

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98 Interfacing16X2 LCD with PIC Microcontroller: This is a circuit which helps in interfacing 16Ã2 LCD to PIC18F4550 microcontroller which is of family PIC18F�

99 555 Timer in Monostable Multivibrator Mode: The circuit is triggered by a falling edge, that is, by a sudden transition from HIGH to LOW. The trigger pulse, produced by pressing the button, must be of shorter duration than the intended output pulse.

100 555 Timer as an Astable Multivibrator: In this circuit, There are three resistors named R inside it and all have equal values. These form a voltage divider having reference voltages of 1/3 and 2/3 of Vcc (the power supply). The logic state of the flip flop is controlled by the reference voltage which is given to one of the inputs of both two comparators.

101 Mains Operated LED Light Circuit: This is a simple circuit which is more useful to save our resources, energy and money by installing in your homes.

102 LED Lamp Dimmer Circuit: In this circuit, at the starting LED glows slowly, then grown brighter and once again slowly it became dim. The basis of the whole circuit is an operational amplifier IC named LM358.

103 Variable Voltage Power Supply from Fixed Voltage Regulator: This Voltage regulator circuit is used to get fixed voltage at the output without depending on the input voltage.

104 LED Christmas Lights Circuit: This is a simple circuit used to decorate your house by building christmas lights using LEDs. The lights will get ON at night and OFF in morningtime.

105 Audio Equalizer Circuit: The circuit is used to change the tune/melody into a different pitch level by devoid of loss in the tune. It is mainly useful to music lovers.

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106 Air Flow Detector Circuit: This Air flow detector circuit can be used to detect the flowof air in areas like car engine. It can also be used as temperature detector.

107 150W Power Amplifier Circuit: Here we designed a power amplifier circuit using push pullclass AB configuration to derive a power of 150W to drive a load of 8 Ohms (speaker).

108 7 Segment LED Display Decoder: This is the circuit diagram of display decoder which is used to convert a BCD or binary code into a 7 segment code used to operate a 7 segment LED display.

109 Digital Temperature Sensor: The main principle of this circuit is to display the digitaltemperature value. These are mainly used in environmental applications.

110 Digital Stopwatch Circuit: This is a simple circuit that displays count from 0 to 59, representing a 60 second time interval. It consists of a 555 timer to produce the clock pulses and two counter ICs to carry out the counting operation.

111 Toy Organ using 555 Timer IC: This is the circuit diagram of simple Toy Piano using 555 Timer IC. It produces different tones or sounds depending on the frequency range.

112 RFID based Attendance System: This simple RFID based attendance system is designed usingATmega8 Microcontroller and is mainly used in educational institutions, industries, etc.where authentication is needed.

113 Low Power Audio Amplifier using 555 Timer: This is a simple low power audio amplification circuit designed using 555 timer. It can be used to develop low power music systems used in vehicles.

114 Interfacing 16X2 LCD to AVR Microcontroller: This is a circuit which helps in interfacing 16X2 LCD with AVR Microcontroller. The Atmega16 belongs to the AVR

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microcontroller family.

115 Polarity cum Continuity Tester: With the help of this circuit, we can also identify whether the components we are using in our circuit are good or bad before mounting them on the PCB.

116 Reaction Timer Game Circuit: This is a simple and funny game circuit which contains 10 LEDs that are moving in an arbitrary fashion and we have to target a particular LED given by your challenger.

117 Understanding 7805 IC Voltage Regulator: This is a circuit diagram of 7805 IC which is a5v DC regulated IC. It is very flexible and is employed in many circuits like a voltage regulator.

118 Basic Logic Gates Using NAND Gate: We are all well known that NOT, AND, OR are the basiclogic gates. Here we have shown how to design these basic logic gates using one of the universal gates - NAND Gate.

119 Dummy Alarm Circuit: The main principle of the circuit is to flash an LED for every 5 seconds. The circuit consists of 7555 timer IC as main component.

120 Reverse Parking Sensor Circuit: If you are a new driver then it is very difficult to judge the distance while parking the car. Reverse parking sensor circuit solves this problem by indicating the distance with the help of three LEDs. We can easily arrange �this system at the back side of the car.

121 Automatic LED Emergency Light Circuit: This is the simple and cost effective automatic emergency light circuit with light sensing. This system charges from main supply and gets activated when main supply is turned OFF. This emergency lamp will work for more than 8 hours.

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122 One Transistor Electronic Code Lock System: The main principle of this circuit is that the door lock opens only when the buttons are pressed in an order. The transistor and diode plays a main role in the circuit.

123 Automatic Battery Charger: This charger automatically shut off the charging process whenbattery attains full charge. This prevents the deep charge of the battery. If the battery voltage is below the 12V, then circuit automatically charges the battery.

124 Light Activated Switch Circuit: The main principle of this circuit is to switch ON the light when the LDR is illuminated. This circuit can be used in security applications like when there is darkness on the LDR, it stops lighting.

125 Remote Operated Spy Robot Circuit: This is a simple spy robot circuit which can be controlled by the remote. The maximum controllable range is 125 meters. It is used to observe the behavior of wild animals where human beings cannot reach.

126 Digital Voltmeter using 8051 Microcontroller: This is a simple digital voltmeter circuitdesigned using 8051 microcontroller. This circuit measures the input voltage from 0V to 5V. Here, the input voltage should be DC voltage to get the accurate output on LCD.

127 Ultrasonic Rangefinder using 8051: This circuit explains you how to measure the distanceusing 8051 microcontroller. This ultrasonic range finder system measures the distance upto 2.5 meters at accuracy of 1 cm.

128 Stepper Motor Interfacing with 8051 Microcontroller: The main principle of this circuit is to rotate the stepper motor step wise at a particular step angle. The ULN2003 IC is used to drive the stepper motor as the controller cannot provide current required by themotor.

129 Frequency Counter Circuit: Here we design a simple frequency counter system using two timers and two counters. While one of the Timer IC is used to produce clock signals, the

SNO Electronics Projects

other is used to produce the time limited signal of one second.

130 Interfacing 7 Segment Display to 8051: This article describes you how to interface sevensegments to AT89C51 microcontroller. This system displays the digits from 0 to 9 continuously with a predefined delay.

131 LC Meter using 555 Timer: This is a simple LC Meter circuit designed using 555 Timer and8051 microcontroller. It is mainly used to measure value of a reactive element like a capacitor or an inductor.

132 TV Transmitter Circuit: The main principle of this circuit is to transmit the audio and video signals. Here audio signals are frequency modulated and video signals are PAL modulated. These modulated signals are applied for the antenna.

133 DC Motor Interfacing with 8051 Microcontroller: Here is a simple but very useful circuitin our real life named interfacing DC motor with 8051 microcontroller. It describes you how to control the DC motor using AT89C51 controller.

134 Stun Gun Circuit: This Stun gun circuit is mostly used as a weapon to stun or send shockwaves to the target with the intention to weaken or paralyze it.

135 Transistor Intercom Circuit: This transistor intercom circuit is a simple two way intercom circuit which is used for the dual purpose of sending as well as receiving signals.

136 LED Interfacing with 8051: The main principle of this circuit is to interface LEDs to the 8051 family micro controller. Commonly, used LEDs will have voltage drop of 1.7v andcurrent of 10mA to glow at full intensity. This is applied through the output pin of themicrocontroller.

137 Wailing Siren Circuit: The main principle of this circuit is to produce a wailing siren.

SNO Electronics Projects

The 555 timer IC is operated in astable mode. When the switch is pressed, speaker produces high pitch siren and when it is released, its pitch decreases and is switched off after 30 seconds.

138 Audio Tone Control Circuit: This article explains you how to design an audio tone control circuit with the gain of around 25. This design needs less number of components and it is cost effective.

139 FM Remote Encoder/Decoder Circuit: This is a simple post which shows you how to design FM remote encoder and decoder circuit using RF600E and RF600D ICs. This pair of encoder and decoder ICs establishes the communication with high level security. The operating voltage of these ICs is from 2V to 6.6V DC.

140 Wireless Mobile Battery Charger Circuit: This circuit mainly works on the principle of mutual inductance. This circuit may be used as wireless power transfer circuit, wirelessmobile charger circuit, wireless battery charger circuit, etc.

141 Battery Level Indicator: This article explains you how design battery level indicator. You can use this circuit to check car battery or inverter. So by using this circuit, we can increase the lifetime of battery.

142 FM Radio Circuit: FM Radio circuit is the simple circuit that can be tuned to the required frequency locally. This article describes the circuit of FM radio circuit. Thisis a pocket sized radio circuit.

143 LED Lamp Circuit using USB Port: This is a simple USB LED Light circuit which produces an output of 5v. It may be used as emergency light and also as a reading lamp.

144 Interfacing GPS with 8051 Microcontroller: In this interfacing of GPS with 8051 circuit,GPS module calculates the position by reading the signals that are transmitted by

SNO Electronics Projects

satellites.

145 How to Interface Real Time Clock with PIC18F: Get an idea about RTC, PIC Microcontrollerpin diagram and how to interface RTC with PIC18F. RTC is an integrated circuit which keeps track of current time.

146 Random Number Generator using 8051: This circuit helps to generate a random number in between 0 to 100 when push button is pressed and it may be used in the games like monopoly, snake ladder.

147 Active Audio Crossover Circuit: Audio crossover is an electronic filter used in audio applications to send the appropriate signal to the speakers or drivers. This circuit is used in HiFi audio systems to separate the frequency bands from audio signal.

148 IR Audio Link Circuit: This simple IR audio link circuit is used to transmit audio signals wirelessly. This IR audio link is able transmit audio signals up to 4 meters.

149 Cellphone Controlled Home Appliances: This mobile controlled home automation system is designed without using microcontroller. We can also control a robot using this technology by making some modifications.

150 Variable Voltage Power Supply: This helps to design a variable power supply circuit which will provide 0 to 28V at 6 to 8 amps. It can be used in various power amplifiers and oscillators to provide DC supply.

151 Digital Clock using 8051: This circuit displays the time on LCD. For this clock, we can set the time at any instant. Here the clock works in 24 hour mode and the RTC chip is configured by programming 8051 controller.

152 GSM Interfacing with 8051: The main principle of this circuit is to interface a GSM

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modem with the microcontroller. The microcontroller used is AT89C51 microcontroller.

153 Multi Channel Audio Mixer Circuit: This audio mixing circuit has 2 MIC inputs and 2 lineinputs. If you want to increase the input channels according to the application then addsame circuit in parallel with the existing circuit.

154 Puff to OFF LED Circuit: The main principle of the circuit is to turn off the LED by a puff. The puff applied to the mic is converted into a voltage whose value is very small.This voltage is amplified and applied to the circuit in order to make the led turn off.

155 Biometric Attendance System: The main aim of this circuit is to take the attendance using biometric method and display when requested. This can be used in educational institutions, industries, etc.

156 Light Activated Alarm Circuit: The main principle of this circuit is to produce sound depending on the light intensity falling on the circuit. As the light intensity falling on the circuit increases, it produces pulses with more duration and thus producing more sound. The main part of the circuit is 555 timer IC.

157 Electronic Eye Controlled Security System: This is a simple electronic eye controlled security system circuit designed using 7805 voltage regulator and LDR. It is used in security applications.

158 USB Sound Card Circuit: This USB sound card circuit is a device which allows an embeddedsystem to create and record real and high quality sound. Read this post for more details.

159 10 LED VU Meter Circuit: VU Meters are used in many applications like discotheques to measure the level of audio signals. Here is the circuit diagram and working of LED VU Meter.

SNO Electronics Projects

160 Hi-Fi Dx Bass Circuit: This Hi-Fi Dx Bass Circuit describes the design, principle and operation of a two stage bass boosting circuit using simple high and low pass filters.

161 Wireless Electronic Notice Board using GSM: This wireless electronic notice board using GSM Technology and microcontroller circuit is used to display the data on LCD whatever we sent from the mobile.

162 Working of light dependent resistor

163 Wireless Remote to Control 255 Different Appliances Individually

164 Wireless motor control through RF

165 Wireless message Communication Between Two Computers

166 Wireless Electronic Notice Board Using GSM

167 Wireless Control Of Robotic Arm

168 Wireless Audio Transmitter for TV

169 Water Tank Overflow Alarm

170 Water Sensor Circuit

171 War Field Spying Robot with Night Vision Wireless Camera

172 Voltage Doubler Circuit Using IC 4049

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173 Voltage boost by using a resistor with 78XX

174 Voice Controlled WheelChair

175 Visually Camouflaged Vehicles for Military Purposes

176 Visual Monitoring and Alerting System for Restricted Areas

177 Vision Operated Home Automation For the Physically Disabled

178 Video Activated Relay to Control the Load

179 Vibration Alert System for the Deaf

180 Velocity Detector Using Ultrasonic Means

181 Vehicle Indicator

182 Variable power supply and charger with emergency light

183 Using TV Remote as a Cordless Mouse for the Computer

184 User Defined String Display and Marquee Scrolling using LED Array

185 UPFC Unified Power Factor Control

186 Unique Office Communication System Using RF

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187 Understanding Decade Counter CD4017

188 Underground Cable Fault Distance Locator

189 UM3561 IC Based Security Alarm

190 Ultra Fast Acting Electronic Circuit Breaker

191 Turn ON at Night Light Controller with Single Sensor Ambiguity Elimination

192 Tsunami Detection and Social Broadcast System

193 Transistor based Security Alarm

194 Transistor Based Secret Bell

195 Transistor as audio amplifier

196 Transformerless Low Loss DC Converter

197 Touch Screen Based Remote Controlled Robotic Vehicle for Stores Management

198 Touch Screen Based Industrial Load Switching

199 Touch Screen Based Home Automation System

200 Touch Controlled Load Switch

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201 Tone generator Circuit Diagram

202 Toggle switch using CD4017

203 Toggle flip flop using CD4013

204 Timer Circuit using IC CD 4060

205 Timer Circuit using IC 4026

206 Timer Based Code Lock

207 Timed Switch With User Defined ON and OFF Intervals

208 Time Delay Based Relay Operated Load

209 Thyristor Power Control by IR Remote

210 Thyristor Controlled Power for Induction Motor

211 Thumb Sized Adjustable Voltage Step Up Circuit

212 Three Phase Solid State Relay with ZVS

213 Three Phase Fault Analysis with Auto Reset on Temporary Fault and Permanent Trip Otherwise

214 Thermistor Based Temperature Control

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215 Theft Intimation of Vehicle Over SMS to Owner Who Can Stop the Engine Remotely

216 Text to Speech Conversion For Indian Languages

217 Temperature Broadcaster to Twitter Using Arduino Ethernet Interface

218 Tampered Energy Meter Information Conveyed to Concerned Authority by Wireless Communication

219 Synchronized Traffic Signals at Various Junctions Using PIC Microcontroller

220 SVPWM Space Vector Pulse Width Modulation

221 Suitcase Security Alarm

222 Step Up 6 Volt DC to 10 Volt DC Using 555 Timer

223 Stamp Value Calculator for Postage Needs

224 Staircase Light That Turns ON and OFF Automatically When Required

225 Spell Effect Sign Display Circuit

226 Speed Synchronization of Multiple Motors in Industries

227 Speed Checker to Detect Rash Driving on Highways

228 Sound Operated Switch

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229 Sound Operated LED

230 Sound Generation using 555

231 Sound generation in audio range

232 Solar Powered LED Street Light with Auto Intensity Control

233 Solar Powered Auto irrigation System

234 Solar Power Charge Controller

235 Solar mobile phone charger circuit

236 Solar Energy Measurement System

237 Smooth Start of a Single Phase Induction Motor

238 Sleep Sensing and Alerting System for Drivers

239 Single Wheeled Self Balancing Bot

240 Single switch motor on/off.. Clockwise/anticlockwise

241 Sine Pulse Width Modulation (SPWM)

242 Simple AC to DC converter using bridge rectifier

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243 Short Range Ultrasonic Radar With Distance Measuring Capabilities

244 Shadow Counter Solar Powered Long Range Communication System using Microwave Devices

245 Shadow Alarm using LDR

246 Self Switching Power Supply

247 Seismic sensor

248 Security System With User Changeable Password

249 Security System Using Smartcard Technology

250 Security Alarm for Doors, Almirah, cupboards using Opam

251 Secure room access system

252 Secret Code Enabled Secure Communication Using RF Technology

253 SCADA (Supervisory Control & Data Acquisition) for Remote Industrial Plant

254 Safety Alarm Circuit

255 RFID security access control system

256 RFID Based Passport Details

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257 RFID Based Paid Car Parking

258 RFID Based Door Access Control

259 RFID Based Device Control and Authentication Using PIC Microcontroller

260 RF Electrically Directional Antenna Based Tracking System

261 RF Controlled Robotic Vehicle With Laser Beam Arrangement

262 RF Controlled Hovercraft

263 RF based Wireless Remote Control

264 RF based Intruder Alarm

265 RF Based Home Automation System

266 RF based Fire Alarm (Overheat Alarm)

267 Remote Tester Circuit

268 Remote Controlled Toy Car

269 Remote Control For Home Appliances

270 Reminder Alarm

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271 Relay operation using Darlington Pair

272 Relay control through mic

273 Relay control by sound

274 Relay activation using TSOP 1738

275 Refrigerator Door Alarm

276 Raspberry Based Home Automation

277 Random Number Generator Using 7 Segment Display

278 Railway Track Security System

279 Railway Level Crossing Gate Control through SMS by the Station Master or the Driver

280 Quadracopter with Video transmission Ability

281 Quadracopter with Six Degrees of Freedom and Obstacle Avoidance Built in

282 Pulse Counter Fed with Infrared Pulses

283 Programmable Switching Control for Industrial Automation in Repetitive Nature of Work

284 Programmable Load Shedding Time Management for Utility Department

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285 Programmable Energy Meter for Electrical Load Survey

286 Programmable AC Power Control

287 Pre-programmed Digital Scrolling Message System

288 Predefined Speed Control of BLDC Motor

289 Precision Current Source With Keypad interface to Select the current

290 Precise Illumination Control of Lamp

291 Precise Digital Temperature Control

292 Pre Stampede Monitoring and Alarm System

293 Pre Set Off Timer

294 Power failure alarm

295 Post Encryption Data Scrambling For Maximum Data Security random order

296 Portable Programmable Medication Reminder

297 Porch Light (Auto Turn Off Light) Circuit Diagram

298 Pocket CRO using Android

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299 Pin-Pong Ball Board for Eye Catching Marketing

300 Piezo sensor as output

301 Piezo sensor as input

302 Pick N Place with Soft Catching Gripper

303 Phase Sequence Checker for Three Phase Supply

304 Phase Preserving Image Denoising for Maximum Noise Removal

305 Periodically Turning On & Off Mosquito Repellent Circuit Diagram

306 PC Temperature Controller

307 PC Controlled Scrolling Message Display for Notice Board

308 PC Based Wireless Appliance Control

309 PC Based Electrical Load Control

310 Password Based Circuit Breaker

311 Parked Vehicle Indicator

312 Parallel Telephone Lines with Security System

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313 Parallel Port Based Home Automation on Linux

314 Panic Sensing and Spontaneous Stabilization System for Cars to avoid Accidents

315 Overheat/Overcooling circuit breaker

316 Over Voltage or Under Voltage Tripping Mechanism

317 Optimum Energy Management System

318 Opamp as comparator

319 Obstacle Avoidance Robotic Vehicle

320 Object Detection by Ultrasonic Means

321 Object Counter with 7 Segment Display

322 Number Guessing Game

323 Notepad Lamp

324 Non inverting amplifier

325 Night Lamp with Timer for Stairs

326 Networking of Multiple Microcontrollers

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327 Negative supply using 555 IC

328 NE 555 Timer based Automatic Headlight

329 Music (Data) transfer by IR

330 Multi-Utility Flashing Light

331 Multitone Generator Circuit

332 Multipurpose Timer With Musical Alarm

333 Multimeter Using Android Smartphone

334 Multi Color Lighting

335 Movement Sensed Automatic Door Opening System

336 Motion Detector

337 Mobile Phone Sniffer With Over 10 Meter Range Using An Ultrasonic Device as Antenna

338 Minimizing Penalty in Industrial Power Consumption by Engaging APFC Unit

339 Miniature Photonic Rat Bot

340 Miniature Disguised Location Transmitter for Military Spying

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341 Military Grade Video based Steganography

342 Microscope Using A Smartphone

343 Metal Detector Robotic Vehicle

344 MATLAB based Landscape Surveillance System

345 Magic Eye using 555 Timer IC

346 Magic Eye Circuit Using 4049 IC

347 Low pass filter

348 Low Cost Touch Screen For Instant Drawing And Presentations

349 Long range IR

350 Long Range FM Transmitter with Audio Modulation

351 Location Mapping Ariel Vehicle

352 Location Mapping and Routing System for the Blind With GPS Support

353 Location Broadcaster Using Arduino Ethernet Interface

354 Liquid level Alarm

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355 Lighting Controller Counts How Many People are in a Room

356 Light sensor using photodiode

357 Light detector

358 Light dependent frequency variation using LDR

359 Life Cycle Testing of Electrical Loads by Down Counter

360 LED Lamp Using CA3140 IC

361 LED Based Pendulum Circuit

362 LDR Based Automatic Lamp

363 Lamp Life Extender by ZVS (Zero Voltage Switching)

364 IR Obstacle Detection to Actuate Load

365 IR Controlled Robotic Vehicle

366 Invisible Image Watermarking in Python

367 Inverting amplifier with signal feedback

368 Inverting amplifier using 741

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369 Interfacing 4026 with 7 segment display

370 Intelligent Bot Network for Area Monitoring and reporting

371 Integrated Energy Management System Based on GSM Protocol with Acknowledge

372 Infrared (IR) sensor

373 Industrial Temperature Controller

374 Industrial Power Control by Integral Cycle Switching without Generating Harmonics

375 Industrial Battery Charger by Thyristor Firing Angle Control

376 Induction Motor Protection System

377 Incoming Phone Ring Light Flasher

378 Image Watermarking Using Python

379 IC555 based Multicolor LED Lamp Circuit Diagram

380 IC 555 Based Message Display Circuit

381 Humidity Detector Circuit

382 Home Automation Using Digital Control

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383 Hit the Target Game

384 High Voltage DC Upto 2kv from AC by Using Diode and Capacitors in Voltage Multiplier Circuit

385 High Voltage DC by Marx Generator Principles

386 Hidden Active Cell Phone Detector

387 H-bridge using transistor

388 Hardware Level Bit tracing and Data Interpolating Forensic System

389 Hardware Authentication Dongle with Fingerprint Recognition

390 GSM Based Monthly Energy Meter Billing via SMS

391 GSM Based Energy Meter Reading with Load Control

392 GPS enabled Quadracopter

393 Gesture Operated Wheel Chair

394 Generating time delay with 555 IC

395 Full range centigrade temperature sensor

396 Frequency Counter Using Smartphone

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397 Four Quadrant DC Motor Speed Control with Microcontroller

398 Four Quadrant DC Motor Control without Microcontroller

399 Flip Flop based Staircase Switch

400 Flash Memory with Self Destroy Master Lock

401 Flash Flood Intimation Over GSM Network

402 Fixed voltage power supply

403 Fire Powered Mini Portable Power Supply

404 Fire Fighting Robotic Vehicle

405 Finger Print Based Security System

406 Fastest Finger Press Quiz Buzzer

407 FACTs by SVC (flexible ac transmission)

408 FACTs (flexible ac transmission) by TSR

409 Facebook Connected Arduino And Intelligent Event Reporting

410 Fabrics That Generate Energy using Dye Based Solar Cells

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411 Electronic Timer Circuit

412 Electronic Thermometer for Beverage Temperature Measurement

413 Electronic Soft Start for 3 Phase Induction Motor

414 Electronic Number Game

415 Electronic Notepad

416 Electronic Nose to Indicate gas Leakage in Underground Mines and Industries

417 Electronic Eye Controlled Security System

418 Electronic Dog to Sense The Proximity of a Specific Purpose

419 Electronic Code Locking System

420 Electronic alarm for cash box, lockers

421 Electromagnetic Climbing Robots for Industries

422 Easy to Use Automatic Light Controller to Turn ON Lights In Dark

423 Dual converter Using Thyristors

424 DTMF Decoder

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425 DTMF Based Load Control System

426 DTMF Based Car Lock System

427 DNA Based Mathematical Calculator

428 Distance Measurement by Ultrasonic Sensor

429 Display System used in Restaurant

430 Display of Dialed Telephone Numbers on Seven Segment Displays

431 Dish Positioning Control by IR Remote

432 Discotheque Light Stroboscopic Flasher

433 Differential amplifier

434 Detecting Power Grid Synchronization Failure on Sensing Frequency or Voltage Beyond Acceptable Range

435 Darkness Detector Alarm

436 Cyclo Converter Using Thyristors

437 Continuous Speech to Text Conversion for Indian Languages

438 Continuous Speech Processing Using Python

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439 Contactless Liquid Level Controller

440 Comprehensive Threat Detection for Offices

441 Combinatorial Digital Circuit Logic Determining Device

442 Color distinguished using LDR/Color sensor using LDR

443 Coin Toss/Flip Simulator Circuit

444 Closed Loop Control for a Brushless DC Motor to Run at the Exactly Entered Speed

445 Clock with LED pendulum with tick tock sound

446 Cell Phone Operated Land Rover

447 Cell Phone Based DTMF Controlled Garage Door Opening System

448 CD4049 Based LED torch

449 CD4001 IC based Lighting System

450 CD 4060IC based Message Display Circuit

451 CD 4060 Based Security Alarm

452 CD 4027 Based Emergency Lighting System

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453 CD 4013 Based Two Way Switch

454 CD 4013 based Sound Sensing Module

455 Car Reverse Horn

456 Camouflaged Voice Recording and Transmitting System

457 Burglar alarm based Home Security System

458 Bluetooth Controlled Robot

459 BLDC Motor Speed Control with RPM Display

460 bidirectional Rotation of an Induction Motor with a Remote Control Device

461 Beacon Flasher Using Microcontroller

462 Bathroom Light Off Timer

463 Background Interpolation for Selective Image Cancellation

464 AVR based Heart Rate Monitoring System With Health level Indicator

465 Automatic Wireless Health Monitoring System in Hospitals for Patients

466 Automatic Wash Basin Tap Controller

SNO Electronics Projects

467 Automatic Vehicle Image Capturing When Overriding traffic lights

468 Automatic Threshold Detection System for Phase Preserving Image Denoising

469 Automatic Surveillance Camera Panning System from PC

470 Automatic Star Delta Starter Using Relays and Adjustable Electronic Timer for Induction Motor

471 Automatic Speed Regulation Depending On Incoming Vehicle On High Ways (Fuel Injection)

472 Automatic Solar Tracker

473 Automatic solar street light controller

474 Automatic Road Level Detection And Alerting System for Cars

475 Automatic Power OFF timer for CD player

476 Automatic light/dark indicator

477 Automatic Light Lamp with Morning Alarm

478 Automatic Light Beam Shifting Of Vehicles On High Ways

479 Automatic Heat Detector

480 Automatic Fan Speed Regulator

SNO Electronics Projects

481 Automatic Exhaust Fan Control Coupled To Gas Leak Detection

482 Automatic Elevator Light and Fan Controller

483 Automatic Dialing to Any Telephone Using I2C Protocol on Detecting Burglary

484 Automated Vehicle Identification and Toll-Pass System.

485 Automated Traffic Signal Controller

486 Automated Car Parking System

487 Auto turn off battery charger

488 Auto Selection of Any Available Phase, in 3 Phase Supply System

489 Auto Power Supply Control from 4 Different Sources: Solar, Mains, Generator & Inverter to Ensure No Break Power

490 Auto Metro Train to Shuttle Between Stations

491 Auto charging grinding machine with solar power

492 Auto Braking System For Cars Detecting Momentum and Road Irregularities

493 Audio Amplifier using Opamp

494 ATmega644 JTAG Debugger

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495 Ariel Red Herrings to Mislead Missile Tracking Systems

496 Arduino Ethernet Interface for Industrial Automation

497 Arduino Based World Intelligent Event Detection and Alert System with Network Interface

498 Arduino based Waveform Generator For Electronics Laboratory

499 Arduino Based Swarm Bots

500 Arduino Based Online Database Interfacing

501 Arduino Based Earthquake Detection Social Network Broadcast system

502 Anti Theft Alarm for Bikes

503 Android Controlled Wheel Chair for the Physically Handicapped

504 Android Based Waveform Generator

505 Android Based Waveform Analyser

506 Amplifier for Musical ICs

507 AES256 bit Highly Encrypted Image Steganography

508 AES128 Encrypted hardware Lock Using AVR ATMEGA-16

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509 Active high trigger for 555 in monostable mode

510 Accident Detection and Avoidance System Using Doppler Radar Interfaced with ATMEGA16

511 A Swarm of Mutually Interacting Metal Detecting Robots For Scanning the Area

512 A Multiple Bots Operated with a Single Base Station

513 90 Second Timer

514 555 Timer As Amplifier

515 4 Player Quiz Buzzer

516 3D Notice Board using LED Cube

517 2 to 4 Amp arduino Based Motor Shield