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A project, as defined in the field of project management, consists of a temporary endeavour undertaken to create a product or service.[1] More generically, the Oxford English Dictionary suggests that business and science projects involve "a collaborative enterprise, frequently involving research or design, that is carefully planned to achieve a particular aim".

We are here providing you an idea about
1. Projects,
2. Thesis
3. Research.

There are basically two types of projects.

1. Minor Projects
2. Major Projects

I Minor Projects
1. 8 – BIT CODE LOCK FOR APPLIANCES: This electronic lock is useful in numerous applications where access to an article/gadget is restricted to limited number of persons. One unique feature of this circuit is that code can be easily changed here without any need of changing the wiring or connections, as is the case with other electronic locks. The circuit provides re-programming of the code just by changing the switch positions. Number of ICs used: 2
2. ALARM USING YOUR OWN VOICE: Instead of listening to the usual monotonous alarm clock sound while waking up, listening to your own recorded voice or melodious tune of your choice is a good alternative. The circuit enables one to record voice message of up to six-second. The pre-recorded message is automatically repeated at pre-set time of alarm clock. Any readily available alarm clock can be used. Number of ICs used: 3.
3. ANTI-BAG-SNATCHING ALARM: Incidents of bag snatching are increasing nowadays. Many a times the snatcher can be caught easily if a loud alarm is raised. The kit uses plug and socket arrangement to raise the alarm whenever any snatching attempt is made. Thus, while traveling, this kit entitles the person to carry cash or valuables without fear. Using the hidden key, only owner can turn OFF the alarm. Number of ICs used: 3
4. ANTI-THEFT ALARM FOR VEHICLES: Security system for vehicles which generates a loud and continuous alarm in case of any unauthorized person getting access of your vehicle. As soon as, auto-lifter tries to start the vehicle alarm gets activated leaving no option for him other than to leave the vehicle intact and run away. Only owner will be able to turn OFF and reset the alarm. Number of ICs used: 1.
5. AUTOMATIC NIGHT LAMP WITH MORNING ALARM: This circuit serves dual purpose, depending upon intensity of light rays detected. One part of the circuit automatically detects darkness to switch ‘ON’ a white bright LED which acts as night lamp. Its another part senses daylight to switch on a melodious music in the morning. No external DC power supply is required, as the circuit operates on direct AC power supply line. But, provision for battery backup is provided to power the circuit in case of mains failure. Number of ICs used: 3
6. AUTOMATIC PORCH LIGHT WITH MELODY: While you park your vehicle in the garage, this porch light automatically switches on for a specific duration. A melodious sound can also be heard at the same time. Time duration can be easily varied using a preset. Number of ICs used: 2.
7. AUTOMATIC SCHOOL BELL: To ring this school bell to start the first period, peon needs to momentarily press switch S1. Thereafter the bell sounds every 45 minutes to indicate the end of consecutive periods, except immediately after fourth period, when it sounds after 30 minutes to indicate that the lunch break is over. When the last period is over, LED2 glows to indicate that the bell circuit should now be switched off manually. This bell can be used for total of eight periods. Number of ICs used: 4
8. BICOLOUR LED DISCO RUNNING LIGHT: To display a running lights effect, the circuit uses Bi-color LEDs which include both red and green LEDs. These LEDs are turned ON and OFF sequentially producing a disco light effect. The speed of running lights can be set easily. A moderate speed is preferred as it gives the best effect. Number of ICs used: 2.
9. BLOWN FUSE INDICATOR: The excessive flow of undue current or a short circuit usually results in blown fuse. A number of equipment nowadays comes with their internal fuses. The kit gives proper indication whenever a fuse gets blown. Green LED glows in normal condition. A blown fuse is indicated by red LED and audio alarm. Number of ICs used: 1.
10. BURGLAR ALARM: This circuit automatically activates a loud alarm whenever any unauthorized entry is attempted. As any intruder or burglar tries to get inside a restricted area, a wire loop breaks to instantly turn ON the alarm to generate a loud and continuous sound. Number of ICs used: None.
11. CHIP CHAP HOBBY KIT FOR OVER 100 DO-IT-YOURSELF EDUCATIONAL EXPERIMENTS: Learn the basics of electronics by practical examples and also assemble small but useful circuits. This hobby kit provides beginners with hands-on experience of doing the connections in an easy way. The manual provides detailed description regarding connections and working of circuits.
12. CLAP BASED SWITCHING FOR DEVICES: Switch ON the lights, fans, and motors sequentially just by clapping in the vicinity of the microphone used in the circuit. First clap switches ON first LED and subsequent claps ensure shifting of output to next level with automatic Reset on fourth clap. At the maximum ON/OFF switching operation of four appliances is possible but the sequence can be altered easily in desired fashion. Number of ICs used: 6.
13. CONDENSER MIC AMPLIFIER: MIC sound amplification with both fixed and variable outputs can be obtained using this kit. The two-stage amplifier is capable of providing sufficient gain to pick up even the slightest whisper. Number of ICs used: None.
14. CORDLESS FM MIC (with cabinet): The voice over condenser microphone (included in the kit) can be listened through a standard FM receiver using this circuit. The range of this FM transmitter can be easily enhanced with little modifications. Number of ICs used: None.
15. DIGITAL DICE: The digital electronic dice circuit acts like a normal dice and uses four different logic gate combination to bring out the six faces of the dice. Seven LEDs are suitably positioned on the board. When you place your finger on the touch plate, The LEDs will glow. The number of glowing LEDs corresponds to the number of the number of spots on the dice. No. of ICs used: 3.
16. DIGITAL SECUIRITY SYSTEM: You can use this simple and reliable secruity system as a watch dog by installing the sensing loops aruond your building. No. of ICs used: 2.
17. 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. It displays the output using LEDs. Number of ICs used: 3.
18. ELECTRONIC AUTO DIPPER: While driving at night, the high beam of head light lamp of vehicle approaching from opposite direction causes the problem of glare for both the drivers. This circuit solves the problem by making the dipper action automatic. As soon as it senses the light rays coming from opposite direction it automatically turns lamps from High to Low intensity. Number of ICs used: None.
19. ELECTRONIC GUARD FOR BLIND: Using this Infrared based aid for visually impaired persons, any obstruction in the path can be sensed easily. When obstruction is too near, the loudness level of sound coming through earphone gets increased. Thus the user holding the unit gets a rough idea of his distance from the object. The important feature of the circuit is its small size owing to use of less number of components. After little modifications, the same circuit can be used in robotic toys or in object counters. Number of ICs used: 1
20. ELECTRONIC WATCH DOG: Here’s an electronic watchdog for your house that sounds to inform that somebody is at gate. The circuit comprises a transmitter and receiver, which are mounted face to face on the opposite pillars of the gate. The alarm sounds for 30 seconds, when somebody enters through the door. Number of ICs used: 3
21. EMERGENCY LIGHT USING CFL (except cabinet, connector, and tubelight): The kit provides automatic switch-on of compact fluorescent lamp (CFL) in the case of AC mains supply failure. Charging mode is automatically turned ON when the supply is resumed. Number of ICs used: None.
22. FASTEST FINGER FIRST: Useful in quiz and game shows, this device indicates the fastest player’s designation number along with alarm sound. The switches of other contestants get locked instantly. Number of ICs used: 7.
23. FIRE ALARM: This fire detector circuit generates a loud and continuous alarm in case of fire. Here, a simple diode is used as fire sensor, the reverse resistance of which decreases with increasing temperature. The circuit triggers the alarm when temperature reaches above 70ºC level. This level can be easily adjusted to suit the needs. Number of ICs used: 1.
24. HEARING AID: This low-cost, electronic hearing aid employs a TDA 2822M (8 PIN-DIP package) audio amplifier IC. Transistor BC547 and associated components form the condenser microphone signal preamplifier. The audio power output of this unit is 10 to 15 MW.
25. HEARTBEAT MONITOR: Listen to your heartbeats with this simple, easy-to-configure circuit. It uses a piezoelectric plate as the sensing device and the loudspeaker reproduces heartbeat noted as audible sound. Number of ICs used: None.
26. HEAT SENSITIVE SWITCH: This circuit can be used to switch on or off the load at a predetermined temperature. The temperature is set through the output of a temperature sensor IC or heat sensor and a voltage divider network. When the temperature reaches the preset value, the circuit energizes the relay and automatically turns on the load such as fan through the contacts of the relay. No. of ICs used: 3.
27. HIT SWITCH: The circuit of hit switch uses a piezoelectric diaphragm as the hit sensor. This versatile hit switch is electronic equivalent of a conventional switch. It can be used to control the switching of a variety of electronic devices. Number if ICs used: 1
28. INEXPENSIVE CAR PROTECTION SYSTEM: Here is a circuit to protect your car stereo, etc. from pilferage that costs less and requires no adjustments in the car but a good car cover. No. of ICs used: 3.
29. INFRA-RED OBJECT COUNTER: This circuit can be installed in public places to count the number of people or objects passing through the transmitter & receiver. The circuit operate at a frequency of 38 Khz . The count will be displayed through the calculators. Number of IC used: 3.
30. INFRA-RED TOY CAR MOTOR CONTROLLER: This circuit enables the controlling (On/off remote switching) of a battery operated toy car with the help of a TV/Video remote control operating at 30-40 Khz. The motor can be switched on by pressing any of the keys of remote control and switched off in the same manner:- No of IC used: 2.
31. INTELLIGENT ELECTRONIC LOCK: Built using transistors only, this intelligent lock responds only to the correct sequence of tactile switches, which must be pressed within stipulated time. Any kind of unauthorized trial is prevented with disabling of lock for specific time duration. Number of ICs used: None.
32. INTRUDER ALARM: This circuit automatically activates a loud alarm whenever any unauthorized entry is attempted. To reset the circuit, there is no need to replace the broken wire or to turn OFF the unit, as is the case with other security alarms. The alarm can be turned OFF just by a simple flick of a switch. The unit power on indication by LED is also provided here for better monitoring. Number of ICs used: 2
33. INVERTER OVERLOADS PROTECTOR WITH AUTO DELAYED RESET: Overload can damage an inverter. This kit acts as a protector-cum-indicator and also resets the inverter after specific time delay. In the case of three successive overload conditions, it automatically shuts down the inverter. Number of ICs used: 5.
34. IR REMOTE CONTROL WITH TIMER: The circuit uses IR transmission for remotely controlling ON/OFF operation of up to two electrical/electronics appliances. Pressing push-to-on switch from a distant transmitter, normally OFF appliance is turned ON and another normally OFF appliance is turned ON for some specific time period. This time period can be varied in the range of 0.11 to 110 seconds for given set of components and range of remote is about 3 meters. Number of ICs used: 3.
35. IR REMOTE SWITCH: ON/OFF switching operation of a remote appliance can be done using this remote control. The circuit uses any TV, VCR, VCD or CD player remote as transmitter. Indication of different output stages is provided by LEDs. This helps in better understanding and easy troubleshootiong. The approximate range of the circuit is about 10 meters. Number of ICs used: 3
36. KNOCK ALARM: This circuit converts knock on door, car’s dashboard, drawer, etc into a loud alarm using a loudspeaker. If installed at your doorstep, it can be used to warn you of any unauthorized entry during nighttime. Number of ICs used: 1.
37. LONG RANGE BURGLAR ALARM USING LASER TORCH: These Circuits operates at a frequency of 5 khz. If the transmitter & receiver parts are properly aligned it can work up to a distance of even 30 meters when the object cuts the transmitter and the receiver parts. No. of IC used: 1
38. LONG-RANGE FM TRANSMITTER: The high-power output obtained using a power amplifier stage allows a range of about 2 km for this FM transmitter. Reasonable good signal quality and strength are possible with little adjustments. Number of ICs used: None.
39. LOW-COST TRANSISTORISED INTERCOM: Voice at one end is amplified and listened at the other end through a loudspeaker as a one-way intercom. A two-way intercom can be similarly assembled using two such kits. Number of ICs used: None.
40. LUGGAGE SECURITY SYSTEM: The circuit sounds an alarm when somebody tries to cut the luggage chain. Different sound effects like police siren, fire alarm, ambulance siren etc are possible after doing simple connections. Number of ICs used: 1.
41. MAGIC EYE: This magic eye fitted on the bottom of door entrance obviates the need for a call bell. It can also be used as an automatic guest indicator at homes or as a burglar alarm in banks. Number of ICs used: 1.
42. MATCHBOX-SIZE RADIO (with cabinet): Making one’s own radio and listening to it has always been a pleasant experience for all kinds of electronic hobbyists. This Medium Wave (MW) Radio Receiver is so compact that it can be fitted easily inside a matchbox. An earphone is also provided. Number of ICs used: None.
43. MOBILE PHONE BATTERY CHARGER: Charge your mobile’s battery (of 7.2V rating) from mains supply or even external DC supply such as a vehicle’s battery. LEDs indicate power-on, external DC, and charging status. Number of ICs used: 1.
44. MOSFET BASED PREAMPLIFIER FOR FM RADIO DXing: Frequency Modulated (FM) transmission can be received within a range of about 40 Kms. To receive your favourite FM radio station beyond this range, the only option left is to connect an external pre-amplifier at the receiver end. This circuit acts as FM booster attached to your present FM radio receiver and enables one to receive FM in fringe areas. Number of ICs used: None
45. MULTI MELODY GENERATOR WITH INSTRUMENTAL EFFECT: This versatile melody generator is capable of generating various English and Hindi version melodies using UM3481A and WR630173 tone generator respectively. Instrumental effects can also be produced with the same circuit. The advantage of this circuit lies in its ability to select various modes of melodies through DIP switches, instrumental effect, high volume and volume control provided in the circuit.
46. MULTISWITCH DOORBELL WITH INDICATORS: In a home with too many doors it become difficult to ascertain as at which door a visitor is standing just by listening to doorbell. Using a monitoring panel with indicators to indicate the door number this circuit is capable of solving this particular problem. In addition to that, buzzer also is activated each time any switch is pressed. With up to four switches available, circuit is able of monitoring four different doors. Number of ICs used: 2.
47. MULTITESTER WITH AUDIO-VIDEO INDICATOR: Test the condition of electronic components like resistors, capacitors, diodes, photodiodes, and transistors by both visual and audio indication. The tester is also useful for checking continuity between two points. Number of ICs used: None.
48. MUSICAL ‘TOUCH’ BELL: This musical bell operates just by the touch of your fingertip, obviating the need for a mechanical switch. Useful in homes and offices, it can operate off a single pencil cell. Number of ICs used: 1.
49. MUSICAL DOOR BELL (with memory): This Doorbell produces a pleasant musical tune. The bell rings only for time period that you have set. A single melodious tune is heard whenever a push-to-on switch is pressed. The preset time can be varied easily. Number of ICs used: 1.
50. MUSICAL HOLD-ON FOR TELEPHONE: Using this add-on external circuit attached to your telephone a melodious music is generated on telephone line. During the entire hold-on interval, person on other end enjoys a pleasant music. To resume talking when you are back, just flick the switch to OFF position. A Red LED included in the circuit indicates that phone line is on-hold and it automatically turns OFF when music stops. Number of ICs used: 1.
51. OVER-VOLTAGE PROTECTOR: The fluctuations in high potential mains can cause irrepairable damage to electrical/electronic appliances. The appliances must be turned OFF immediately in case of high voltage conditions. Whenever voltage fluctuates beyond 240V A.C. limit, this kit shunts out mains connection to appliance and turns it OFF. Number of ICs used: 2
52. PARRALLEL TELEPHONE RINGER: Due to high volume of your hi-fi audio/video systems or any other reason sometimes telephone ringing in other room is not heard. In addition to provide indication that your telephone is ringing in other room this telephone extension ringer avoids overhearing of conversation by an undesired person at other end. Number of ICs used: 1.
53. PC BASED TIMER: This circuit interfaced with PC computer through D-25 pin male connector, can switch on and switch off the device for a particular timing required by the user. The program is written in C languages & compiled in Turbo C compiler. The maximum timing of the circuit is for 18 hours. Number of ICs used: 1.
54. POCKET FM RECEIVER (excluding cabinet): The digital like sound quality that FM offers is the reason behind its growing popularity among masses. Integrating all the required operations in a single chip, this circuit provides an easy way to make your own FM radio. To be able to listen to less distorted and low noise FM music, audio amplifier section (using another IC) is included here. Number of ICs used: 2.
55. POWER FAILURE INDICATOR: The power supply failure and blown fuse condition both are indicated by sounding an alarm using a loudspeaker. Number of ICs used: 1.
56. POWER FAILURE/RESUMPTION ALARM: This mains indicator sounds an alarm whenever AC mains fails or resumes. It is very useful in industrial installations, cinema halls, hospitals, schools, collages etc. Number if ICs used: 3
57. POWER SUPPLY FAILURE ALARM: This circuit indicates power supply failure by sounding a buzzer. No external DC supply is required and LED indicates power-on condition. Time duration can be varied with little modifications. Number of ICs used: None.
58. POWERFUL PEST REPELLER: The high-frequency signal generated by a transformer is useful as pest reapeller. The intensity can be easily varied by tuning the preset. Number of ICs used: 2.
59. QUALITY FM TRANSMITTER: The digital like sound quality that FM offers is the reason that many people prefer to have their own transmitting station in FM band. This quality FM transmitter can transmit chosen music in FM band. To receive its signals, any conventional FM radio receivers can be used. Without complicating the functionality, this circuit transmits the signals just by using discrete components. It provides an easy way to transmit less distorted, low noise music with in a range of about 200 meters. Number of ICs used: None.
60. REMOTE CONTROL FOR HOME APPLIANCES: This handy circuit can be used to switch on and off any of your home appliances or any electrical device with a single press of your TV, VCD or DVD remote control. This low-cost circuit is based on 4017 counter IC which receives trigger pulse from IR sensor and switches on the relay through which electrical devices are switched on & on receiving the 2nd pulse the device is switched off. No. of ICs used: 1.
61. REMOTE OPEARTED MUSICAL BELL: It uses any TV remote control to operate a 12-tone musical bell. This Infra-Red (IR) receiver unit is capable of responding to IR rays transmitted from any TV, VCR, VCD or CD player remote. When any of the buttons on the remote is pressed, the receiver detects it as pulse through its own IR sensor and plays one musical tone. The approximate range of the circuit is 10 meters. Number of ICs used: 2
62. SCHOOL/COLLEGE QUIZ BUZZER: The quiz buzzer given here can be used for up to eight players, which is max. in any quiz compition. No. of ICs used: 1
63. SENSITIVE VIBRATION DETECTOR : The Vibration detector (piezo element) in this circuit can be used to detect the vibration of the rolling shutter guard and alarm you when unauthorized person tries to open it. The load in the circuit can be an AC operated electric bell or bulb used as alarm device. The alarm can be stopped using a push-to-off switch given in the circuit. No. of ICs used: 1.
64. SIMPLE CODE LOCK: A code lock can be used for numerous applications in which access to an article/gadget is to be restricted to a limited number of persons. The connected appliance is turned ON only when correct four-digit code is entered in correct sequence. Any wrong key pressed will reset the lock. Number of ICs used: 2.
65. SMART CELL HOLDER: This smart cell phone holder makes sure that you don’t forget to carry your mobile phone. Fitted in the car it keep searching for the mobile phone within the holder using infrared rays (IR) and alerts you through a flashing LED when it does not find one. No. of ICs used: 1.
66. SMART FLUID-LEVEL INDICATOR: This smart fluid level indicator provides indication of water levels in simple English alphabets. The display Letter E for Empty, L for Low, H for Half, A for Above average and F for Full are displayed using seven-segment display panel which is easily understood and eliminates any kind of code generation. Number of ICs used: 2.
67. SMOKE ALARM: This smoke detector uses a photo interrupter module that activates an audio alarm via a loudspeaker. The sensitivity can be easily adjusted by varying the preset. Number of ICs used: 1.
68. SOUND SCANNER: This circuit monitors happenings in and around some important place of your home or office where it is installed. When some sort of activities occurs, audible beeps are heard at another distant place. To monitor sit-outs, car porches, locker room etc install kit at appropriate place with beeper kept at another location where indication is desired. Number of ICs used: 2.
69. SOUND-OPERATED TIMER: This is a kind of multi-purpose circuit that can be used in a number of applications. This is operated by the sound of clap. Clapping in front of condenser MIC turns ON connected appliance for a specified time period after which it is automatically turned OFF. It can be used in any application where ON/OFF control through sound is desired, such as sound operated motor driven toy car, garage light, alarm system or any other gadget. Number of ICs used: 1.
70. TELEPHONE CALL RECORDER: This telephone message recorder records all the conversations on tape-recorder. In case nobody attends the call, it records the incoming ring signal only. Number of ICs used: 1.
71. THREE OCTAVE ORGANS: Organ is a musical keyboard instrument that produces a wide range of sounds at different volumes. This circuit resembles the working of organ by electronically producing 12 musical notes. This electronic organ is designed to produce notes in high, medium and low octaves. Selection of different octaves is done by switches S1 and S2. Number of ICs used: 1.
72. TIMER FOR STUDENTS: This timer gives alarm after a preset time period and a few beeps at half the selected time. The timer can be programmed for other time periods as well. Number of ICs used: 2.
73. TOUCH DIMMER: This is versatile three-step touch dimmer for varying the lamp intensity according to brightness required in the room. The circuit increases lamp intensity in steps, from off to low, medium, high and again off. The lamp stages are advanced sequentially by simply touching the touch plate connected to touch wire. At power–on condition, lamp is in OFF condition. Number of ICs used: 1
74. TOUCH SENSITIVE SWITCH: Sometimes one may want to switch a lamp just by touching it. This circuit provides a very simple and reliable way to do just that. The connected appliance will be turned ON by a slight touch of finger at the sensor. Another touch at the OFF sensor will turn it OFF. This can also be used as a hidden switch or electronic lock by concealing the touch sensors. Number of ICs used: None.
75. TWO-DOOR DOORBELL: This doorbell gives two different tones: one of a lower frequency and the other of a much higher frequency. Separate switches can be mounted at two separate doors at the same floor level. Number of ICs used: 2.
76. VARIABLE POWER SUPPLY WITH DIGITAL CONTROL: A regulated power supply is one of the most important and essential requirements in electronic lab. The available power supply must provide variable outputs in steps. This kit gives variable and fluctuation-free DC voltage as output in the range of 1.5V to 12V. It also provides proper display using LEDs as indicators and outputs here are easy to select. Number of ICs used: 4
77. Verstile Power Supply: Using this circuit, you can obtain the following voltages at curretnt limied to one amp.: 3.3V, 5V, 6V, 9V, 12V and 15V. No. of ICs used: 1
78. WATER-LEVEL CONTROLLER: The kit controls ON/OFF switching of pump motor. It starts the motor to pump water from ground-level tank to overhead tank only when the tank is completely empty. To monitor the status, each tank is provided with three probes. Number of ICs used: 2.
79. WATER-LEVEL CONTROLLER CUM MOTOR PROTECTOR: This device provides switching on/off of motor. When overhead tank gets completely filled, motor is automatically switching off. In case low or high-voltage condition prevails, running motor is protected by proper cut-off. Number of ICs used: 1.
80. WATER-LEVEL INDICATOR: This circuit indicates filling of water tank up to the preset water level. The circuit provides visual indication using LED and audible indication by the sound of buzzer. As soon as water reaches the level, buzzer is activated and red LED is turned ON reminding the person to turn the motor OFF and thus avoiding wastage of water. Number of ICs used: None.
81. WIRELESS TV HEADPHONE: As most of TVs nowadays come equipped with audio in/out and video in/out RCA sockets, connect audio output (headphone socket) of your TV to this circuit to transmit the sound of TV as FM signals. Using a portable FM receiver with headphone watch your favorite TV program without disturbing others. Number of ICs used: None.
82. ZENER DIODE TESTER: Many a times the terminal and voltage markings are not specified on zener diode by manufacturer. Or, it may happen that these markings are not visible in old or used components. This kit provides a way to test and check zener diodes of 3.3V to 18V rating. After proper calibration of the circuit, it indicates the breakdown voltage of connected zener using Red LED as indicator. Number of ICs used: None

II Major Projects

1. 3D SURROUNDS SOUND SYSTEM: In this project, we have used the NJM2702D 3D surround audio processor manufactured by New Japan Radio Co., which generates 3-dimenssional surround effect by using just two loudspeakers. The inbuilt special filters and mixers used in the IC render a true-to-life 3D surround sound effect. No. of ICs used: 3
2. A unique level indicator: It displays water level in the tank in ten levels.
3. Digital clock with hourly music: It displays time in digitally format and sound an alarm after every hour.
4. Laser Based Communication Link: It is a one/two way optical communication system using a short wavelength visible Laser Diode as the light emitting element, free space as the transmitting media and a light dependent resistor as the light receiving element. This system is ideal for speech communication between two adjacent offices or between homes on the opposite sides of a road. No. of ICs used: 10
5. LEAD ACID BATTERY CHARGER cum VOLTAGE ANALYSER: Continuous monitoring of battery conditions even for maintenance free lead acid batteries is necessary, because poor state of battery reduces its life, capacity and recharging ability. This circuit indicates the overcharge, low charge, normal and no charge battery conditions using LEDs and buzzer. Circuit is also capable of fully charging a 12V battery within 6-8 hours. Number of ICs used: 1
6. Lift overload protector: It counts no. of persons enters in the lift and sound an alarm if no. of persons greater than lift capacity.
7. LOW COST ENERGY METER (New): As the name suggests "Low cost energy meter" has been constructed with the help of IC ADE 7757. The output units are displayed in the seven segment display. These can measures up to (9,99,999.The circuit is also provided with the proper battery back-up such that even if the power fails the display will not be reset & it goes on. No. of ICs used: 4.
8. MANUAL EPROM PROGRAMMER: These circuits can manually programs you’re EPROM (2716, 2732) with the help of 8 way dip switches. Two 8 way dip switches are provided one for the address of the program and the other for the date of the program. This circuit is quite inexpensive and very useful to program your EPROM by yourself. Number of IC used: 2
9. MICROCONTROLLER (89C2051) BASED AUTOMATIC FLUSH SYSTEM: Here is an automatic flush system (toilet and urinal) that automatically flushes the fixture when the user departs. It employs an AT89C2051 microcontroller and an infrared sensor to detect a user approaching the fixture, then waits until the user departs. It also flushes before the person departs if the person is present for more than the preset time (5 minutes). CD4050 is used as a buffer for the output ports of the microcontroller, TSOP1738 is used as an IR sensor and a solenoid is used to actuate the flush from a 6V power supply with a battery backup inside the unit. No. of ICs used: 3
10. MICROCONTROLLER (AT89C2051) BASED COUNTDOWN TIMER: It is a microcontroller based timer that performs countdown operation for up to 99 minutes with two 7-segment displays showing the actual time left. During the countdown operation, a relay is latched and a flashing LED indicates countdown timing’s progress. A relay driver section is included in the circuit to switch on a relay that can activate any electrical device. Apart from microcontroller, CD4511 and LTS543 are some of the main components used in the circuit. No. of ICs used: 4
11. MICROCONTROLLER (AT89C51) BASED REMOTE-CONTROLLED DIGITAL AUDIO PROCESSOR: This infrared (IR) remote controlled digital audio processor has four stereo input channels and one stereo output. The processors in this system control various functions of each channel and output them to your audio amplifier. No. of ICs used: 7
12. MICROCONTROLLER (AT89C51) BASED STEPPER MOTOR CONTROL: Here is a simple stepper motor controller based on 89C51 microcontroller to control the rotation of a DC stepper motor in clockwise and anticlockwise direction. Number of ICs used: 2
13. MICROCONTROLLER (AT89C52) BASED TEMPERATURE INDICATOR: Here’s a microcontroller-based temperature indicator that displays the temperature in the range of –55C to 125C. Besides AT89C52 microcontroller, it uses a temperature sensor chip and an LCD module. The indicator outputs the calibrated data in digital form. The program for the microcontroller is written in C language. The AT89C52 microcontroller provided in this kit is programmed with “Temp52.C” program and you just need to integrate this programmed chip into the populated PCB. Number of ICs used: 3
14. MICROCONTROLLER (AT8C52) BASED RTC-INTERFACED FOR MULTIPLE DEVICE CONTROL: This project based on Atmel89C52 and Dallas real-time-clock (RTC) chip DS12887 can be used to control and remotely program the switching operation of 24 electrically devices. Devices can be switched ON/OFF repeatedly every day, every month. No. of ICs used: 10
15. MICROCONTROLLER (AT90S4433 AVR) BASED COUNTDOWN Timer: Here is a simple programmable timer based on (AT90S4433-AVR) which can be used in numerous industrial applications. They form part and parcel of all (PLCs) which controls the switching off functions of appliances. This particular timer can be operated under two modes. Two separate software’s are provided. 1) Cyclic on-off functionality 2) Switch on functionality after a preset elapsed time Note: You need 2 separate programmed ICS for two functions. No. of ICs used: 1
16. MICROCONTROLLER (MC68HC705) BASED CALLER-ID with Cabinet: This caller ID unit is built around preprogrammed Motorola MC68HC705 microcontroller. The facility of knowing caller’s telephone number before answering the call is being extended to willing subscribers by MTNL in Delhi and Mumbai and by BSNL in major cities. Number of ICs used: 5.
17. MICROCONTROLLER (MC68HC705) BASED REMOTE AUDIO BOARD: This Micro-Controller based kit is intended to work as an add-on to audio power amplifier. Motorola’s MC68HC705 microcontroller and TDA7315 audio controller provide standard functions such as volume, bass, and treble using remote control. A LED panel gives status indication. Number of ICs used: 6.
18. MICROCONTROLLER (MC68HC705J1A) BASED SCHOOL TIMER: This versatile programmable school timer can be used to display real time clock as well as school bell timings on four 7-segment LED displays. It can store about 20 bell timings and activates the bell through a relay at every predetermined period. The main components of this circuit include MC68HC705J1A microcontroller, CD4532 priority encoder, 74LS138 decoder and 74LS47 display driver. No. of ICs used: 4
19. Microcontroller Based Industrial Timer: Here is a simple industrial timer based on 40-pin Atmel AT89S52 microcontroller that performs count-down operation up to 9999 minutes/second with four 7-segment displays showing the actual time left. The relay energies as you press the start switch and remains on till the countdown reaches ‘0000.’ Four tactile, 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).
20. MICROPROCESSOR (8085) BASED ELECTRONIC VOTING MACHINE: Features of it is avoidance of invalid votes and reduction of counting time. Capability to handle 48 candidates. The max. no. of votes that can be registered against any one candidate should 9999. No of ICs used 8.
21. PC Based (PIC 18F2550 C) Two-Channel Oscilloscope: Presented here is an oscilloscope using USB port of the PC that operates at up to 10 kHz with ±16V input voltage. The oscilloscope uses IC PIC18F2550 microcontroller chip from Microchip as the main controller, which makes the oscilloscope compact as there is no need of additional power supply for the entire circuit board. This controller chip along with MCP6S91, LF353 and L7660 ICs are used in the project. The project can be run in a PC with Windows 98SE operating system. No. of ICs used: 6
22. Pc based Control 7-segment display: It can display any four digit no. on four segment displays. The no. can be type from keyboard of pc.
23. Pc based multiple device control: It can on/off 255 devices from the keyboard of pc.
24. PC Based Prog. For 89C51 μC, with sample proj. of monitoring Sys.: This kit contains all the necessary items to build a programmer for AT89C51 micro-controller along with one sample project. The programmer directly interfaces with PC parallel port. Included CD contains assembler, programmer software and 89C51 details. The sample project of monitoring system can be used for promptly calling room service or assisting staff in establishment like hotels, small offices, clinics etc. It provides audio-visual identification of calling point. This kit thus acts as an easy interactive tool to start working on microcontrollers. Number of ICs used: 6
25. PC Based Prog. For PIC16X8X μC, with smpl. proj. of melody gen.: This kit contains all the necessary items to build a programmer for PIC16X8X series of micro-controllers. PIC16F83, PIC16C84, PIC16F84 and PIC16F84A are some of the many micro-controller ICs from Microchip technology Inc. For demo purpose, one sample project “PIC16F84 Based Melody Generator” is also included here. The programmer and sample project details are explained separately. The programmer software, assembler and general details pertaining to PIC are included in CD. Number of ICs used: 4
26. PORTABLE OZONE GENERATOR: This handy unit to be plugged into mains to get ozonated air at suitable pressure, flowing out from the tube. Ozone gas is now-a-days used for treatment of drinking water, dis-infection and air purification. Number of ICs used: 2.
27. Remote controlled real time clock with device controller: This circuit is based on ATMEGA16 microcontroller and DS1307 real time clock chip. A 16x2 LCD display is used for user interface to display time, date and various settings. A real time clock chip is set to control five different alarm settings. These settings can also be used to switch on/off eight external devices. This project uses a TV remote control with RC5 format.
28. REMOTE-CONTROLLED LAND ROVER-A ROBOTIC PROJECT: A Land rover vehicle, which can be remotely instructed to perform the functions though momentary depression of appropriate push switch on remote like as Move in forward direction, Move in reverse direction, Turned to left Turned to right, Stopped at any time. Provision is also made for its automatic stop on encountering a physical obstruction while moving in forward and reverse directions. No. of ICs used: 6
29. SPEED CHECKER FOR HIGHWAYS: This speed checker provides a digital display in accordance with vehicle’s speed but also sound an alarm if the vehicle exceeds the permissible speed for the highways. No. of ICs used: 11
30. TELEREMOTE CONTROL: This tele remote overcomes the range barrier of infrared remotes. Control is provided through the dial keypad of a remote telephone and switching on/off operation of up to ten appliances is possible. (This circuit is meant to control only four devices.) Number of ICs used: 8.
31. TRAFIIC LIGHT AND STREET LIGHT CONTROLLER: It can control the timings of four sides of traffic lights separately. It can also control the changeover from continuous traffic light mode (at night) to blinking yellow light, and from blinking yellow light to traffic light mode (during day). In addition it also controls the automatic switching ON/OFF of the streetlights. No. of ICs used: 17.
32. VOICE RECORDING AND PLAYBACK USING APR9600 CHIP: By this kit we can record or playback voice up to 32 to 60 seconds. It can record and play multiple messages at random or in sequential mode. Microphone amplifier, automatic gain control circuits, internal anti-aliasing filter, integrated output amplifier and messages management are some of the features of the APR9600 chip, used in this kit. Number of ICs used: 2
33. Water level controller cum motor protector: This circuit uses an AT89C51 microcontroller as the main controller. It can be used to switch ON and OFF the motor depending upon the level of the water in the tank. The status is displayed on an LCD module. The circuit also protects the motor from high voltages, fluctuations of mains supply and dry running.

To purchase any of the above mentioned projects, contact the following person.
Mr. Madhu Sudan
sk electronics
#227, St. No. 2,
Rasilla Nagar,
Jamalpur,
Ludhiana. - 141010. (Punjab).
Mb. 098157-42497
email ID- ske786@gmail.com