SEES Mini Projects

NO	NAME OF THE PROJECT
1	4 DIGIT PRESET COUNTER
	Counts the object with the help of proximity switch input. The setting can be done with the help of thumbwheels. Trips the relay as soon as down counting reaches zero.
2	99 SECOND PRESET TIMER
	Any time between 0-99 seconds can be set with the help of thumbwheels. Relay will operate as soon as preset time is over. 2 digit display counts down to 00 from preset value.
3	DIGITAL ON/OFF TIMER
	2 digit on/off timer can set on and off time separately with the help of thumbwheels. 2 digit display indicates the on/off time separately by down counting.
4	DIGITAL RPM INDICATOR
	4 digit indicator indicates actual speed of the motor or rotating object in rpm with the help of proximity switch input.
5	DIGITAL FREQUENCY INDICATOR
	Frequency of square /sine wave up to 1 KHz is indicated on 4 digit display.
6	DIGITAL TEMPERATURE INDICATOR
	Using thermocouple as temperature sensor the unit shows 0-400oC on 3 ½ digit indicator .
7	STOP WATCH
	This is a digital 99 second stop watch. Pressing START P.B will start crystal control precision clock. IT can be stop STOP P.B.useful in sports events athletics, process control.
8	LIGHT ACTIVATED SWITCH
	This low cost circuit without relay and transformer uses diac and triac to switch on the AC lamp up to 100 watt. LDR is used to sense the light intensity.
9	DIGITAL UNDER /OVER VOLTAGE MONITOR
	Indicator shows actual voltage reading. As soon as voltage goes below or above set voltage the unit will trip the system. The upper and lower limit can be set by presets.
10	DIGITAL VOLTMETER
	3 ½ digit panel meter using 7107 IC indicates AC/DC voltage from 200 mV to 200V in 4 ranges.
11	DIGITAL CAPACITANCE METER
	The two digit capacitance meter measures the capacitance of ceramic, polyester, electrolytic, tantalum capacitors from Pico farad up to 100 microfarad.
12	BATTERY DRAIN INDICATOR
	This tiny 10 LED bar display indicates the status of the battery in graphical form. Three different color LEDs show low(drain),normal, and high(over charge) voltage zone of the battery.
13	UNDER SPEED SWITCH
	If the speed of the motor or moving object reduces due to single phasing or over load the unit detects the under speed and trips the system.
14	MISSING PULSE DETECTOR
	If number of pulses per minute decreases the set value (preset by thumbwheel) the unit will actuate the relay.
15	SEQUENCIAL TIMER
	Switches on and off 9 different loads sequentially with preset time.
16	WATER LEVEL CONTROLLER
	Switches on the pump as soon as the water level in the upper tank goes below the lower level probe and switches off when water level reaches upper level. Also prevents motor from dry running by monitoring lower tank water level.
17	SINGLE PHASE PREVENTOR
	Stop 3 phase motor as soon as one phase out of 3 goes off thus preventing the motor from burning.
18	METAL DETECTOR
	Locates metal object buried under ground ,embedded in the walls or hidden in the cloths .
19	SECRET CODE LOCK
	By entering 3 digits secret codes you can switch on /off solenoid to open close the door or safe or locker.
20	ANTI THEFT SWITCH
	Useful for preventing robbery as any body tries to open shutter, door, and window forcefully, the switch will be activated and sounds the siren.
21	SECURITY ALART SYSTEM
	Keeps the watchman at night all the time on the duty.
22	ELECTRONIC THERMOMETAR
	Instrument that indicate the temperature in form of Dot/Bar graph.
23	LUX METAR
	This little unit measures light intensity. Photodiode is used as light sensor. The dot/bar graph gives intensity in lux
24	TRAFFIC SIGNAL SYSTEM
	Conventional traffic signal system with red, green yellow LED indicators normally operating in city square.
25	DIGITAL TRAFFIC SIGNAL SYSTEM
	Most sophisticated traffic signal system which shows digital timing.
26	SINGLE TOUCH MULTI CHANNEL SWITCH
	With single touch switch you can operate 10 different gadgets in sequence.
27	ALARM ANNUNCIATOR
	Gives audiovisual indication if any problem occurs in the plant. Accept and Reset facility is provided.
28	INDUCTIVE LOCK
	All to gather different lock uses high frequency oscillator having inductive coil as a key. The lock accepts the signal from this coil key only to switch on the relay for further actuation of solenoid plunger.
29	OFFICE/HOTEL CALL BELL SYSTEM
	One attendant can attend no, of cabins/rooms. The main panel gives audio visual indication of the person calling. The system has got accept, reset and reminder facility.
30	THUMBWHEEL LOCK
	A unique relay operated plunger lock system which opens with one two digit secret code number and close with another two digit secret number. The code number has to enter through thumbwheel.
31	QUIZ MASTER
	This is a useful tool in quiz game. Maximum 6 participants can use. Candidate who knows the answer has to press the P.B. mounted in front of him. This will give audio signal in front of buzzer as well as visual indication in form of LED or lamp.
32	REGULATED POWER SUPPLY
	This 0-30VDC 1A regulated power supply is a must instrument in anybody’s electronic laboratories. Useful in photography, control environmental conditions, measurement of fog density, flame monitoring. Dust measurement etc.
33	TRANSISTOR TESTER
	This little gadget identifies the unknown transistor whether PNP or NPN with correct pin configuration i.e. collector, base, emitter.
34	LOGIC PROBE
	This little handy tool gives quick look at logic states in logic circuit. TTL/CMOS options are provided. Logic high, low, intermittent are shown by different LEDs. Also indicate presence of pulse.
35	PULSE GENERATOR
	Simple pulse generator using IC4093 quad NAND gates. Wide range of frequency can be selected from 1Hz to 1MHz Duty cycle i.e. ON and OFF time can be
36	FUNCTION GENERATOR
	Sine/Square/Triangle wave output having frequency range 0-300Hz and 0-30KHz.with amplitude adjustable up to 5Vmax.
37	AUDIO SIGNAL GENERATOR
	This generator gives pure sine wave in three frequency ranges 300Hz,3KHz, and 30 KHz .Output voltage level can be adjusted from 0 to 1 V rms.
38	ELECTRONIC PRESET TIMER
	Universal timer having three options on delay, off delay, and cyclic with adjustable time facility.
39	SINGLE CYCLE ON/OFF TIMER
	After start command relay will be on after preset time and will remain on for preset time. Both timing adjustable
40	DIGITAL COUNTER
	This 4 digit counter takes input from proximity switches, limit switches. It counts upwards up to 9999. Useful for revolution counting, job counting.
41	DIGITAL CLOCK USING LEDS
	Using simple CMOS IC’s you can make this click which appears like conventional mechanical clock. 60 LEDs for minutes and 12 LEDs for hours are placed in circular fashion.
42	FLASHING LEDS
	Simple two transistor a stable vibrator drives 4 each red and green LEDs alternatively to give blinking effect.
43	RUNNING LEDS IN DIFFERENT MODES
	This amazing circuit gives three different running LED light effects continuous in forward or reverse direction, stop and run effect, periodical change in forward and reverse direction.
44	CABLE TESTER
	It gives instant testing report of any multi core cable. Five LED panel shows open core as well as short between two cores. Three cores can be tested at a time.
45	INFRARED REMOTE SWITCH
	Infra red remote switch uses IR beam to switch ON or OFF the equipment through relay from 3-4 meter. TTL 38/81 transmitter/receiver pair is used.
46	LED FLASHER
	The combinations of various flashing methods display variety of flashing LEDs. Blinking, slow on fast off ,revolving effect, clockwise anticlockwise revolving are few of them are demonstrated in this circuit by connecting LEDs in different fashion
47	LED DICE
	Use this 6 LED dice to play games like snake and ladder etc. Pressing the P.B all 6 LEDs will appear like on as they run at very high speed. After releasing the button one of six will light up to shoe what number have to make move.
48	ELECTRONIC GAME LUCKY NUMBER
	Set your lucky number on the thumbwheel and press the start P.B 10 LEDs running with high speed. As you release the button one out of 10 will light up and if it coincident with your selected numbers you will win.
49	SOLIDSTATE DIMMER
	230 VAC operated dimmer is use full for controlling the light intensity of the bulb up to 100W or speed control of fan. Diactriac combination is used.
50	ELECTRONIC VOTING MACHINE
	Use to elect 5 candidates. Result can be displayed on 5 separate digital counters.
51	PEACOCK FEATHER LED LIGHT
	Peacock feather spreading and closing effect is achieved in this circuit by placing 5 rows of 7 LEDs in half circular fashion. The circuit operates in last in first out mode.
52	DIGITAL DICE
	Apart from LED dice this project has got additional feature of single digit indicator. This make playing games like snake and ladder, businessman, at home more interesting.
53	MOVING LED DISPLAY
	This sign board welcomes your guest with attractive moving LED display. Letters from the word ‘WEL-COME’ lights up one by one, remains on for a while when all the letters light up and then vanishes.
54	AUTO FLUSH VALVE
	This is a water saving system to be fitted in urinal to control the flow of water. The unit detects the entry and presence of the man in front of urinal and starts the flow of water for fix time after his exit.
55	TOKEN INDICATOR USING THUMBWHEEL
	This digital indicator displays 3 digit token numbers. The number can be set with 3 BCD thumbwheels. After entering the number in the thumbwheel, the number will be displayed by pressing ‘SET’ P.B.
56	LED REMOTE SWITCH
	Using white LED or LED torch you can switch on or off relay remotely from 2-3 meter. LDR is used as light sensing element. A sharp blink of LED will switch on the relay and slightly longer duration blink will switch off it.
57	DIGITAL TEMPERATURE CONTROLLER
	LM35 is used as a temperature sensor in this controller. Two set points are provided which can be set with the help of trim pot. Normally ON relay will be OFF as temperature reaches upper set point and will be on when the temperature drop down the lower set point.
58	ELECTRONIC TOY-SUNFLOWER
	This attractive show piece gives effect of blossoming of sunflower as sun rises, proceeds and sets. LDR is used to sense the daylight intensity. The four circles of LEDs start illuminating one by one in the morning and start vanishing in the afternoon.
59	STREET LIGHT CONTROLER
	This street light controller switches ON the lights as the sun sets and dark and switches OFF the light when sun rises. Here photo diode is used as a light sensing device
60	SMOKE DETECTOR
	Opto isolator kept in a closed housing detects the change in the light intensity due to smoke and gives output to actuate relay or buzzer.
61	ELECTRONIC GAME-JACKPOT
	Try your gambling luck here. 3 columns of 10 LEDs runs simultaneously with different frequencies when you press the P.B. if 3 LEDs from each coloumn comes in line you will get points associated with that particular row. Maximum 100 points will be Jackpot for you.
62	ELECTRONIC GAME-SHOOT AT SIGHT
	Show your concentration and quick response here. Set the target out of 10 high speed running LEDs. Hit it when it is called by second row of 10 LEDs. There is more exiting option of random target. HER second row may call any movement to hit and you must be alert to response the same.
63	ELECTRONIC GAME PATIENCE
	This game will test your patience. A probe has to travel from START point up to END point without lifting it from the track as well as touching the side by track.
64	AC FLASHER ( FLASHING LAMP)
	This operation theatre AC lamp flashes at the rate of 1 pulse per second. It directly operate from 230 VAC. Transistorized a stable multi vibrator is used.
65	ELECTRONIC GAME STAR DOT
	Amazing school time game of star and dot to be played by two players one for star and another for dot. Game of nine squares, which first capture three in a row, column or diagonally will win the game.
66	TOKEN INDICATOR KEYPAD
	This sophisticated token indicator uses key pads for entering the 3 digit token number. ‘RESET’ facility is provided tp delete the last entered number.
67	TOUCH SWITCH
	Make this simple touch ON OFF switch by using CD4093 NAND gate IC. Two separate touch plates are used to switch ON and OFF the relay.
68	MAGNETIC LOCK
	The relay in this magnetic lock can be operated only by magnet. Bringing magnet in close proximity of two reed switches placed apart will switch ON and OFF the relay.
69	MINE SWEEPER Electronic Game
	Game of guessing. You have to spot the mine hide in 9 squares in minimum attempts. You may call this game as police and thief. As soon as you spot, the win LED light up
70	JEWEL THEIF
	Ancient game of police and thief is formatted here a ‘JEWEL THIEF’. Two players, one police and another thief can play this game. Thief has to pick up the jewel in form of LED and police has to caught him quickly before he escape.
71	DIGITAL MATHAMATICAL TABLE
	Learn the mathematical with fun. Set the table you want by thumbwheel from 1 to 9and press ‘start’ P.B. The 2 digit display will automatically
72	ELECTRONIC GAME CRICKET
	Now you can play cricket by electronic. To be played between two players a bowler and a batsman. 3 digit display indicates runs scored and single digit no. of wickets.
73	SIREN
	This simple circuit using NAND gate CD4093 and MOSFET drives directly the lous speaker. Very useful in any type of alarm system.
74	FIBRE ALARM
	This is a security fencing arrangement. As soon as closed fiber loop is broken by any means the relay will be actuated to sound the alarm.
75	SOUND (DB) METER
	You can measure sound level in decibel of any preamplifier output or power amplifier or music system. Range from -21 to +6 db can be bar/dot graph.
76	STRENGTH INDICATOR
	Check your muscle power with the help of this unit. Piezo element is used here as a pressure sensor.
77	INFRA RED SECURITY ALARM
	This security alarm uses infra red frequency modulated transmitter and photo transistor receiver, so that whenever the infrared beam falling on photo transistor is interrupted by an obstacle the relay will switch over to actuate alarm.
78	LED DIRECTION INDICATOR
	This attractive LED lighting array can be used as a direction indicator. A single IC CD 4093 quad NAND gate is used here.
79	OPTICAL LOCK
	The optical lock uses combination of LEDs as a lock. Four white LEDs are used with ‘OPEN’ &’CLOSE’ push buttons to form optical key.
80	MAGIC LOCK
	Magic lock circuit is based on principle of resonance circuit. When two oscillators of same frequency are kept in close proximity amplitude of the output frequency will be doubled.
81	TENSION INDICATOR
	This device measures the changes in the skin resistance. When the tension increases the skin resistance falls, when the tension decreases there is increase in the skin resistance.
82	BLOW SWITCH
	This simple circuit can be use as a secret switch for security purposed. The switch opens and closes by puffing out in front of the condenser microphone.
83	ELECTRONIC LANTERN
	Here you can switch on the lamp by match stick and switches off by blowing as we do it in the old oil lantern.
86	WEIGHT INDICATOR
	Load cell is used as a sensorLoad cell is ‘S’ type strain gauge used in bridge configuration having four resistive arms of equal value.
87	HEARING AIDS
	In this hearing aid we use simple operational amplifier circuit in non inverting AC amplifier mode.
89	DC MOTOR SPEED CONTROLLER
	Here simple IC quad NAND gate CD 4093 is used in a circuit. This is wired as a ring oscillator. You can drive two motors having current rating 500mA. With the given values of resistors, presets, and capacitors you can vary the speed from 50 % up to full speed.
92	LIQUID LEVEL INDICATOR
	This liquid level indicator uses magnetic float as a level sensor.
94	DC POWER SUPPLY
	This simple D.C regulated power supply is designed by using commonly available LM 78XX three terminal regulator with several fixed output voltages making them useful in wide range of applications.
95	TOSS
	It is a toss with electronic unit. LED red or green means head or tail will be ON.
96	DIGITAL LOCK
	You can open and close this digital lock by two different 2 digit code number that you can enter by key pad.
97	BATTERY ELIMINATOR
	Normally the battery eliminators are zener regulated power supplies. Full wave bridge rectifier formed by D1, D2, D3, and D4 converts AC secondary voltage of the transformer into pulsating DC voltage.
98	AM TRANSMIIER
	This is a medium power A.M transmitter circuit which deliver around 100 mW of radio frequency power
99	HAND DRYER
	Hand dryer uses IR transmitter/photo transistor receiver TIL 38/81 to detect presence of hand in front of dryer and switching on heater and blower.
100	ELECTRONIC DICE
	This simple circuit displays 1 to 6 numbers at random by 7 LEDs assembled in the format of conventional dice. IC NE 555 timer is used here as a stable multivibrator.
101A	MATCHING PAIR
	Four different categories are provided.(1) gates and symbol (2)resistor color code (3)transistors and symbols (4)different components and their symbols.
101B	MATCHING PAIR
	In ‘A’ 10 LEDs will indicate the correct answer and in ‘B’ audio signal in form of buzzer and a white LED for visual indication is given for correct answer.
102	MIND READER
	Assume one 2 digit number (1 to 99) in your mind. Find out number in associated eight tables. Enter the table number in 8 DIP switch IC5.The 2 digit display will directly indicate the figure in your mind. The game is based on binary coded number.
103	CAPACITIVE SWITCH
	Capacitive switch senses any dielectric material such as wood, glass, plastic, rubber, all granules, all liquids and all metals.
105	3 DIGIT MULTICHANNEL LOCK
	This operates 3 different equipments with 3 different 3 digit code numbers that can be enter by 3 push buttons.
106	PENDULAM
	In this circuit 10 LEDs arrange in half circular manner gives very attractive effect of pendulum as they moves to and fro. In this way you can see LED moving from left to right go to extreme and the right to left like pendulum.
107	BAR CODE READER
	By assigning one number to your product to you can identify the particular product by bar code number.
108	LONG DURATION TIMER
	This simple dual +/- D.C regulated power supply is designed by using commonly available LM 78XX +VE voltage regulator ICs and 79XX –VE voltage regulator ICs.
109	DUEL POWER SUPPLY
	Here is a low cost way intercom circuit with ring tone. IC is used in a stable multivibrator mode to generate a ring
110	SPEEDO METER
	This circuit is based on LM2917N frequency to voltage convertor IC. This IC uses a charge pump technique and output swings to ground for zero input frequency.
113	FUN WITH ALPHABETS
	Here is a circuit with which you can make fun with English alphabets.
114	INTERCOM
	Here is a low cost way intercom circuit with ring tone. IC1 NE 555 timer IC is used in astablemultivibrator mode to generate a ring tone.
115	DIRECTION SENSOR
	Here using three position sensors the direction of the moving object is sensed, whether the object is moving forward /reverse, left/right, clockwise/ anticlockwise.
116	RESISTOR COLOUR CODE IDENTIFIER
	This is a simple but interesting gadget which will help you to calculate the resistor value by the color code printed on the resistor body.
121	BANK LOCKER LOCK
	Bank locker opens with two keys one from customer and other from bank. This lock opens by two keys. IC1 CD4096 is 8 input NAND gate IC.
122	AUTO TAP
	Auto tap uses IR transmitter and photo transistor receiver TIL38/81 to detect presence of hand in front of tap and accordingly control water flow.
123	TRUTH TABLES OF GATES
	This circuit illustrate the output various gates AND, NAND, OR, NOR, X-OR, X-NOR, BUZZER and NOT. This is done by wiring various mechanical.
125	WIRELESS POWER TRANSFER
	The heart of the wireless power transmission is high frequency high voltage oscillator. It is built around NE555 timer IC used here as a stable multivibrator. Frequency of the oscillator is around 30 KHz.
128	ELECTRONIC HARMONIUM
	On the PCB there are 15 copper strips each corresponds to one note that can be set by 15 preset.NE 555timer IC used as a astablemultivibrator
	MICRO CONTROLLER PROJECTS
301	HOTEL CALL BELL SYSTEM
	The silent feature of this system is a single bell is used for all callers. It gives visual indication of the caller in form of flashing LED of that particular caller. This particular system is for eight rooms.
302	ELECTRONIC GAME O & X
	This is game of nine squares to be played by two players. Those who will occupy the three squares in a row or column or diagonal first will win the game.
303	ELEVATOR
	Micro controller based ‘Elevator’ system is designed for ground plus four floors that means total five floors. ATMEGA-16 40 pin micro controller is used here.
304	ALARM ANNUNCIATOR
	This is a centralized system which will give the audio visual indication of the any fault occurs in the plant. In this system eight inputs can be monitored.
305	SEQUENTIAL TIMER
	Sequential timer switches ON and OFF ten different loads in sequence with preset time. ATMEGA-16, 40 pin microcontroller is used here.
306	SECURITY SYSTEM
	This is microcontroller ATMEGA-16 based system which will give audio visual signal in case of any mis happening. This circuit monitors eight points.
308	VOTING MACHINE
	It is for five contestants. When voter presses any push button the corresponding LED will light up to insure the proper voting. At the same time the green LED 6 will be OFF so that you cannot vote twice.
316	QUIZ MASTER
	This is micro controller based unit made for eight participants. As soon as anybody out of eight participants presses his push button the hooter will be sound giving audio indication and the indicator on his table will start flashing to indicate who has pressed the push button.
317	MULTI CHANNEL TIMER
	Multi channel timer has ten different outputs which can operate in three optional modes, on delay, off delay or cyclic. O delay, off delay, on/off time of individual channel can be independently set.
	ROBOTIC PROJECTS / KITS
401	PATH TRACER AUTO CAR
	This path tracing car follows the black track. Draw the black track in between the two optical sensors mounted at the bottom on the front side.
402	TIME CONTROL AUTO CAR
	Time control auto car runs as per preprogrammed sequential timing schedule. IC1 NE555 timer is basic clock generator. Relay contacts are used to drive two BO motors.
404	WIRED CONTROL AUTO CAR
	This is a simple control circuit for DC BO motors. Circuit consists of the bridge formed by four by four transistors. Depending upon the logic level at the junction of the bases of transistor determines whether the motor is rotating in clock wise or anti clock wise direction or stand still.
405	OBSTACLE DETECTOR AUTO CAR
	This is a smart auto car which stops as soon as obstacle comes in front of it and takes the turns to avoid the collision. Infrared transmitter and receiver is used as a obstacle sensor.
406	GOODS CARRIER
	Goods carrier delivers the material from one destination to another. Three square type inductive proximity switches are mounted on the PCB.