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LGKT004: FM Transmitter
A wireless frequency modulated (FM) transmitter is an aftermarket device that allows listeners to play a portable audio source through any radio with an FM band, such as a car stereo. It has no physical connection to the radio

 1 Days
 Intermediate
 359

LGKT005: Digital Thermometer
In the kit Digital Thermometer, thermometer is device to measure the temperature or temperature gradient using a variety of different principles.

 1 Days
 Beginner
 369

LGKT006: Letterbox With Letter-Counting Facility
Here is a circuit that starts counting when you insert a letter in the letterbox at your home or office. It is designed to save your time from going to the letterbox to check if there are letters inside. The number of letters present in the box is indicated by a seven-segment display.

 1 Days
 Expert
 429

LGKT007: Water Level Indicator
This Kit water-level indicator uses a 7-segment display, instead of LEDs, to indicate the water level (low, half and full) in the tank. Moreover, a buzzer is used to alert you of water overflowing from the tank. The circuit shows the water level by displaying L, H and F for low, half and full, respectively.

 1 Days
 Intermediate
 379

LGKT010: Simple Remote Tester Using T-Shop
In the kit Simple Sensitive Remote Tester USING T-SOP handy gadget for testing of infrared (IR) based remote control transmitters used for TVs and VCRs etc.

 1 Days
 Intermediate
 309

LGKT011: Contact less AC Mains Indicator
This is a CMOS IC (CD4033) based circuit which can be used to detect presence of mains AC voltage without any electrical contact with the conductor carrying AC current/voltage.

 1 Days
 Beginner
 339

LGKT013: Short-Circuit Protection
The main circuit is protected from any damage due to short-circuit in the additional power supply circuit by cutting off the derived supply voltage. The derived supply voltage restores automatically when shorting is removed.

 1 Days
 Intermediate
 239

LGKT015: Binary To Decimal Decoder
In this circuit, we will build a BCD to 7 segment display decoder circuit using the 4511 chip. A BCD to 7 segment decoder circuit is a circuit that intakes a binary value and displays the equivalent decimal value on the 7 segment display.

 1 Days
 Intermediate
 289

LGKT019: Automatic Night Lamp with Morning Alarm
he kit Automatic Night Lamp with Morning Alarm automatically turns on a night lamp when bedroom light is switched off. The lamp remains ‘on’ until the light sensor senses daylight in the morning. A super-bright white LED is used as the night lamp.

 1 Days
 Beginner
 459

LGKT021: 7 Stage Binary Counter Display With LED
This circuit basically the base of the usability IC number CD4042 (7 Stage binary counter). By the circuit will regard the binary digit arrive at 128 BIT. Then show with LED 7 the make easy build the education.

 1 Days
 Advanced
 289

LGKT022: Bicycle Indicator
The kit bicycle indicator described here uses low-cost components and is a good substitute to many commercially available versions. It works in an extremely different manner and is convenient to operate.

 1 Days
 Beginner
 299

LGKT024: Wire Break Alarm with Delay
The kit Wire-Break Alarm With Delay activates after a delay of 15 to 30 seconds. When the thin-wire loop running across the entrance door is broken, the alarm sounds after a delay of 15 to 30 seconds, the time period set through variable resistance.

 1 Days
 Intermediate
 299

LGKT025: Electronic Heart
In this kit Electronic Heart glowing on and off, like a human heart beats. The circuit uses an NE555 timer wired in Astable multi vibrator mode. Its frequency of oscillations is determined by resistors and capacitor.

 1 Days
 Beginner
 269

LGKT027: Door Bell for Front and Back Door
This kit Door Bell for Front Door and Back Door produces two different sounds one for the front door and one for the back door. The circuit takes NO CURRENT when not producing a sound

 1 Days
 Intermediate
 309

LGKT029: Cell Phone Detector
The most common electronic equipment used is cell phones. With advancement in communication technology, the requirement of cell phones has increased manifold. A cell phone typically transmits and receives signals in the frequency range of 0.9 to 3GHz.

 1 Days
 Expert
 329

LGKT031: Moving LED Light When An Audio Signal Is Provided
This kit LED Light movement the audio signal with LM358- IC4017 that have features of running pace with a changing voice, the tiny microphone for a fun. The circuit operates when a signal is to change the MIC audio signal and power amplifiers to be stronger.

 1 Days
 Intermediate
 379

LGKT032: Fastest- Finger- First- Indicator
The kit fastest finger first quiz-type game shows are increasingly becoming popular on television these days. In such games, fastest finger first indicators (FFFIs) are used to test the player’s reaction time.

 1 Days
 Intermediate
 379

LGKT039: Electronic Cricket Match
This kit electronic cricket match is a present for Kids. This circuit can be used to play Cricket Match with your friends. This kit can use to play cricket for kits, Each LED in the circuit indicates various status of the cricket match like Sixes, Run out, Catch etc.

 1 Days
 Intermediate
 289

LGKT001: ATM Machine Gate Security System
This kit ATM Machine Gate Security System is an effort to design a security system for the ATM machine gates or ATM machine. The arrangement requires proper implantation to work. If someone forcibly opens the gate or try to move the ATM machine from its position it will blow an alarm.

 1 Days
 Intermediate
 449

LGKT009: Spy Ear (audio amplifier)
This kit Spy Ear light-weight gadget produces an adjustable gain on sounds picked up from the built-in high-sensitivity condenser microphone. So you can hear what you have been missing.

 1 Days
 Intermediate
 369

LGKT040: Driving A Bicolor LED
In the kit driving a Bicolor LED, Bi-color LEDs often contain both green and red LEDs connected in ‘inverse parallel’. This means if current flows one way through the device the LED lights green, and if current flows the other way the LED lights red.

 1 Days
 Beginner
 249

LGKT041: Reaction Timer Calculator
he kit Reaction time Calculator is the interval time between the presentation of a stimulus and the initiation of the muscular response to that stimulus.

 1 Days
 Advanced
 309

LGKT042: Night Vision Enhancer
In the kit Night Vision Enhancer green LED based flashlights are widely used by hunters and others in similar activities to light up their way and alert other hunters of their presence. Green light does not interfere with the hunt, as animals are blind or indifferent to green light. Green is also a good night-vision retention color that allows one to distinguish colors such as yellow and red on maps and charts.

 1 Days
 Beginner
 259

LGKT043: Positive to Negative Voltage Converter
The advantage of the kit Positive to Negative Voltage Converter is that, the negative voltage together with the original positive supply can be used to simulate a dual supply.

 1 Days
 Beginner
 249

LGKT044: Door Knock Alarm With Timer
This low-cost circuit uses the piezoelectric element of a piezobuzzer as the input sensor. The piezoelectric element plate is fixed at the centre of the door wing by using a cello tape. Apply a small quantity of adhesive at the edges between the plate and the door.

 1 Days
 Intermediate
 439

LGKT049: Simple Water Level Indicator
The kit Simple Water Level Indicator Using Transistor is very easy to build four led for indication of levels in sequence and a buzzer is used to indicate over flow condition, for using the circuits attach the six wires or probes in the water tank at your desired level.

 1 Days
 Beginner
 279

LGKT051: Voltage Doubler
Most of this project is circuit used for doubling the voltage uses the principle of charging and discharging the capacitor. The voltage doubler circuit described below is used to double the input DC power by using IC 555 timer with capacitors and diodes.

 1 Days
 Beginner
 289

LGKT052: DTMF Receiver IC MT8870 Tester
DTMF is a term which used in telephone industry. When any key on telephone or mobile phone is pressed one tone is generated and it is audible which is nothing but a DTMF tone.

 1 Days
 Intermediate
 389

LGKT062: Light Controlled Sound Effects
A sound effects generator that is controlled like a theremin and makes very unique sounds using two 555 timers. One time is a low frequency signal generator that modulates the other 555 timer with triangle-like waveform.

 1 Days
 Advanced
 369

LGKT063: Transistor Tester
In the kit Transistor Tester a transistor analyzes, suitable for testing both NPN and PNP transistors. In the kit Transistor Tester the 555 operates at 2Hz. The Output of pin 3 drives the circuit with a positive then zero voltage. The other end of the circuit is connected to a voltage divider with the mid-point at approx 4.5v.

 1 Days
 Beginner
 469

LGKT065: Clap Based Device Control
This circuit is based on two commonly used IC that is NE555 timer and CD4017 IC with few more components. 555 timer IC wired as an monostable oscillator.

 1 Days
 Intermediate
 319

LGKT066: Traffic Light Control
In the kit Traffic Light Control Traffic lights alternate the right of way of road users by displaying lights of a standard color (red, yellow/amber, and green), using a universal color code (and a precise sequence to enable comprehension by those who are color blind).

 1 Days
 Expert
 289

LGKT068: Dice Project
The kit Dice Project a die is a small throw able object with multiple resting positions, used for generating random numbers. This makes dice suitable as gambling devices for games like craps, or for use in non-gambling tabletop games.

 1 Days
 Advanced
 299

LGKT071: Continuity Tester
The kit Continuity Tester circuit will detect continuity between two points. Basically this circuit used as any PCB testing, continuity testing, wire testing etc.

 1 Days
 Beginner
 309

LGKT072: Electronic Lock Project
In the kit Simple Electronic Locke Project ,electric lock connected to an access control system include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded.

 1 Days
 Beginner
 269

LGKT073: Adjustable 1-10 Minute Timer Project
In the kit Adjustable 1-10 Minute Timer Circuit a timer is a specialized type of clock. A timer can be used to control the sequence of an event or process. Whereas a stopwatch counts upwards from zero for measuring elapsed time, a timer counts down from a specified time interval, like an hourglass.

 1 Days
 Intermediate
 279

LGKT075: Christmas Decoration Project
The kit Christmas decoration is any of several types of decorations used at Christmas time. Typical icons of the holiday include Baby Jesus, Santa Claus, and the star of Bethlehem. This project is used to glow the different type led at different rates.

 1 Days
 Advanced
 469

LGKT077: Model Railway Level Crossing Light
In the kit Model Railway Level Crossing Light a level crossing occurs where a railway line is intersected by a road or path on one level, without recourse to a bridge or tunnel.

 1 Days
 Intermediate
 309

LGKT079: Rain Alarm
Here is an easy project which will give the alarm when there is rain. 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.

 1 Days
 Beginner
 439

LGKT095: LED Dimmer
In the kit LED Dimmer we can adjust the brightness of one or more LEDs from 5% to 95%. The kit LED Dimmer This project uses PWM technique to dim the intensity of the LED light. Here, the DC source is connected to NE555 timer.

 1 Days
 Intermediate
 249

LGKT054; Digital touch switch and alarm
This is Touch Switch ON-OFF circuit used a part compares with voltage 2 group , within the integrated circuit timer LM555 or NE555. For perform wait for catch the change of voltage

 1 Days
 Beginner
 319

LGKT058: Door Mat switch
This simple Simple Mat Switch Circuit Diagram produces a warning beep when somebody crosses a protected area in your home or office. The switch, hidden be-low the floor mat, triggers the alarm when the person walks over it.

 1 Days
 Advanced
 299

LGKT059: Battery level indicator
The heart of this battery level indicator circuit is LM3914 IC. This IC takes input analog voltage and drives 10 LED’s linearly according to the input analog voltage. In this circuit there is no need of resistors in series with led’s because current is regulated by the IC.

 1 Days
 Expert
 379

LGKT069: Automatically Day indicator
his is Automatic day indicator circuit, by LED display each day one by one LED. Which use principal of light-activated in day with sun. To set a LDR-sensor and CD4017 acts as drive LED of 7 pcs for 7 day there.

 1 Days
 Advanced
 309

LGKT078: LED Chaser with Variable Speed
This project is based on LED flashing,If you want to build a 10 LED Chaser circuit we suggest this circuit first. It uses popular IC is a simple and affordable IC-4017 decade counter and IC-555.

 1 Days
 Beginner
 499

LGKT082: Metal Detector
his is the set up.When the metal detector circuit is placed near to a metal object the inductance of its coil changes , and so do the frequency of oscillations.Now the two frequency will be different , there will be no cancelling and radio produces a hissing sound.The metal is detected.

 1 Days
 Expert
 259

LGKT089: 555 Timer Based Binary Counter
Here we are discussing a simple circuit using 555 timer IC as an ASTABLE MULTIVIBRATOR. This circuit make an LED blink for every half second, and the square wave output of 555 IC is connected to a BINARY counter of 8bit (74HC4040).

 1 Days
 Intermediate
 359

LGKT090: Laser security alarm
Security is main concern for various buildings, houses and offices. For this purpose, there are a variety of security alarms available in market which uses various types of technology for intruder detection like infrared sensors, motion sensors, ultrasonic sensors, laser sensors, etc.

 1 Days
 Expert
 339

LGKT092: Clock with LED Pendulum And Tick Tock sound
Electronic clock with LED pendulum & tick tock sound produces Tick Tock sound every second and it has a LED pendulum in which 6 LED glow in forward and reverse sequence like a Pendulum

 1 Days
 Intermediate
 386

LGKT097: Flashing Beacon
Here we present a flashing beacon that uses well-known regulator IC LM317T. As LM317T regulator can deliver more than 1 amp. A small 12V, 10W bulb with a high-quality reflector can serve as a good visible blinker.

 1 Days
 Expert
 459

LGKT099: Sound Generator With Multiple Sound
Here is the circuit that produces five tones. This is a simple toy piano circuit with 555 timer. We can also use this circuit as a Machine gun. Main heart of this circuit is 555 timer IC. The 555 timer is operated in astable multi-vibrator mode. In astable multi-vibrator mode, the circuit produces accurate free running waveforms, which can be adjusted.

 1 Days
 Intermediate
 319

LGKT102; Night Security Alert
In this kit The output has only two states high and low and cannot remain in any intermediate stage. In night time if any thief trying to open the door light fall on the LDR then. The result as a sound will be generate to a time period

 1 Days
 Intermediate
 299

LGKT104: DC Over Voltage Trip
This voltage protection circuit is designed to develop a high-voltage tripping mechanism to protect a load from any damage. In many of the homes and industries fluctuations in DC supply take place frequently.

 1 Days
 Expert
 249

LGKT106: Piezo Electric Buzzer
In this kit we learn how to make a very simple buzzer using piezo electric transducer and hardly any electronic components. The simple buzzer circuit described here actually works in a quite unique way. Instead of the normal working concept employed by other forms of oscillators which require resistor and capacitor networks for generating the oscillations.

 1 Days
 Intermediate
 289