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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

LGKT012: Gas Leakage Detection Alarm
This kit Gas Leakage Detection Alarm is based on gas leakage system and its control. In this kit we can simply detect the gas leakage using MQ6 gas sensor and when it senses the gas, alarm will be enable to show the alert.

 1 Days
 Expert
 639

LGKT014: DTMF Robot
DTMF is the acronym for Dual tone modulation frequency. Robotic vehicle based on DTMF technology is explained in this article. Here is a circuit that operates the robot without using a microcontroller. This circuit consists of simple ICs.

 1 Days
 Expert
 1229

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

LGKT016: Wireless Alarm
The objective of Kit Wireless Alarm Using RF Module is to design a security system which can be control wirelessly using RF module. In the kit Wireless Alarm Using RF Module HT12E encoder IC takes 4-bit binary sequence from the DIP switch.

 1 Days
 Beginner
 619

LGKT018: Wireless Direction Control of DC Motor
The main objective of the kit Wireless Direction Control of DC motor is to providing an efficient and simple method for the control direction of DC motor using RF. This kit uses RF modules.

 1 Days
 Advanced
 1099

LGKT026: Water Pump Controller
The kit Water Pump Controller is based on water level which is a reliable circuit. When water overflowing starts the motor automatically off. This product is designed to control of motor (water pump). There are two open wires which are connected to indicate the level one is ground and other is level.

 1 Days
 Beginner
 959

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

LGKT030: Wireless Door Control System
The main idea of developing the kit RF based door control system is for providing an efficient and simple method for the control direction of DC motor using RF (Radio Frequency) technology or door control by using RF technologies.

 1 Days
 Advanced
 999

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

LGKT034: School Bell Alarm
In the kit School Bell Alarm when peon wants to beep the school bell then they have to press the momentary switch then school bell is on for few second according to the value of resistance and capacitance. We can change the on time the changing by capacitor and resistance.

 1 Days
 Beginner
 529

LGKT038: DC Motor Speed Controller
The aim of this kit to control speed of a small 12 volt DC motor. They is simple circuit because used a little piece of component. By has a Nand gate Digital cmos IC number CD4011 is main of circuit.

 1 Days
 Intermediate
 839

LGKT002: Motion Sensor For Security Light
The kit Motion Sensor for Security Light is designed to detect the motion in the room and put on the room light when there is a motion. The project uses a PIR sensor to detect the motion and the analog and digital circuit to put on the light for the particular duration of the time.

 1 Days
 Advanced
 749

LGKT028: Flasher For Dipawali using BT136
The objective of the kit Flasher for Deepawali is to design a circuit for a portable electric lamp-cum-LED flasher. It uses a 25W, 230V AC bulb and nine LEDs. When the bulb glows all the LEDs remain 'off, 'and when the LEDs glow the bulb remains 'off.'. In this kit Flasher for Deepawali .

 1 Days
 Advanced
 509

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

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

LGKT045: Numericai Water Level Indicator
Most water-level indicators for water tanks are based upon the number of LEDs that glow to indicate the corresponding level of water in the container. Here we present a digital version of the water-level indicator. It uses a 7-segment display to show the water level in numeric form from'0' to '9'

 1 Days
 Beginner
 429

LGKT046: Remote Control Home Appliances
This kit Remote Controlled for Home Appliances can be connect to any of your home appliances (lamp, fan, radio, etc) to make the appliance turn on/off from a TV, VCD or DVD remote control. The circuit can be activated from up to 10 meters.

 1 Days
 Expert
 709

LGKT047: Automatic Street Light Control
The kit Automatic street light control needs no manual operation for switching ON and OFF when there is need of light. It detects itself whether there is need for light or not. When darkness rises to a certain value then automatically light is switched ON and when there is other source of light i.e. day time, the light gets OFF.

 1 Days
 Beginner
 569

LGKT050: Automatic Bathroom Lamp
This simple circuit can be used as an automatic bathroom lamp controller. It disables the bathroom lamp at daytime and enables it at night. The working of the circuit is based on the opening/closing of the bathroom door.

 1 Days
 Intermediate
 739

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

LGKT053: Speed Control Of Uni-Polar Stepper Motor
A unipolar stepper motor only operates with positive voltage, so the high and low voltages applied to the electromagnetic coils would be something like 5V and 0V. In this project the pulse given to stepper motor from 555 timer time, timer given pulse to decade counter IC CD4017.

 1 Days
 Expert
 919

LGKT055: Over/Under Voltage Protection
The Objective of the kit Over/Under Voltage Protection is to design a system to protect the system from the over voltage and under voltage condition. As the voltage increases the supply is cut off. In this there is also provision for under voltage protection.

 1 Days
 Advanced
 659

LGKT057: Blown Fuse Indicator
In the kit Blown Fuse Indicator Fuse is a common device that is used in every electrical or electronics equipments or devices. Fuse is a protective element of every device which protects the electrical equipments against high voltage

 1 Days
 Expert
 509

LGKT061: Over Temperature Alarm With Fan ON
The over-temperature monitoring alarm circuit from the integrated circuit temperature sensor for temperature measurement devices, it only set a maximum limit of temperature control points. When the temperature exceeds the limit temperature, the alert sound, prompting the user attention.

 1 Days
 Beginner
 819

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

LGKT076: Model Railway Signal Project
In the kit Model Railway Signal Project Railway signaling is a system used to control railway traffic safely, essentially to prevent trains from colliding.

 1 Days
 Beginner
 589

LGKT091: DC Stabilized With Short Circuit Indication
In the kit Stabilized Power Supply with Short Circuit Indication here is an efficient 4-stage stabilized power supply unit for testing electronic circuits. It provides well regulated and stabilized output, which is essential for most electronic circuits to give proper results.

 1 Days
 Intermediate
 609

LGKT100: Adjustable Timer Circuit
The kit Roulette is a casino game named after a French diminutive for little wheel. In the game, players may choose to place bets on either a single number or a range of numbers, the colors red or black, or whether the number is odd or even.

 1 Days
 Intermediate
 509

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

LGKT064: Alcohol Level Tester
This is a very useful circuit for testing whether a driver is drunk or not. The circuit is easy to use, inexpensive and indicates various levels of alcohol consumption through LEDs.

 1 Days
 Intermediate
 929

LGKT070: Self switching power supply
The main concept of this project is to design a circuit which is used to turn off the power supply automatically when no current is drawn by the load. The current drawn by the load can be varied by using the potentiometer setting. The proposed system uses a rectifier and other electronic devices. Based on the condition of the load, the power supply is controlled by the relay and transistor arrangement in the circuit.

 1 Days
 Expert
 589

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

LGKT093; Curtain Opener and closer
This circuit will open and close the curtain of your home and 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.

 1 Days
 Expert
 1029

LGKT096: Automatic Plant Irrigation System
The irrigation is the only when there is not enough moisture in the soil and the sensors decides when should the pump be turned on/off, saves a lot time for the farmers. This also gives much needed rest to the farmers, as they don’t have to go and turn the pump on/off manually.

 1 Days
 Beginner
 509

LGKT103: AC Power Supply fail alarm
Here is a simple mains power failure alarm/detector circuit that produces an alarm whenever the mains supply fails. Lot of such circuits are available, but the peculiarity of this circuit is that it requires no backup power source like a battery to power the alarm when the mains is absent.

 1 Days
 Expert
 519

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