Efxkits's Videos 63 videos
Model no: 36 High intensity discharge lamp (HID) presently used for urban street light are based on principle of gas discharge, thus the intensity is not controllable by any voltage reduction method as the discharge path is broken. White Light Emitting Diode (LED) based lamps are soon replacing the HID lamps in street light. Sensors used on either sides of the road send logic commands for the LEDs at the output to get glowing for a patch ahead. Intensity control is also possible by pulse width modulation based on sensing the movement and density of vehicles. The pulse width becomes very narrow on sensing no movement of vehicles. As the vehicle moves forward, the intensity goes on increasing for few lights ahead, and as it passes away the intensity goes on falling. Thus this way of dynamically changing intensity or off to on helps in saving a lot of energy. A programmable microcontroller is engaged to provide different duty cycle for different intensities at different density conditions. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 20 Mar 2012
  • 511
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The main scope of project is to send commands from one cell phone to be received by another cell phone mounted on the robot to receive the DTMF (Dual Tone Multi Frequency) mode commands which are then decoded by a DTMF decoder. The corresponding codes are then fed to a microcontroller, programmed to recognize those codes to operate 2nos DC motors through motor driver IC for any direction movement as per the sent commands from sender’s mobile. The motors are controlled using L293D IC which is a motor driver IC. It uses MC from 8051 family and a battery for power source. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 20 Mar 2012
  • 282
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Model no: 34 This ultrasonic proximity detector comprising independent, battery or AC powered transmitter and receiver sections make use of a pair of matched ultrasonic piezo ceramic transducers operating at around 40 kHz each. This circuit is used in getting reflected signals of 40 KHz from the object (like a missile) to feed that to a program to the microcontroller. Opamps are used to amplify the weak signals received upon reflection from the obstacle, by the receiving ultrasonic transducer sent by the transmitting one, to switch on appropriate load while the program is executed at the microcontroller end. In this application of project consist of the ultrasonic transmitter and receiver which works for the frequency of 40 kHz and the 555 timer is used to generate the 40 kHz frequency. At the receiver side the received signal is amplified and given to the microcontroller which is used as to operate the relay driver (ULN2003) for operating the relay to drive the loads. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 20 Mar 2012
  • 644
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Model no: 33A Automatic college bell system for indicating the completion of period is a reliable circuit that takes over the manual task of switch on/off the college bell with respect to time. It has an Inbuilt Real Time Clock (RTC) which tracks the Real Time. When this time equals to the programmed ‘ON’ time, then the corresponding Relay for the device is switched ON and then OFF as per the ‘OFF’ time that finally switches the load ON or OFF. Multiple ON/OFF times entry is the biggest advantage with this project. Matrix keypad helps entering the time while relays used with relay drivers for the loads. The complete circuit has its on-board power supply. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 20 Mar 2012
  • 552
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Model no: 32A The microcontroller based door locker is an access control system that allows only authorized persons to access a restricted area. The system is fully controlled by the 8 bit microcontroller which has an 8KB of ROM for the program memory. A matrix keypad is interfaced to the microcontroller to enter the password while a relay driver IC is used to switch on loads through relays. The complete circuit is built with on board power supply The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 20 Mar 2012
  • 431
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The front of the car is fitted with an array of two pair of photo sensors, comprising of one IR transmitter and a photo diode in each which allows the car to detect a black path as well as any turns in the path. Colors that reflect light, such as white, produces a reflected output from the sensors whereas black color that absorbs would output low for the base drive of a pair of Darlington pair of transistors. We provide a path by pasting a black tape on a white floor. The reflected light is possible only when it is in path. Once it goes out of track/line the reflection stops and the corresponding transistor is deprived of base drive so one of the motor stops while the other continues to run to bring back the robot on the track. By reading the outputs from each of the two sensors, Darlington pair of transistors is biased. Two DC motors are connected to the collector of the transistor TIP122. The motors are able to turn the steering left or right, depending on what logic signal the sensor sends. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 20 Mar 2012
  • 281
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Model no: 23A The outline of the project is that the text message typed using a computer keyboard through hyper terminal, attached to a microcontroller to be sent, is encrypted by using an appropriate program with LCD display and then the encrypted message is transmitted through wireless using Radio frequency transmitting Module. At the receiver end the signal is received by the RF receiver module and the analog signal is converted to digital form. It is fed to another Microcontroller where it is decrypted by the program and the message is then displayed over the receiver LCD display. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 6 Mar 2012
  • 382
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Model no: 23 The outline of the project is that the text message typed using a computer keyboard attached to a microcontroller to be sent, is encrypted by using an appropriate program with LCD display and then the encrypted message is transmitted through wireless using Radio frequency transmitting Module. At the receiver end the signal is received by the RF receiver module and the analog signal is converted to digital form. It is fed to another Microcontroller where it is decrypted by the program and the message is then displayed over the receiver LCD display. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.
  • 6 Mar 2012
  • 430
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Model no: 19 This application is used for office automation system to save energy. 555 timer driven 38 KHz signal from IR LED gets interrupted on to the IR receiver to sense the person entering as well as exiting which is fed to a 555 timer. The output of 555 timer is fed to the Microcontroller for analyzing and control purpose. The data obtained from microcontroller is given to the 7-segment display unit which displays the number of persons entering, and exiting. This project includes TSOP 1738 IR sensor for detecting purpose. A relay is used to control any load for alert through its ‘NO’ contacts. It is interfaced with microcontroller through a relay driver. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 6 Mar 2012
  • 623
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Model no : 18A The display unit, which is used to display the results of corresponding temperature of a nuclear plant and to generate a warning signal in the event of rising temperature beyond limits as set. Here the controller continuously polls the temperature with certain regular time intervals and displays over the 7_segment display unit for the Microcontroller to enable the whole operation by executing the program. The temperature readings observed by the microcontroller through temperature sensor are compared with the programmed temperature value to in turn operate the relay that switches on a warning device. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 6 Mar 2012
  • 373
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Model no: 17A In this project, a generic real-time wireless communication system is designed and developed for temperature monitoring of a transformer to control room by applying appropriate protocol. The primary function of this system is to monitor the temperature of the transformer. The data collected by the digital temperature sensor is sent to the Microcontroller. The Microcontroller transmits the data over the air by RF (radio frequency). At the receiving end a receiver is used to receive the data and it decodes and feeds it to the Microcontroller, which is then displayed over the LCD display. For more info visit *******www.efxkits****; *******www.facebook****/edgefx The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.
  • 5 Mar 2012
  • 517
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Model no: 17 In this project, a generic real-time wireless communication system is designed and developed for short and long term remote patient monitoring applying appropriate protocol. The primary function of this system is to monitor the temperature of a patient’s body. The data collected by the digital temperature sensor is sent to the Microcontroller. The Microcontroller transmits the data over the air by RF (radio frequency). At the receiving end a receiver is used to receive the data and it decodes and feeds it to the Microcontroller, which is then displayed over the LCD display. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 5 Mar 2012
  • 597
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model no: 15A The main objective of the project is designing an automatic washing machine for programmable sequential switching of motors using embedded system based microcontroller concept. The development of this application requires the configuration of microcontroller architecture that is the selection of the machines, and writing debugging of the application program. In this project, the clock plays an important role, where it is used in the following mode i.e., the set mode, auto mode and manual mode for controlling different machines. In set mode, through the digital clock the machinery will run based on/off and on time where as in auto mode they will run by default settings and finally in the manual mode the real-time systems. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 5 Mar 2012
  • 622
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Model no: 15A The main objective of the project is designing an automatic washing machine for programmable sequential switching of motors using embedded system based microcontroller concept. The development of this application requires the configuration of microcontroller architecture that is the selection of the machines, and writing debugging of the application program. In this project, the clock plays an important role, where it is used in the following mode i.e., the set mode, auto mode and manual mode for controlling different machines. In set mode, through the digital clock the machinery will run based on/off and on time where as in auto mode they will run by default settings and finally in the manual mode the real-time systems. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 5 Mar 2012
  • 394
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The main objective of the project is designing a programmable sequential switching of any load using embedded system based microcontroller concept. It uses microcontroller from 8051 family which is of 8-bit. The development of this application requires the configuration of microcontroller architecture that is the selection of the machines, and writing debugging of the application program. In this project, the clock plays an important role, where it is used in the following mode i.e., the set mode, auto mode and manual mode for controlling different machines. In set mode, through the digital clock the machinery will run based on/off and on time where as in auto mode they will run by default settings and finally in the manual mode the real-time systems used extensively in industrial control applications can run depending on the user’s need and flexibility. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 4 Mar 2012
  • 561
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The main motto of the project is to drive an Induction Motor for the required application in forward direction and reverse direction with Wireless technology. In this project thesis, we are pressing a button from a TV remote which acts a transmitter and send signal to and it is received by a component called IR receiver, the output is fed to a programmable microcontroller from 8051 family, is engaged to actuate the Induction Motor to rotate in forward and reverse direction with help of relays which is driven by an IC ULN2003 (relay driver). The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 4 Mar 2012
  • 918
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Model no : 13 Star/Delta starters are probably the most common reduced voltage starters in the 50Hz industrial motor world (Known as Wye / Delta starters in the 60Hz USA world). They are used in an attempt to reduce the start current applied to the motor during start as a means of reducing the disturbances and interference on the electrical supply. The Star/Delta starter is generally manufactured from three contactors; an electromechanical timer and a thermal overload for operating a 3 phase motor at 440 volt at ac mains supply 50 Hz. The interlocking arrangement of all the contactor coils is traditionally wired in 440 volt ac. However in our project we have taken up the same to operate a 3 phase motor at 440 volt ac mains supply 50 Hz with a set of 12 volt DC relays, an electronically adjustable timer and a set of miniature circuit breakers. The interlocking arrangement of the relay coils and the electronic timer are all wired in low voltage dc of 12 volt fed from an inbuilt dc power supply for safe handling of the starter during the study, still retaining its is application for a 3 phase motor starting with single phasing prevention .as the project would be expensive in using a 3 phase induction motor the project shall be tested with a set of lamps for each phase . during star operation the lamps would glow dim indicating the supply voltage across the coils are 440/sqrt(3) and while in delta condition after the timer operates the lamps would glow with full intensity indicating full supply voltage of 440volts. The timer comprises of a 555 in mono-stable mode the output of which is fed to a relay for changing the mains supply from 3 phase star to delta. The project also has the provision of single phasing protection since 3 phase motors get burnt if any one phase goes missing during running. The output to the lamps shall be completely cutoff in the event of any phase failure. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 3 Mar 2012
  • 1 645
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Model no: 12A This project is designed to operate a garage door remotely by laser beam. The circuit comprises of a laser beam sensor built using op-amp IC LM358. Op-amp’s are configured here as a comparator. The Microcontroller used is 8-bit, 40 pin from 8051 family. It is used to control the whole system by monitoring the sensors and when the laser sensor receives the signals then the microcontroller will send command to relay driver IC the contacts of which are used to switch on the motor used for opening the garage door and it will switch off the motor after predetermined time. The status of the door whether it is open or closed is displayed on the 16X2 LCD interfaced with the microcontroller. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
  • 3 Mar 2012
  • 596
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