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2:01
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
5 Mar 2012
229
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1:45
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
5 Mar 2012
380
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2:44
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
284
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2:43
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
214
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1:21
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
169
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1:45
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
286
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2:56
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
370
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1:05
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
404
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0:41
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
207
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1:46
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
372
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1:33
Model no: 40 The main scope of project is to send message from any tampered energy meter to be received by the control room by RF communication. The receiving signals are then fed to a microcontroller, programmed to recognize those tampered meters to provide a display at the control room with buzzer sound each time it is tampered. The project consist of the IR transmitter which is used to transmit the IR signals here we are using the photodiode IR receiver. In project shows that if any tampering is going on with energy meters it gives the signal to microcontroller through photodiode. Microcontroller gives the output that signal is given to the encoder and this transmitted through the RF module. At the receiver side it consists of decoder and the decoded signal is given to the microcontroller and that used to display the message. 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
21 Mar 2012
302
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2:16
Model no: 48 The project takes care of reminder need of people who forget to take medicines in time. Keypad entry stores the relevant information with several timings based on a RTC (Real Time Clock) IC. At the programmed time the message for the medicine is displayed over a 16 digit LCD display together with a buzzer sound to alert the person for taking the appropriate medicine. The microcontroller used in the project is of 8051 family which is of 8 bit. For more info visit *******www.efxkits****; *******www.facebook****/edgefx
21 Mar 2012
443
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1:37
Model no: 59 Power factor is defined as the ratio of real power to apparent power, where real power is the time integral of the instantaneous power measured over a full period and the apparent power is simply the product of the RMS voltage and RMS current measured over the entire period. The time lag between the zero voltage pulse and zero current pulse duly generated by suitable operational amplifier circuits in comparator mode are fed to two interrupt pins of the microcontroller where the program takes over to actuate appropriate number of relays at its output for bringing shunt capacitors into the load circuit to get the power factor till it reaches 0.95. The microcontroller used in the project is of 8051 family which is of 8 bit. 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.
21 Mar 2012
216
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2:54
Model no: 76 The main aim of the project is to acquire the real time data acquisition with a impact of supervisory control for large scale Remote Industrial Environment. For this real-time scenario we are taking a temperature logging System for an remote plant operation. Here 8 analog temperature sensors in multiplexing mode are connected to a programmable microcontroller of 8051 family through a IC ADC 0808. Then the values of all the sensors are sent serially by MC through Max 32 IC to the Computer. Software “DAQ System” loaded on the Computer takes these values and shows them on its front panel, and also logs them to the data base "daq.mdb". One can set by interactive way some parameters like set point, low limit, and high limit on the computer screen. When temperature of some sensors increases beyond set point, the microcontroller sends commands to relay driver IC ULN2003. The heaters (lamps in the test board) connected through relay contacts are (specific for that sensor) turned OFF (or ON in opposite case). High limit and low limits are for generating an alarm in the event of system failure. When temperature goes above high limit or low limit the alarm is going to blow a sound. 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
22 Mar 2012
326
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1:26
Model no: 109 The main aim of the project is to maintain information which is auto secrecy for the other persons in the field of telecommunications. This project is developed to fire out the hacking of information in communication system. In order to meet this requirement we are using 4 telephones connected parallel through a single telephone line. When any one of the telephone is lifted,the relay with stands with connection and current passes and makes the IC OptoCoupler MCT23,and o/p is fed to a programmable microcontroller of 8051 family ,and send a signal to display which telephone line is lifted is displayed in a 7 Segment display, while other telephones will be tripped off by making relays offs with help of a Relay Driver IC(ULN2003). This Project can be used in houses and offices where more than one telephone is connected in parallel through a single telephone line. This can be achieved in both incoming and out going calls. 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
22 Mar 2012
149
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2:11
The main objective of this project is to develop a project to control the railway gate through sms. This project works with GSM modem which is used to send a message when ever a railway gate is open or closed message is sent to the station master which is done by interfacing between a programmable microcontroller of family 8051 and GSM modem is done by a voltage level shifter called IC MAX232 which used a serial communication. the microcontroller sends a interrupt to make active for the motor to gate open /close with help of Motor driver called L293D that controls the motion or rotation of motor mounted at railway level crossing gate with 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 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
24 Mar 2012
655
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