Edgefx Technologies Pvt. Ltd.

The project is designed to develop a robotic vehicle that can sense metals ahead of it on its path similar to sensing land mines. The robot is controlled by a remote android application. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

It consists of a metal detector circuit interfaced to the control unit that alarms the user behind it about a suspected land mine ahead. An 8051 series of microcontroller is used for the desired operation.    

At the transmitting end using android application, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end two motors are interfaced to the microcontroller where they are used for the movement of the vehicle.

The android application device transmitter acts as a remote control. While the receiver end Bluetooth device is fed to the microcontroller to drive DC motors via motor driver IC for necessary work. A metal detector circuit is mounted on the robot body and its operation is carried out automatically on sensing any metal underneath. As soon as the robot senses this metal it generates an alarm sound. This is to alert the operator of a possible metal (eg: land mine) ahead on its path.

Further the project can be enhanced by mounting a wireless camera on the robot so that the operator can control the movement of the robot remotely by watching it on a screen.

Additional Information:

• Item Code: 332

The main aim of the project is to acquire data of distribution transformers remotely by GSM modem or XBEE. For this real-time scenario we can take one temperature sensor, one potential transformer and one current transformer for monitoring these 3 data of the transformer and then send the same to a remote location.

3 analog value are taken in multiplexing mode connected to a programmable microcontroller of 8051 family through an IC ADC 0808. Then the values of all the sensors are sent sequentially as per the frequency of multiplexing of the ADC by MC .They are then sent directly to XBEE module operating at 2.4GHz for transmitting the same data.

Remote receiver is also a microcontroller based unit that receives not only the real time data but also the error signal along with to operate corresponding realy for any action with 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 and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.

Additional Information:

• Item Code: 312

The main objective of this project is to develop a home automation system with Android application controlled remote. As technology is advancing so houses are also getting smarter. Modern houses are gradually shifting from conventional switches to centralized control system, involving wireless controlled switches.

Presently, conventional wall switches located in different parts of the house makes it difficult for the user to go near them to operate. Even more it becomes more difficult for the elderly or physically handicapped people to do so. Remote controlled home automation system provides a simpler solution with Android application technology.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. In order to achieve this, Android application act as transmitter, which sends ON/OFF commands to the receiver where loads are connected.

By operating the specified remote switch on the transmitter, the loads can be turned ON/OFF remotely through wireless technology. The microcontroller used here is of 8051 family. The loads are interfaced to the microcontroller using Opto-isolators and TRIAC’s.

Additional Information:

• Item Code: 328

The project is designed to operate electrical loads using an Android application device.  The system operates electrical loads depending on the data transmitted from the Android application device. Operating conventional wall switches is difficult for elderly or physically handicapped people.

This proposed system solves the problem by integrating house hold appliances to a control unit that can be operated by an Android smart-phone/Tablet etc.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation, interfaced to the microcontroller of 8051 family.

The program on the microcontroller serially communicates with Bluetooth device to generate respective output based on the input data (sent from Android application device) to operate a set of relays through a relay driver IC. The loads are interfaced to the control unit through the relays.

The system can be used in existing domestic area for either operating the loads through conventional switches.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.

Additional Information:

• Item Code: 342

The project is designed to control AC power to a load by using firing angle control of thyristor. Efficiency of such power control is very high compared to any other method.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. The project uses zero crossing point of the waveform which is detected by a comparator whose output is then fed to the microcontroller.

The microcontroller provides required delayed triggering control to a pair of SCRs through opto isolator interface.Finally the power is applied to the load through the SCRs in series.

This project uses a microcontroller from 8051 family which is interfaced through a Bluetooth device, which receives signal from Android application device for increasing or decreasing the AC power to the load. A lamp is used in place of an induction motor whose varying intensity demonstrates the varying power to the motor. The varying power results in variation in speed of the motor.

The project can be further enhanced by using direct 230 volt supply instead of 12 volt AC to the bridge rectifier for achieving higher voltage control for charging number of batteries in series.

Additional Information:

• Item Code: 325

The main objective of this project is to provide a security system having the provision to change the password by the authority only. The security of any organization or house is of prime importance always. The concern is for the physical property and also for the intellectual property in case of any organization.

This proposed system provides a user friendly security system for organizations and homes. This system is password based and allows only authorized person to access it with a password. It also has the provision of changing the password.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. The system is fully controlled by the 8 bit microcontroller of 8051 family and android application. The password is stored in an EEPROM, interfaced to the microcontroller and the password can be changed any time unlike a fixed one burnt permanently on to the microcontroller.

Android application is used to enter the password and a relay to lock or unlock the electric door, which is indicated by a lamp. Any wrong attempt to open the door (by entering the wrong password) an alert will be actuated, indicated by another lamp.

Further this project can be enhanced by interfacing a GSM modem to the device so that when a wrong password is entered, an alert SMS will be sent to the concerned authority.

Additional Information:

• Item Code: 340

The main aim of the project is to acquire data of distribution transformers remotely by GSM modem or XBEE. For this real-time scenario we can take one temperature sensor, one potential transformer and one current transformer for monitoring these 3 data of the transformer and then send the same to a remote location.

3 analog value are taken in multiplexing mode  connected to a programmable microcontroller of 8051 family   through an IC ADC 0808.Then the values of all the sensors are sent sequentially as per the frequency of multiplexing of the ADC by MC .They are then sent directly to XBEE module operating at 2.4GHz for transmitting the same data.

Remote receiver is also a microcontroller based unit that receives not only the real time data but also the error signal along with to operate corresponding relay for any action with digitally (user recorded) auto-voice announcement of specific fault with LCD display and wireless connection to PC for 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. 

Additional Information:

• Item Code: 322

The project is designed to find out the exact location of any vehicle and intimate the position to the concerned authority about  through an SMS.

This system includes a GPS modem which retrieves the location of a vehicle in terms of its longitude and latitude. This data is fed to the microcontroller which is interfaced with a GSM modem.

Microcontroller retrieves the location details from the GPS and sends it to the concerned authority  in the form of an SMS over GSM modem on periodical intervals so set by the user. An LCD display is interfaced to the microcontroller for crossing the data received before being sent over GSM

Adopting this technology will be highly useful to transport companies to keep tracking their vehicles. This project can be further enhanced by making an arrangement to stop the vehicle ignition by the owner remotely by sending an SMS in theft situations.

Additional Information:

• Item Code: 310

The project is designed to develop a robotic vehicle using android application for remote operation attached with wireless camera for monitoring purpose. The robot along with camera can wirelessly transmit real time video with night vision capabilities.

This is kind of robot can be helpful for spying purpose in war fields. An 8051 series of microcontroller is used for the desired operation.

At the transmitting end using android application device, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end two motors are interfaced to the microcontroller where they are used for the movement of the vehicle.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. The android application device transmitter acts as a remote control that has the advantage of adequate range, while the receiver end Bluetooth device fed to the microcontroller drives DC motors via motor driver IC for necessary work.

A wireless camera is mounted on the robot body for spying purpose even in complete darkness by using infrared lighting.

Additional Information:

• Item Code: 335

The project is designed to develop a fire fighting robot using android application device for remote operation. The robotic vehicle is loaded with water tanker and a pump which is controlled over wireless communication to throw water. An 8051 series of microcontroller is used for the desired operation.

At the transmitting end using android application device, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end three motors are interfaced to the microcontroller where two of them are used for the movement of the vehicle and the remaining one to position the arm of the robot.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. The android application device transmitter acts as a remote control that has the advantage of adequate range, while the receiver have Bluetooth device fed to the microcontroller to drive DC motors via motor driver IC for necessary work.

A water tank along with water pump is mounted on the robot body and its operation is carried out from the microcontroller output through appropriate signal from the transmitting end. The whole operation is controlled by an 8051 series microcontroller. A motor driver IC is interfaced to the microcontroller through which the controller drives the motors.

Further the project can be enhanced by interfacing it with a wireless camera so that the person controlling it can view operation of the robot remotely on a screen.

Additional Information:

• Item Code: 334

The main aim of the project is to acquire data of distribution transformers remotely by GSM modem. For this real-time scenario we can take one temperature sensor, 3 potential transformers and 3 current transformers for monitoring 3 phase data and any 2 more out of  vibration, moisture content, oil level of the transformer and then transmit the same to a remote location.

All 8 analog value are taken in multiplexing mode  connected to a programmable microcontroller of 8051 family   through an IC ADC 0808. Then the values of all the sensors are sent sequentially as per the frequency of multiplexing of the ADC by MC in GSM  mode of communication.They are then sent through level shifter IC MAX 232 for transmitting the same data by SMS sent periodically.

Remote receiver with another GSM modem attached to a microcontroller through MAX232 receives not only the real time data in the form of SMS but also the error signal along with to operate corresponding relay for any action with 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 and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.

Additional Information:

• Item Code: 317

The project is designed to develop a density based dynamic traffic signal system having remote override facilities. During normal time the signal timing changes automatically on sensing the traffic density at the junction but in the event of any emergency vehicle like ambulance, fire brigade etc requiring priority  are built in with RF remote control to override the set timing by providing instantaneous green signal in the desired direction while blocking the other lanes by red signal for some time.

Traffic congestion is a severe problem in many major cities across the world thus it is felt imperative to provide such facilities to important vehicles.

Conventional traffic light system is based on fixed time concept allotted to each side of the junction which cannot be varied as per varying traffic density. Junction timings allotted are fixed. Sometimes higher traffic density at one side of the junction demands longer green time as compared to standard allotted time.

The proposed system using a microcontroller of 8051 family duly interfaced with sensors, changes the junction timing automatically to accommodate movement of vehicles smoothly avoiding unnecessary waiting time at the junction.

The sensors used in this project are IR and photodiodes are in line of sight configuration across the loads to detect the density at the traffic signal. The density of the vehicles is measured in three zones i.e., low, medium, high based on which timings are allotted accordingly. The override feature is activated by an on board RF transmitter operated from the emergency vehicle.

Further the project can be enhanced by synchronizing all the traffic junctions in the city by establishing a network among them. The network can be wired or wireless. This synchronization will greatly help in reducing traffic congestion. 

Additional Information:

• Item Code: 311

The project is designed to develop a density based dynamic traffic signal system having remote override facilities. During normal time the signal timing changes automatically on sensing the traffic density at the junction but in the event of any emergency vehicle like ambulance, fire brigade etc requiring priority are built in with Android application device remote control to override the set timing by providing instantaneous green signal in the desired direction while blocking the other lanes by red signal for some time.

Traffic congestion is a severe problem in many major cities across the world thus it is felt imperative to provide such facilities to important vehicles.

Conventional traffic light system is based on fixed time concept allotted to each side of the junction which cannot be varied as per varying traffic density. Junction timings allotted are fixed. Sometimes higher traffic density at one side of the junction demands longer green time as compared to standard allotted time.

The proposed system using a microcontroller of 8051 family duly interfaced with sensors, changes the junction timing automatically to accommodate movement of vehicles smoothly avoiding unnecessary waiting time at the junction.

The sensors used in this project are IR and photodiodes are in line of sight configuration across the loads to detect the density at the traffic signal. The density of the vehicles is measured in three zones i.e., low, medium, high based on which timings are allotted accordingly.

The override feature is activated by an on board Bluetooth device from the Android application device operated from the emergency vehicle. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. 

Further the project can be enhanced by synchronizing all the traffic junctions in the city by establishing a network among them. The network can be wired or wireless. This synchronization will greatly help in reducing traffic congestion.

Additional Information:

• Item Code: 339

Notice Board is primary thing in any institution / organization or public utility places like bus stations, railway stations and parks. But sticking various notices day-to-day is a difficult process. A separate person is required to take care of this notices display. This project deals about an advanced hi-tech wireless notice board.

The main objective of the project is to develop a wireless notice board that displays notices when a message is sent from the user’s android application device. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

While the user sends the message from the android application device, it is received and retrieved by the Bluetooth device at the display unit. The Bluetooth access password will only be known to the  user. It is then sent to the microcontroller that further displays the notice sent from the user on to the electronic notice board which is equipped with a 16X2 LCD display. It uses a microcontroller from 8051 family.

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.

Additional Information:

• Item Code: 341

The project is designed to control the speed of a DC motor using an 8051 series microcontroller with android application device. The speed of DC motor is directly proportional to the voltage applied across its terminals. Hence, if voltage across motor terminal is varied, then speed can also be varied.

This project uses the above principle to control the speed of the motor by varying the duty cycle of the pulse applied to it (popularly known as PWM control). Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

The project uses Bluetooth device, interfaced to the microcontroller, which are used to control the speed of motor. PWM (Pulse Width Modulation) is generated at the output by the microcontroller as per the program. The program can be written in Assembly language or in Embedded C.

The average voltage given or the average current flowing through the motor will change depending on the duty cycle (ON and OFF time of the pulses), so the speed of the motor will change. A motor driver IC is interfaced to the microcontroller for receiving PWM signals and delivering desired output for speed control of a small DC motor.

Further the project can be enhanced by using power electronic devices such as IGBTs to achieve speed control higher capacity industrial motors.

Additional Information:

• Item Code: 327

The project is designed to achieve control over the railway level crossing gate through Android Application by the station master. Opening and closing of railway level crossing gate involves manpower, which could be often erroneous leading to accidents.

The proposed system rules out the need of any human involvement at the railway level crossing. This system involves opening and closing of the level crossing gate with help of an Android Application Device.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. A Bluetooth device is interfaced with the system. When the station master sent command to close from the Android application device (when the train is approaching at the level crossing) to the Bluetooth device which while fed to the microcontroller,  sends an output signal which activates a mechanism to switch on the motor to close the gate.

To open the gate, another command needs to be sent for the microcontroller to open the gate with help of motor driver IC. In this project we use a microcontroller of 8051 family, and the input to it is a Bluetooth device which receives command from the user Android application.

The output to microcontroller is given to a motor through a motor driver IC for required operation. The status, whether the gate is open / close is displayed on an LCD display interfaced to the microcontroller.

Further the project can be enhanced by sending an acknowledgement to the sender about the status of the gate.

Additional Information:

• Item Code: 337

The project is designed to control a robotic vehicle using an android application. Bluetooth device is interfaced to the control unit on the robot for sensing the signals transmitted by the android application. This data is conveyed to the control unit which moves the robot as desired. An 8051 series microcontroller is used in this project as control device.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. Transmitting end uses an android application device remote through which commands are transmitted.

At the receiver end, these commands are used for controlling the robot in all directions such as forward, backward and left or right etc.

At the receiving end the movement is achieved by two motors that are interfaced to the microcontroller. Serial communication data sent from the android application is received by a Bluetooth receiver interfaced to the microcontroller.

The program on the microcontroller refers to the serial data to generate respective output based on the input data to operate the motors through a motor driver IC. The motors are interfaced to the control unit through motor driver IC.

Additional Information:

• Item Code: 326

The project is designed to switch industrial loads using a user programmable logic control device and Android application for sequential operation. This operation is generally used for repetitive nature of work. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

Programmable logic controllers used in industrial applications are very expensive for simple operations like sequential switching of loads. In this project we demonstrate the working of this simple operation using a microcontroller of 8051 family. The development of this application requires the configuration of the program through Android application.

In industries, there are many tasks are carried out which requires some repeated operation in various orders and time intervals. For example, certain loads need to be switched ON/OFF in specific time intervals. In order to achieve this, microcontroller is programmed in such a way that the loads a can be operated in three modes: Set mode, Auto mode and Manual mode.

In set mode, through timers, the machinery works based on input time set by the user where as in auto mode it works on default time settings and finally in the manual mode it functions while respective switches are pressed depending on the user’s need and flexibility. All the modes and status of loads are displayed on an LCD.

Thus, tasks performed by costly PLCs can now be achieved using a microcontroller making the device cost effective. Further the project can be enhanced by interfacing it with a GSM modem where by sending an SMS to the control system we can select the mode and timing remotely.

Additional Information:

• Item Code: 338

The project is designed to develop a dish positioning system which can be operated by using an Android application. The main application of using a dish is to receive signal from satellites and other broadcasting sources. In order to position the dish to the exact angle to receive the maximum signal of a particular frequency, it needs to be adjusted manually.

In order to overcome the difficulty of adjusting manually, this proposed system helps in adjusting the position of the dish through an Android application device. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

This system consists of two motors that enable the dish to move both in horizontal and vertical direction. The Android application device acts as a transmitter whose data is received by Bluetooth device which is interfaced to a microcontroller of 8051 family. The Bluetooth device sent data to the microcontroller which is transmitted from Android application device.

The microcontroller sends control signals to the motors through an interface IC also known as motor driver IC. The Bluetooth device serially communicates 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.

Additional Information:

• Item Code: 330

The project is designed to develop a pick n place robotic vehicle with a soft catching gripper.  For example, it can safely handle a bomb very carefully to avoid explosion while catching. The robotic vehicle is android application controlled for remote operation.

At the transmitting end using android application device, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end four motors are interfaced to the microcontroller where two for them are used for arm and gripper movement of the robot while the other two are for the body movement.

The android application device transmitter acts as a remote control that has the advantage of adequate range, while the receiver end Bluetooth device is fed to the microcontroller to drive DC motors via motor driver IC for necessary work. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS; upon a GUI (Graphical User Interface) based touch screen operation.

The main advantage of this robot is its soft catching arm that is designed to avoid extra pressure on the suspected object for safety reasons.

Additional Information:

• Item Code: 333

The objective of this project is to determine the distance of underground cable fault from base station in kilometers USING AN Arduino board. The underground cable system is a common practice followed in many urban areas. While a fault occurs for some reason, at that time the repairing process related to that particular cable is difficult due to not knowing the exact location of the cable fault.

The proposed system is to find the exact location of the fault. The project uses the standard concept of Ohms law i.e., when a low DC voltage is applied at the feeder end through a series resistor (Cable lines), then current would vary depending upon the location of fault in the cable. In case there is a short circuit (Line to Ground), the voltage across series resistors changes accordingly, which is then fed to inbuilt ADC of Arduino board to develop precise digital data for display in kilometers.

The project is assembled with a set of resistors representing cable length in KM’s and fault creation is made by a set of switches at every known KM to cross check the accuracy of the same. The fault occurring at a particular distance and the respective phase is displayed on a LCD interfaced to the Arduino board. Further this project can be enhanced by using capacitor in an ac circuit to measure the impedance which can even locate the open circuited cable, unlike the short circuited fault only using resistors in DC circuit as followed in the above proposed project.

Additional Information:

• Item Code: 351

The main objective of this project is to develop a home automation system using an Arduino board with Bluetooth being remotely controlled by any Android OS smart phone. As technology is advancing so houses are also getting smarter. Modern houses are gradually shifting from conventional switches to centralized control system, involving remote controlled switches.

Presently, conventional wall switches located in different parts of the house makes it difficult for the user to go near them to operate. Even more it becomes more difficult for the elderly or physically handicapped people to do so. Remote controlled home automation system provides a most modern solution with smart phones.

In order to achieve this, a Bluetooth module is interfaced to the Arduino board at the receiver end while on the transmitter end, a GUI application on the cell phone sends ON/OFF commands to the receiver where loads are connected. By touching the specified location on the GUI, the loads can be turned ON/OFF remotely through this technology. The loads are operated by Arduino board through opto-isolators and thyristors using triacs.

Additional Information:

• Item Code: 352

The project is designed to control the speed of a DC motor using an ARM series processor. The speed of DC motor is directly proportional to the voltage applied across its terminals. Hence, if voltage across motor terminal is varied, then speed can also be varied.

This project uses the above principle to control the speed of the motor by varying the duty cycle of the pulse applied to it (popularly known as PWM control). The project uses input button interfaced to the processor, which are used to control the speed of motor. PWM (Pulse Width Modulation) is generated at the output by the microcontroller as per the program. The program is written in Embedded C.

The average voltage given or the average current flowing through the motor will change depending on the duty cycle (ON and OFF time of the pulses), so the speed of the motor will change. A motor driver IC is interfaced to the STM32 board for receiving PWM signals and delivering desired output for speed control of a small DC motor.

Further the project can be enhanced by using power electronic devices such as IGBTs to achieve speed control higher capacity industrial motors.

Additional Information:

• Item Code: 355

The project is designed for LED based street lights with auto intensity control using solar power from photovoltaic cells. As awareness for solar energy is increasing, more and more individuals and institutions are opting for solar energy. Photovoltaic panels are used for charging batteries by converting the sunlight into electricity. A charge controller circuit is used to control the charging.

 Intensity of street lights is required to be kept high during the peak hours. As the traffic on the roads tends to decrease slowly in late nights, the intensity can be reduced progressively till morning to save energy. Thus, the street lights switch ON at the dusk and then switch OFF at the dawn automatically. The process repeats every day.

High Intensity Discharge lamps (HID) 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. LED lights are the future of lighting, because of their low energy consumption and long life they are fast replacing conventional lights world over. White Light Emitting Diode (LED) can replace the HID lamps where intensity control is possible by pulse width modulation.

The intensity control helps in saving energy during late nights while traffic density on the streets is low. A programmable ARM cortex processor STM32 family is engaged to provide different intensities at the different times of night using PWM technique, for energy saving for solar based system, using a charge controller for battery charging, overload and deep discharge protection.

Additional Information:

• Item Code: 356

The project is designed to control the speed of a DC motor using a Raspberry Pi board. The speed of DC motor is directly proportional to the voltage applied across its terminals. Hence, if voltage across motor terminal is varied, then speed can also be varied.

This project uses the above principle to control the speed of the motor by varying the duty cycle of the pulse applied to it (popularly known as PWM control). The project uses keyboard as input interfaced to the board, which are used to control the speed of motor. PWM (Pulse Width Modulation) is generated at the output by the board as per the program. The program can be written in wiring Pi/PHP.

The average voltage given or the average current flowing through the motor will change depending on the duty cycle (ON and OFF time of the pulses), so the speed of the motor will change. A motor driver IC is interfaced to the board for receiving PWM signals and delivering desired output for speed control of a small DC motor.

Further the project can be enhanced by using power electronic devices such as IGBTs to achieve speed control higher capacity industrial motors.

Additional Information:

• Item Code: 358

The project is designed to switch industrial loads using a user programmable logic control device for sequential operation with Raspberry Pi board. This operation is generally used for repetitive nature of work.

Programmable logic controllers used in industrial applications are very expensive for simple operations like sequential switching of loads. In this project we demonstrate the working of this simple operation using a Raspberry Pi board. The development of this application requires the configuration of the program through input key-buttons. In industries, there are many tasks are carried out which requires some repeated operation in various orders and time intervals.

For example, certain loads need to be switched ON/OFF in specific time intervals. In order to achieve this, Raspberry Pi board is programmed in such a way that the loads a can be operated in three modes: Set mode, Auto mode and Manual mode. In set mode, through timers, the machinery works based on input time set by the user where as in auto mode it works on default time settings and finally in the manual mode it functions while respective key-buttons are pressed depending on the user’s need and flexibility. All the modes and status of loads are displayed on PC monitor or a TV.

Additional Information:

• Item Code: 359

This project attempts a soft start control technique for the single-phase a.c. induction motor. It presents a design of a low-cost; high-efficiency drive capable of supplying a single-phase a.c. induction motor with a PWM modulated sinusoidal voltage during start. The circuit operation is controlled by an 8051 family microcontroller.

This project attempts a soft start control technique for the single-phase a.c. induction motor. It presents a design of a low-cost; high-efficiency drive capable of supplying a single-phase a.c. induction motor with a PWM modulated sinusoidal voltage during start. The circuit operation is controlled by an 8051 family microcontroller. The device is aimed at substituting the commonly used triac phase angle control drives. The circuit is capable of supplying a single-phase a.c. induction motor (or general a.c. inductive/resistive load) with varying a.c. voltage at the start.

Same as in triac control, the voltage applied to the load is varied from zero to maximum value in a small span of time during start. On the other hand, it uses a pulse width modulation technique (PWM), and when compared with the phase angle control used for triacs, it produces much lower high order harmonics. Thus, it suits EMC/EMI regulations much better. Because the circuit is aimed at low-cost, low/medium-power applications, it does not use a conventional converter topology to produce the output voltage waveform.

It directly modulates the mains a.c. voltage. Compared with costly converter, it requires a lower number of active and passive power components. In summary, the device attempted here takes advantage of both the low price of the phase angle control and the low harmonic content and high efficiency that we can get with standard converter topology. The drive uses a PWM controlled MOSFET and the load in series with a bridge rectifier. This drive based on this new control technique is targeted for use in consumer and industrial products: washing machine, dishwashers, ventilators, compressors, and wherever the system cost is a consideration.

Additional Information:

• Item Code: 361

This project comprises of circular display of a string of LEDs. Using a high speed motor and some mechanical assembly, LED string mounted on a printed circuit board are duly interfaced to a microcontroller.

An appropriate program while executed drives a pair of single line LEDs in space multiplexing mode. This displays some message and or a clock timing taking advantage of persistence of vision of human eye.

Without the single line of LEDs in space multiplexing mode if one would have to display a message ,number of LEDs as high as 525 would have been used. Here the project uses only 20 LEDs. Thus material count, hardware requirement, brings the overall cost to very affordable price. The synchronizing is be implemented through software.

Additional Information:

• Item Code: 309

The project is designed to control the speed of an induction motor such as fans, by using android application device. In home automation application, convenience of remotely controlling the speed of the fan is achieved.

 Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. Android Mobile or any device act as a transmitter through Bluetooth, which is then received by Bluetooth receiver (at the receiver end) interfaced to a microcontroller of 8051 family.

Each time data sent by android application, as per code written is executed by the microcontroller to deliver delayed firing pulses to the thyristor through optical isolation. The power to the load connected in series with the thyristor is controlled, based on the received signal.

Also the firing angle is displayed on a 7-segment display. A lamp load shall be provided in place of a motor whose varying intensity demonstrates the varying power to the motor for speed control. A lamp is provided in place of an induction motor for demonstration purpose.

Further the project can be enhanced by adding more outputs from the microcontroller feeding relay drivers to switch ON/OFF the domestic loads together with the speed control of fan.

Additional Information:

• Item Code: 329

The project is designed to control a robotic vehicle by voice commands for remote operation. An 8051 series of microcontroller is used together with a speech recognition module for the desired operation.

At the transmitting end using push buttons or voice commands are sent by RF to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end two motors are interfaced to the microcontroller where they are used for the movement of the vehicle.

The RF transmitter can take either switch press or voice commands which are converted to encoded digital data for the advantage of adequate range (up to 200 meters) from the robot. The receiver decodes the data before feeding it to another microcontroller to drive DC motors via motor driver IC for necessary work.

Further the project can be enhanced using DTMF technology. Using this technology we can control the robotic vehicle by using cell phone. This technology has an advantage over long communication range as compared to RF technology.

Additional Information:

• Item Code: 324

This project attempts a new speed control technique for the single-phase a.c. induction motor. It presents a design of a low-cost; high-efficiency drive capable of supplying a single-phase a.c. induction motor with a PWM modulated sinusoidal voltage. The circuit operation is controlled by an 8051 family microcontroller. The device is aimed at substituting the commonly used triac phase angle control drives.

The circuit is capable of supplying a single-phase a.c. induction motor (or general a.c. inductive/resistive load) with varying a.c. voltage. The same as in triac control, the voltage applied to the load can be varied from zero to maximum value. On the other hand, it uses a pulse width modulation technique (PWM), and when compared with the phase angle control used for triacs, produces much lower high order harmonics.

Thus, it suits EMC/EMI regulations much better. Because the circuit is aimed at low-cost, low/medium-power applications, it does not use a conventional converter topology to produce the output voltage waveform. It directly modulates the mains a.c. voltage. Compared with costly converter, it requires a lower number of active and passive power components. In summary, the device attempted here takes advantage of both the low price of the phase angle control and the low harmonic content and high efficiency that we can get with standard converter topology.

The drive uses a PWM controlled MOSFET and the load in series with a bridge rectifier. This drive based on this new control technique is targeted for use in consumer and industrial products: washing machine, dishwashers, ventilators, compressors, and wherever the system cost is a consideration.

Additional Information:

• Item Code: 344

The aim of this project is to develop a device to detect rash driving on highways and to alert the traffic authorities wirelessly the speed details and any speed violation. Accidents due to rash driving on highways are on the rise and people are losing their lives because of others mistakes. In the present system, to detect rash driving the police has to use a handheld radar gun and then aim at the vehicle to record its speed.

If the speed of the vehicle exceeds the speed limit, nearest police station is informed to stop the speeding vehicle. This is an ineffective process as after detecting one has to inform the same and a lot of time is wasted.

The proposed system will check on rash driving by calculating the speed of a vehicle using the time taken to travel between the two set points at a fixed distance and then transmit the data over 2.4GHz to the central control room. A set point consists of a pair of sensors comprising of an IR transmitter and an IR receiver, each of which are installed on either sides of the road.

The speed limit set by the device is kept at the very location depending upon the traffic. The time taken by the vehicle to travel from one set point to the other is calculated by a microcontroller program. Based on that time it then calculates the speed and displays that on an LCD and also transmits the same. Moreover if the vehicle crosses the speed limit, a buzzer sounds alerting the police both at the location and wirelessly at the control room.

This concept can be extended in future by integrating a camera with the system which could capture the image of the number plate of the vehicle to send that to the traffic authorities.

Additional Information:

• Item Code: 347

White Light Emitting Diodes (LED) replaces HID lamps in street lighting system to include dimming feature. An Arduino board is used to control the intensity by developing pulse width modulated signals that drives a MOSFET to switch the LEDs according to achieve desired operation. In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high.

Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs. This system is build to overcome the present day drawbacks of HID lamps. This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement.

LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps. A cluster of LEDs are used to form a street light. The Arduino board contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated.

The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated. This concept in future can be enhanced by integrating it with the solar panel, which converts the solar intensity into corresponding voltage, and this energy is used to feed up the highway lights.

Additional Information:

• Item Code: 348

The project is designed for LED based street lights with auto intensity control by an Arduino board using solar power from photovoltaic cells. As awareness for solar energy is increasing, more and more individuals and institutions are opting for solar energy. Photovoltaic panels are used for charging batteries by converting the sunlight into electricity. A charge controller circuit is used to control the charging. Intensity of street lights is required to be kept high during the peak hours. As the traffic on the roads tends to decrease slowly in late nights, the intensity can be reduced progressively till morning to save energy. Thus, the street lights switch ON at the dusk and then switch OFF at the dawn automatically.

The process repeats every day. High Intensity Discharge lamps (HID) 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. LED lights are the future of lighting, because of their low energy consumption and long life they are fast replacing conventional lights world over. White Light Emitting Diode (LED) can replace the HID lamps where intensity control is possible by pulse width modulation. The intensity control helps in saving energy during late nights while traffic density on the streets is low.

Additional Information:

• Item Code: 350

The main objective of this project is to unlock a garage door by an android application using a unique password entered through the android application device. Opening and closing of garage door involves human labor. In this proposed system, the opening and closing of a garage door is achieved by using an android application.

The owner can connect android application device to the system through Bluetooth, which in turn is connected to an ATMEGA microcontroller controlled garage door that can open/close the door by entering the password. Entering a wrong password generates a buzzer alarm.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. This project is based on the android application, android application send data through Bluetooth. 

Another Bluetooth device connected at the receiving end which is fed to the ATMEGA microcontroller. The sent data (password entered by the user) matches with the password stored in the microcontroller, and then the microcontroller can initiate a mechanism to open the door through a relay operated motor. The project however is supplied with a lamp in place of the motor

Further this project can be incorporated with an EEPROM i.e., a non-volatile memory so that the password can be changed by the owner.

Additional Information:

• Item Code: 353

In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high. Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs. This system is build to overcome the present day drawbacks of HID lamps.

This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement. LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps.

A cluster of LEDs are used to form a street light. The microcontroller contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated. The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also  decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated.

Additional Information:

• Item Code: 354

White Light Emitting Diodes (LED) replaces HID lamps in street lighting system to include dimming feature. A raspberry Pi board is used to control the intensity by developing pulse width modulated signals that drives a MOSFET to switch the LEDs according to achieve desired operation.

In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high. Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs. This system is build to overcome the present day drawbacks of HID lamps.

This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement. LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps.

A cluster of LEDs are used to form a street light. The Raspberry Pi board processor contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated. The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also  decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated.

This concept in future can be enhanced by integrating it with the solar panel, which converts the solar intensity into corresponding voltage, and this energy is used to feed up the highway lights.

Additional Information:

• Item Code: 357

The main aim of the project is to process the real time data acquisition wirelessly under supervisory control for large scale remote industrial environment. In large industrial establishments many processes go on, therefore it is essential to monitor all the processes and control the factors affecting them. Adapting a technology like WIRELESS SCADA (Supervisory Control and Data Acquisition) one can achieve the above mentioned objective effectively, and thus saving a lot of manpower.

For achieving this real-time scenario, a temperature logging system for a remote plant operation is taken. Here temperature sensors are duly interfaced to the 8051 microcontroller. Data collected from the temperature sensors are constantly sent over 2.4 GHz transmitter wirelessly to the microcontroller which is then received at the matched 2.4 GHz USB type receiver connected to a PC / Laptop. At the front end, “DAQ System” (software) is loaded on the computer which takes these values and displays them on its front panel, and also logs them in the database.

One can set parameters like set point, low limit and high limit on the computer screen. When the temperature of a sensor goes beyond set point the microcontroller sends a command to the corresponding relay. The heaters (shown as lamps) connected through relay contacts (corresponding to their sensors) are turned OFF (or ON in vice versa). High limit and low limit features are available for generating an AV alarm on the PC in the event of system failure. Hence, processes at hazardous areas can be controlled with more accuracy and better safety using SCADA. Adapting such a technology will save both money and time.

NOTE: This project is tested on Windows XP operating system. For other operating system please copy the relevant files from any XP system as explained in the net.

Additional Information:

• Item Code: 346

The project is designed for LED based street lights with auto intensity control using solar power from photovoltaic cells interfaced to a Raspberry Pi board. As awareness for solar energy is increasing, more and more individuals and institutions are opting for solar energy. Photovoltaic panels are used for charging batteries by converting the sunlight into electricity. A charge controller circuit is used to control the charging.

 Intensity of street lights is required to be kept high during the peak hours. As the traffic on the roads tends to decrease slowly in late nights, the intensity can be reduced progressively till morning to save energy. Thus, the street lights switch ON at the dusk and then switch OFF at the dawn automatically. The process repeats every day.

High Intensity Discharge lamps (HID) 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. LED lights are the future of lighting, because of their low energy consumption and long life they are fast replacing conventional lights world over. White Light Emitting Diode (LED) can replace the HID lamps where intensity control is possible by pulse width modulation.

The intensity control helps in saving energy during late nights while traffic density on the streets is low. A Raspberry Pi board is engaged to provide different intensities at the different times of night using PWM technique, for energy saving for solar based system, using a charge controller for battery charging, overload and deep discharge protection.

Further the project can be enhanced by using time programmed dusk to dawn switching based on latitude and longitude of a specific place. It can also be interfaced to a LDR to follow the switching operation precisely

Additional Information:

• Item Code: 360