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Arduino Based Attendance System Using RFID Tag

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The main objective of this project is to record the attendance of students using RFID tags. Each student is provided with his/her authorized tag to swipe over the reader to record their attendance.   In classrooms, time is wasted in roll calls as it is done manually. In this proposed system, authorized student is given an RFID tag. This tag contains an integrated in built circuit that is used for storing, processing information through modulating and demodulating of the radio frequency signal that is being transmitted. Thus, the data stored in this card is referred as the identification/attendance of the person. Once the student places the card in front of the RFID card reader, it reads the data and verifies it with the data stored in the microcontroller from AVR family. If the data matches, then it displays a message on the LCD confirming the entry of that student else displays a message denying the attendance. The status of a student’s attendance can be retrieved from this sys
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Alcohol Detection and Engine Locking System Using AVR Micro Controller

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We usually come across drink and driving cases where drunk drivers crash their cars under the influence of alcohol causing damage to property and life. So here we propose an innovative system to eliminate such cases. Our proposed system would be constantly monitoring the driver breath by placing it on the driver wheel or somewhere the drivers breath can be constantly monitored by it. So if a driver is drunk and tries to drive the system detects alcohol presence in his/her breathe and locks the engine so that the vehicle fails to start.         In another case if the driver is not drunk while he starts the vehicle and engine is started but he/she drinks while driving the sensor still detects alcohol in his breath and stops the engine so that the car would not accelerate any further and driver can steer it to roadside. In this system we use an AVR family micro controller interfaced with an alcohol sensor along with an LCD screen and a dc motor to demonstrate the concept. So here the
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Arduino Based Solar Cell Parameter Measurement System

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The project is  designed  to  measures different solar cell parameters like light intensity, voltage, current and temperature by using multiple sensor data acquisition. The project uses a solar panel to monitor sunlight and Arduino board which has ATmega family microcontroller attached to it. The project requires an LDR sensor for measuring light intensity, a voltage divider to measure voltage and a temperature sensor to measure the temperature. These measurements are then displayed by the microcontroller to a LCD screen. Thus this system allows user to effectively monitor solar parameters using this system.
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AVR Micro controller Based Foot Step Power Generation System

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Here we propose an advanced footstep power generator system that uses peizo sensors to generate power from human footsteps.  The system allows for a platform for placing footsteps. The peizo sensors are mounted below the platform to generate voltage from footsteps.  The sensors are placed in such an arrangement so as to generate maximum output voltage. This is then provided to our monitoring circuitry. The circuit is a micro controller  based monitoring circuit that allows user to monitor the voltage and charges a connected battery by it. It also displays the charge generated and displays on an LCD display. Also it consists of a USB mobile phone charging point where user may connect cables to charge mobile phone from the battery charge. Thus we charge a battery using power from user footsteps, display it on LCD using micro controller circuit and allow for mobile charging through the setup.
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AVR Micro Controller Based Single Phase Induction Motor Control Using Pulse Width Modulated Sinusoidal Voltage

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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 AVR micro controller.
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Bluetooth and ARM Cortex Based Electric Car Controlling System

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Electric cars have already hit the roads and have marked the beginning of electric vehicle era.  Here we design an improved electric vehicle that is made to tackle urban traffic problems and also provide accurate speed control without gearing system. Also it is a zero emission, earth friendly vehicle. Our proposed vehicle has been designed on an android interface and demonstrates accurate speed controlling as well as easy turning functionality for electrical vehicles using four motor drive system. Here we use an android device interface to control the vehicle. The device allows the user to send commands through an android device via Bluetooth connection. The circuit system consists of a Bluetooth receiver connected to ARM cortex. The ARM is also interfaced to four motors, and uses a battery to supply 12V power supply. On receiving the commands the ARM processor processes user sent instructions. If turning instructions are found the system turns vehicle with synchronized speed at reg
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AVR Micro controller Based Load Temperature Controller

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The main purpose of this Digital Temperature Controller is to control the temperature of any device like AC or any other electronic devices whose temperature keeps fluctuating and thus requires a constant watch on the device. The use of this system eliminates constant watching on the device by self controlling the temperature of the system. Our proposed project consists of digital temperature sensors for more accurate temperature control in various industries. Our system overcomes the disadvantages of thermostat/analog systems in terms of accuracy. This system can be used in any firm or organization where it is very important to maintain precise temperatures. LCD display is used to display the temperature and when the temperature exceeds the set limit, the lamp is switched off in order to control the temperature. The heater is demonstrated with the help of a lamp. After the heater is switched off, the AC is switched ON. Here AC is demonstrated with the help of small fan. After the
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