Microcontroller

Abstract Women’s security is a critical issue in today’s world and it’s very much needed for every individual to be acting over such an issue. This paper describes a “GPS, GSM and Zapper Circuit based women safety system” that provides the combination of GPS device specialized to track the location as well as provide alerts and messages with an emergency button trigger. It also contains shock mechanism to produce non-lethal electric shock in emergency situation. Our endeavour behind this paper is

Electrical and Electronics. I was motivated to choose this field of study due to a previous attempt at implementing a cell-phone controlled robot that worked on decoding DTMF signals. The choice paid off when after gaining some knowledge about microcontrollers in my first year, I managed to get the robot up and running. The satisfaction gained has always been a motivational factor in my career decisions. I believe my keen interest developed through projects as well as my basic professional experience

applications. Among these, microcontrollers stand as a lower cost alternative, satisfactory reliability, simplicity, reduced consumption energy, however, with limited memory capacity and processing. A microcontroller contains a processor, memory access and peripheral input / output. It is a microprocessor that can be programmed for specific functions, in contrast to other general purpose microprocessors (such as those used in PCs). Basically, the use of a microcontroller is in the processing of data

1. INTRODUCTION Laser tag is a team or individual sport or recreational activity where players attempt to score points by tagging targets, typically with a hand­held infrared­emitting targeting device. Infrared­sensitive targets are commonly worn by each player and are sometimes integrated within the arena in which the game is played. Since its birth in 1979, with the release of the Star Trek Electronic Phasers toy manufactured by the South Bend Electronics brand of Milton Bradley, laser tag has

by shorting the stator on the AC side of the rectifier. Two relays, connected across the three phases of the generator are turned on/off by the same signal from the microcontroller. Using a resistive voltage divider configuration, the generator’s voltage and the battery voltage are monitored through the ADC of the ATmega8 microcontroller. The voltage divider configuration converts the full range of the generator voltage and the battery voltage to 0-5 V range. The output from this voltage divider configuration

system Most of the times we may not be able to find accident location because we don’t know where accident will happen. Our project Real Time Vehicle Tracking and Accident Detection with GPS is designed to avoid such situations. Keywords-GPS, GSM,microcontroller AT89S52, Accident detection I.INTRODUCTION- Now-a-days lots of accidents happen on highways due to increase in traffic and also due to rash driving of the drivers. And in many situations the family members or the ambulance and police authority

modules is equipped more towards giving the preparation to drawing nearer those spaces as opposed to as top to bottom preparing on a particular methodology. Embedded C contains key data for anybody creating inserted frameworks, for example, microcontrollers, continuous control frameworks, cell phone, PDAs and comparable applications. This C course depends on numerous years of experience showing C, broad modern

uses three components for map building Ultrasonic range sensor, Stepper motor driver and Serial communication system. The microcontroller here is a central processing unit to coordinate the previous three. Ultrasonic Range Sensor SRF05: The sensor operates in Mode 1 which uses a separate trigger and echo pins. These pins are connected to the PORT A of the microcontroller and are responsible for triggering and measuring the time of flight of the echo. The trigger pulse has a minimum duration

displaying notices in colleges on electronic notice board by sending messages in form of SMS through mobile; it is a wireless transmission system which has very less errors and maintenance. The hardware board contains microcontroller AT89c52 at the heart of the system. The microcontroller is interfaced with GSM Modem via MAX232 level convertor. It is used to convert RS232 voltage levels to TTL voltage levels and vice versa. The hardware also has a 64K EEPROM chip AT24C64. This EEPROM is used to store

Bough Woolley Multiplier using Tanner Tools, Number Keypad for Door locking system (using Atmel ATMega8 AVR Microcontroller) and GSM based SMS controlled Robot have been efficacious in tempering my groundwork and refining the finesse. The Gsm Based SMS controlled Robot Project employed designing a robot interfaced with a GSM module (RS232 communications) using Atmel ATMega8 AVR microcontroller. The remotely accessible, battery operated robo-device performs the corresponding output in accordance to