distance finder based on at89s52 and ultra sonic sensors hc sr04

Ultrasonic range finder using 8051 .
A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to 2.5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module HC-SR04 forms the basis of this circuit. The ultrasonic module sends a signal to the object, then picks up its echo and outputs a wave form whose time period is proportional to the distance. The ....etc

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i am mamatha.studying b tech in mallareddy engineering college.sir i am doing my project on the topicmicro controller based industrial timer..
sir please i want exact block diagram and definition to present in ppt..please kindly provide the information what i asked ....etc

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I need the project report for gsm based home security system
and also the ppt for it.can u plz send it..my mail is [email protected] ....etc

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report about project of multizone home security system ....etc

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i want usb 200 universal programmer software for window 7(64 bit).. ....etc

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fingerprint based attendance system using at89s52

Personal Safes are revolutionary locking storage cases that open with just the touch of your finger. These products are designed as secure storage for medications, jewelry, weapons, documents, and other valuable or potentially harmful items. These utilize fingerprint recognition technology to allow access to only those whose fingerprints you choose. It contains all the necessary electronics to allow you to store, delete, and verify fingerprints with just the touch of a button. Stored fingerprin ....etc

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This RFID based HOME SECURITY project is developed to build a security system for a Home / office to prevent others from entering the important piece / room controlling the RFID selecting a suitable RFID card. The RFID tag gives the identifier unique whenever he reads the card information. Identifying this information is sent to the microcontroller to check the good card to take a measure of security. If the ID card is the original information, it allows to enter the room, if not give the buzzer as an indication of bad person tried to enter the ....etc

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I need to get the code of at89s52 for the automatic solar panel writing in C lamguage ....etc

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pwm based on dc motor control using at89s52 microcontroller

A pulse width modulator (PWM) is a device that may be used as an efficient DC motor speed controller or light dimmer. This project is a versatile device that can control DC devices which draw up to a few amps of current. The circuit may be used in either 12 or 24 Volt systems with only a few minor wiring changes. This device has been used to control the speed of the DC motor and to control brightness of an automotive tail lamp. A PWM circuit works by making a square wave with a variab ....etc

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Density based traffic light control system project report is useful for electronics and communication students for understanding various aspects of project design.

Traffic is formally organized in many
jurisdictions, with marked lanes, junctions,
intersections, interchanges, traffic signals, or signs.
Traffic is often classified by type: heavy motor
vehicle (e.g., car, truck); other vehicle (e.g., moped,
bicycle); and pedestrian. Different classes may
share speed limits and easement, or may be
segregated. Some jurisdictions may have v ....etc

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