Electrofriends

Digital IC Tester

by Ranjith | November 20th, 2008.
Digital IC Tester

Unlike the IC testers available in the market today which are usually expensive, this IC tester is affordable and user-friendly. This IC tester is constructed using 8951 microcontroller along with a keyboard and a display unit. It can test digital ICs having a maximum of 24 pins.

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Programmable number lock system

by Ranjith | November 19th, 2008.
Programmable number lock system

Programmable number lock system is a high security number lock system that can be used to lock electronic devices. The present system is very user friendly. This system is a combination of software and hardware at its best. We have used a 8051 microcontroller kit for interfacing our system.

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Stepper motor control board

by Ranjith | November 17th, 2008.
Stepper motor control board

This project is actually an educational kit. One can study the full operation of unipolar type stepper motor using this board. As it is micro controller based it can be programmable also and one can learn micro controller interfacing with LEDs, key board and stepper motor. Thus single board serves the purpose of learning stepper [...]

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Automated multistoried car parking system

by Ranjith | November 7th, 2008.
Automated multistoried car parking system

Introduction
Basic idea
Hardware description

Display section
Keyboard, Indicator & Beeper section
Lift & motor section
Sensor section
LCD section

Software program

1.Introduction:
Automatic multistoried car parking system helps to minimize the car parking area. In the modern world, where parking-space has become a very big problem and in the era of miniaturization, it is become a very crucial necessity to avoid the wastage of [...]

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