I have a question about the connection of coin slot to relay..
I
Is it better to connect the coin slot directly to microcontroller or should I connect it to relay before to microcontroller.

Coin slot:
red=Vcc
black=Gnd
white=counter
gray=coin

with these four wires, where should i connect the relay?,
once i inserted a coin (1 peso), i measure the output voltage, and it reads only 0.2V which cannot drive the relay..what should i do?.

any help is much appreciated..thank you in advance.! ....etc

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An automotive AM/FM hidden antenna using the slot between the body of the automobile and a metal solar heat-reduction film in the front windshield is described. Such solar heat-reduction metal films are becoming common and thus represent an opportunity to incorporate an antenna at only marginal cost. The radio frequency (RF) input impedance and gain patterns are described, and techniques for impedance matching are shown. ,Theoretical and experimental antenna patterns are compared in this seminars,The application of this mobile system to the me ....etc

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automatic car parking slot indicator using pic16f887 microcontroller

Abstract :

Automatic car parking system is very good substitute for managing car parking area. Since in modern world, where space has become a very big problem and in the era of miniaturization it s become a very crucial necessity to avoid the wastage of space in modern, big companies and apartments etc. In space where more than 100 cars need to be parked, it s a very difficult task to do and also to reduce the wastage of area, this system can be used. This Automatic Car P ....etc

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hello can u send me d infomation abt dis topic pls send me as soon as possible ....etc

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hi i am working on digital system so i am going to design digital coin counter this idea came in my mind now i need help on it i mean to get the basic idea on it can any one guide me??????????????????? ....etc

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The attached pdf is good. refer this one too:
http://gr.ssr.upm.es/docencia/grado/antenas/papers/On%20slot-coupled%20microstrip%20antennas%20and%20their%20applications%20to%20CP%20operation-theory%20and%20experiment.pdf ....etc

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i choose the topic named traffic light with down counter all four sides seprate counter display using 89c51 so can u send me the ppts for this topic to give a presentation..my email id is [email protected] ....etc

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parking slot indicator using microcontroller at89s52 material ....etc

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INTRODUCTION
LARGE generators play a key role in power systems. Because they are expensive, unexpected breakdowns represent huge economic losses. High quality maintenance is therefore essential to ensure a high level of availability. In short, it is very important to ensure that large generators are in good repair and can run stably The vibration of stator bars caused by electromagnetic force exists in the operation of large generators and this is worsened by loose stator slot wedges. The severe vibration accelerates the deterioration ....etc

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SLOT VIEW SIMULATION OF WIND ELECTRICAL SYSTEMS



ABSTRACT
As a result of increasing environmental concern, more and more electricity is generated from renewable sources. One way of generating electricity from renewable sources is to use wind turbines. A tendency to erect more and more wind turbines can be observed. As a result of this, in the near future wind turbines may start to influence the behaviour of electrical power systems. Therefore, adequate models to study the impact ....etc

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