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    BIG BROTHER!

    Agree to audioguru. RF never been easy. Also many parts in cellphone already be BGA type ICs with unknown pinouts, no way for home builder to disassemble and using... ::)
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    locking system

    I think what you have to do first is to think of how to interface those items: keypad, alarm, camera, door lock to the computer. Be honest, if you are using a computer to do the work, everything are far too easy; only you need is to how to write program for interfacing. And mostly, "google"...
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    Beginning Projects

    I think it would be better to work on a DC/battery powered project first if you have no idea on electronics/electric.
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    Which program saves *.pcb files?

    Try to use a text editor to open it first and check the header see if the file belongs to which program.
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    Final Year Project For Electronic Egn

    I think what you have to do is to consult your professor or supervisor. Because mostly you have to do projects to please them rather than us. Right?  :P
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    Light bulb dimmer

    some low cost dimmer will use SCR +  diac circuit...
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    Sound To Light Box help

    I agree with Audioguru. Especially you don't know much on the circuit.
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    Program a menu

    use STV5730 as OSD driver for analog video.
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    Parking Lot Counter Question

    You can try using 74HC193, the binary up/down counter and cascade them to counter up to 50.
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    COMPUTER SYSTEM

    It is a technology trend in using different buses...... the newest have the higher data flow bandwidth and faster speed.
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    Solder Fumes

    I do approx. the same as Audioguru...... hold my breath while soldering.... and I will not apply paste unless it is necessary..... More is...... I will blow away the fumes..... when it comes up......
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    pcb layout for electronic stethoscope

    why not layout yourself? 2 days is far more enough for this layout............ ::)
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    fm tranismiter

    nice pictures..... Sasi. So how are their performance then?
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    Can I run two regulator circuits off one transformer secondary?

    unless you are using analogue meter.......digital meter will be able to take the 5V at its negative probe.....
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    Want to use LED Dot Matrix Board

    Like audioguru said, only one column will be considered at a time. At the same time, you can determine which LED in a row will lite. Each column will state on a very short period of time and loop. I think it is no more method to make the LED matrix lites as you decided.
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    I'M Lost!

    Give a try and use spybot:search and destroy  to scan  for checking spyware.... you will get more spyware that adaware doesn't show you...... Here is the website and it is freeware http://www.safer-networking.org/en/download/
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    telephone forwarding

    you have to change the phone system..... building your own circuit is not efficient ... buy one!
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    Can I run two regulator circuits off one transformer secondary?

    You have to build a rectifier circuit before the two regulator circuits. Also be caution on the current drawn from each regulators and the circuit behind them.
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    How do I start off for a Robot

    don't be kidding....... using Pentinum processor will drive you into nightmare......... unless you got an industrial control board based on intel CPU..... else... don't touch it........ and most MCU are sufficient to perform motor controls........
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    fm tranismiter

    My veroboard sample will not as tidy as Audioguru does............ :P Good job Audioguru!!! I got to learn from you... ;D
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