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The iPod story seems to be that of a charmed life. If you haven't taken a look around there are all kinds of devices and accessories that are created in order to use right along with the wildly popular and successful iPod product offered by Apple. In fact, I can't think of a better coup for Apple to have pulled off against the giant PC industry, even Microsoft's new product the Zune is having a great deal of difficulty even catching up to the sales that iPod seems to have no trouble garnering. The success is something that may define explanation but could have a great deal to do with the equally popular accessories and adornments that are made for each and every iPod product. You might be wondering exactly what this has to do with auto sound systems but those are just another of the many great iPod accessories that can be found in the market place of today. Seriously! Even some car manufacturers are having upgrades that include iPod adapters that allow drivers to play music...

This is a simple PIC Security System Dials Your Cell Phone Circuit Diagram . Do-it-yourself phone dialer security system calls your cell phone, office etc. whenever a door or window is opened, or panic button is pressed. Great Home Alarm. PIC Security System Dials Your Cell Phone Circuit Diagram The circuit consists of a small PIC microcontroller, assembly program, and a few other parts to detect a switch closure from an open door, window, or manual push button and then dial the cell phone number, and transmit a steady tone to indicate the source of the call. The circuit uses the pulse dialing system to interrupt the line connection a number of times to indicate each digit. Pulse dialing (the oldest form of dialing) works by actually disconnecting or "hanging up" the phone line a number of times to indicate each digit. For example, the digit "5" would be dialed by disconnecting and reconnecting the line 5 times in short intervals of about 100mS. There is about a 1 s...

This is a Password based Door locking system with GSM. The project mainly consisting of PIC microcontroller (16F877), 16x2 LCD Display, GSM Modem, Keypad and misc.(Relay, Crystal oscillator, power supply which is not shown in circuit diagram) The program is compiled using PICC Compiler and simulated on Proteus 8. All Header and simulation files are given at the bottom of this post. The default password is set as 123. This project can be implemented anywhere where, higher security is required. If the user enters correct password, that is “123”, the relay gets active and opens the door. If an un-authorised person trying to access the system and enters the password incorrectly three times, the system gets locked and alert the owner by sms using Gsm modem. Once the system gets locked a count down timer will appear on lcd and you have to wait that predetermined time period. Read More.....

Watching movies is a neat escape from the stressful lifestyle we live in. Watching movies in a wide screen and surround sound take you far away and into the movie scene you are watching. You watch it as if you were there in the movie scene. Of late, we can only experience this escape in a cinema. However, modern technology may be able to provide this same sight and sound experience right in your own living room. We will discuss the basic components of a home theater system in this article. Read on to understand how these basic components can deliver the best cinematic experience to a home theater system. Home theater experts state that the most important consideration in setting up a home theater system is the size of the room where you will set up the home theater system. The most important component of the home theater system, which is the television, is dependent on the size of the room. Although, the recommendation is 27 inches television set at a minimum is necessary for your home...

O.S.S.D.A.S v1 stands for Open Source Solar Data Acquisition System. I have been working on this project since last few months. The picture below is the not the first prototype, but the first working prototype that looks like quite complete. There will be further revisions to the hardware and software for best efficiency and accurate results. Moreover, the recorded digital data should be rich enough to reflect the real world data’s mirror. [ ]

Skema Rangkaian Circuit combination of the 3 IC TDA2822  above can be used for 5.1 audio power amplifier system with low power output . The input signal used is analog signal not digital (SPDIF) , so it needed some input to the jack input. The speakers are suitable for use have impedance 8 Ohms , and with power 4 Watt, to Left , Right , Rear pair , center , and subwoofer speakers. To run this circuit , is also required circuit for volume control as tone control. Component and technical Information : C1-C6 : 220uF/25V C7-C9 : 47uF/16 V IC       : TDA2822 x3 CON-1: VCC +12volts DC CON-2: Ground CON-3: Left Speaker CON-4: Right Speaker CON-5: Rear Speaker CON-6: Rear Speaker CON-7: Center Speaker CON-8: Subwoofer Speaker X1-1:Ground X1-2:Subwoofer Input X1-3:Center Input X1-4:Rear Input X1-5:Rear Input X1-6:Right Input X1-7:Left Input See this Printed circuit board below: circuit and PCB Design use Cadsoft Eagle Software

Simple and easy Video Switch for Intercom System Circuit Diagram. Nowadays a lot of intercom units are  equipped with video cameras so that you can  see as well as hear who is at the door. Unfortunately, the camera lens is perfectly placed  to serve as a sort of support point for people  during the conversation, with the result that  there’s hardly anything left see in the video  imagery.  One way to solve this problem is to install two cameras on the street side instead only  one, preferably some distance apart. If you  display the imagery from the two cameras  alternately, then at least half of the time you  will be able to see what is happening in front  of the door. Thanks to the video switch module described  here, which should be installed on the street  side not too far away from the two cameras,  you need only one monitor inside the house and you don’t need to install any additional video cables.   C...

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This active audio audio system use three TDA2052 chips and 5 speakers ( one woofer, two tweeters and two midranges ). For this TDA2052 active audio system we need dual 20 volts power supply and five volts supply for the stand by function.To the input of the every audio IC chip is placed an audio filter for filtering the audio signal for used speakers ( low pass for woofer , high pass for midranges and tweeters) The subwoofer plays the 20 to 300 Hz frequency range, while the remaining 300 Hz to 20KHz are sent to two separate channels with stereo effect.If one of the amplifier is affected by clipping distortion the others amplifiers are not affected .