1. Electronic Eye Based Security System
The project is proposed as a security system with a photo-sensing arrangement. This system makes use of a 14-stage ripple carry binary counter to sense the light intensity through Light Dependent Resistor. The output drives a buzzer and a relay to perform the necessary action. This conception is very convenient to detect intruders in banks, shopping malls, jewelry stores and also in homes.
Electronic Eye Based Security System
The system is dependent on an electronic eye: known as LDR sensor.When light falls on the sensor, its resistance slightly reduces and leads to generate an alarm for alerting the user. This arrangement best suits as a friendly security system for lockers to protect valuable ornamentsusually found in shopping malls, jeweler shops, and banks, etc.
2. Pre-Programmed Digital Scrolling Message Display System
This project is designed for displaying messages in scrolling format on an alphanumeric Light Emitting Diode displays. This type of scrolling display system is seen in most common places like public areas, transport vehicles, buses, railway stations, nationalized banks, hotels, nightclubs, etc.
In this system, a Direct Current voltage of 5 Volts drawn from a power supply is fed into an 8051 microcontroller. This circuit makes use of 16-segment alphanumeric displays for displaying 16 characters at a time.
Pre-Programmed Digital Scrolling Message Display System
The microcontroller programming is done in such a way that it displays 16 characters in a beautiful manner. This scrolling display system displays 16 different messages to illustrate different occasions, which can be selected by the user with the help of slide switches. The usage of alphanumeric displays for the above purpose reduces the work load, and it is very cost effective.
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