Microcontroller Based Solar Tracking System

Renewable energy solutions are becoming increasingly popular.  Photovoltaic (solar) systems are but one example.  Maximizing power output from a solar system is desirableto increase efficiency.  In order to maximize power output from the solar panels, one needs to keep the panels aligned with the sun.  As such, a means of tracking the sun is required.  This is a far more cost effective solution than purchasing additional solar panels.  It has been estimated that the yield from solar panels can be increased by 30 to 60 percent by utilizing a tracking system instead of a stationary array .  This project develops an automatic tracking system which will keep the solar panels aligned with the sun in order to maximize efficiency. 

 

Download Link:

http://www.mediafire.com/?pv95d6iz12v5d24

Project on Pulse Oximeter

For patients at risk of respiratory failure, it is important to monitor the blood oxygen saturation of such individuals to ensure proper perfusion of blood in their system. Preferably this information should be received on a continuous basis. Both of these objectives can be reached via the non−invasive method of pulse oximetry. This is currently used in hospital/clinical settings, however uses wires which in effect bound an individual to an area. The purpose is to create a clinical diagnostic system which takes a few physiologically relevant signals and transmits them wirelessly to a base station.  This project specifically deals with the design of a wireless pulse oximeter for this system. By using the principle of differential light absorption and the assumption that the transmission of light through the arterial bed is influenced only by the relative concentrations of oxygenated and reduced hemoglobin and their  absorption coefficients at the two wavelengths, light intensity will decrease logarithmically according to Beer−Lambert’s law.The theory behind our device, hardware design and the experimental results of the system are presented.

For Full project Download:
Pulse Oximeter project.pdf

Project on Wireless Drawing Device

For our final project, we want to build a wireless drawing device. The user uses a keypad or a mouse to draw on the TV through a wireless communication medium (RF - 433.92 MHz). The user should be able to move
the drawing pointer to anywhere within the four border lines. One should also be able to draw or erase images on the TV screen. In designing this project, we have two goals - a primary, which is realizable, and a secondary, which is feasible. Our realizable goal is to build a wireless keypad interface with the television. In this interface, we want the keypad to be able to draw and erase on the TV. When we accomplish our primary goal, we shall attempt to achieve our secondary goal: to build a wireless mouse having the same functionality as the keypad. Due to time constraints, we ended up only being able to complete the primary goal. We chose this project because we were inspired by wireless communication technology.

Download Project from here:
http://www.mediafire.com/?svsgvjw7jazvlnf




THIS IS MY 100th Post. Thank you all who encourage me to go on posting.

Project on Security Entrance System

Our security system is a stand alone device that allows access to registered users identified by their magnetic cards.(For this project, "access" is represented by a lit LED, showing how the system could be used to control an external locking mechanism.)The system includes features such as:

• Multiple accounts, including Administrator accounts (which can create, modify, or delete the other accounts). The account information is stored in non-volatile EEPROM memory, so that it is maintained even if the system is reset.
• A "lock down" of the system when someone tries to gain access by repeatedly swiping incorrect cards.
• A 20x4 LCD display to give the user feedback on the current state (such as "Access allowed." or "try swiping the card the other way.") and to prompt administrators for commands. All messages printed to the LCD are simultaneously transmitted to an RS232 port, so that all activity can be logged by a PC. 

Download Links:
http://www.mediafire.com/?ngtweqtgztjypy2