Senior Design 2003-04

Spring 2004

Multi-Instrument Digital Tuner

By Jeremy Eisnschenk, Glen Hamann, and Todd Johnson.

The low cost digital instrument tuner is capable of use in tuning a wide variety of electronic and acoustic instruments. The device operator will be capable of selecting from several standard center frequencies and musical keys to accommodate various instruments and tuning options commonly used. A tone generator will also be included in the device to accommodate tuning by ear. The final device design will be capable of battery powered operation or line powered operation via an AC/DC adapter and will be small and light weight so as to be convenient to hold in one hand. The envisioned product will prove useful in tuning a wide range of electronic and acoustical instruments though we are primarily concerned with stringed instruments that generate sustained tones, which may be mentioned in real time such as a piano, guitar, or harp.

GPS Flight Data Logger

By Enanga Fale, Redempta Nju, and Chisore Nyirenda

The goal of this project is to build a device that is capable of gathering and interpreting data during flight. This device will function as a guiding and data collection unit to provide essential information regarding the flight conditions and terrain for the pilot. The GPS and Data Logger systems are essential tools that are commonly used in both the aviation and automotive industry. Our team decided to incorporate the two devices in which the GPS module would gather data, while transmitting and storing it to the data logger. The information stored in the data logger can later be interpreted, once it is downloaded to PC unit.

Differential Global Positioning System

By Nayanakantha P. Kittianpahuwa

The purpose of a DGPS is to increase the precision of the current Global Positioning System (GPS). This type of DPGS is expected to provide a precision of 2m or less, which can vary with the time of the day. The way to implement the DGPS is to place the GPS reference receiver at a location, compute the coordinate differences (in latitude and longitudes) between the GPS-derived position and surveyed position, and transmit these differences to the user. The user receiver employs these coordinate differences to correct his own GPS position solutions. This technique assumes that all GPS receivers make measurements from the same set of satellites to ensure that common errors are experienced. In the task of establishing the surveyed position, the average value of longitudes and latitudes is taken, which are measured for about two hours.

Multiplayer Electronic Texas Hold’em

By Tyson Miller, Brooke Mrdjenovich, and Leif Nereson

We have chosen to design a project that will catch the eyes of poker players all around. Our electronic project will eliminate problems that are often encountered when playing a game of cards. In particular, our design will be made for the game, “Texas Hold’em”. The cards for the game will no longer need to be handed out and the betting chips will no longer be used. This design will have two modes of operation in which the players will be able to choose from. One mode is that the players can play a new game where they will then choose how many people will be playing and how much money the players will have in their accounts. The other mode is to play a game that has been previously saved. In order to eliminate the cards and the betting chips, each player will have their own handheld game board and each of these game boards will interact with the main board, which will be called “the brain”. The interaction that is made between the boards and “the brain” will all be done through wireless communication. The “brain” will contain transceiver, microcontroller, and power supply. The game boards will contain transceiver, microcontroller, LCD screen, Keypad, and power supply.

Active Light Organ

By Keith Kieffer and Jennifer Struffert

We use an audio signal as the controlling input to a microcontroller setup. We would like for our system to be self-contained, requiring minimal computer interface. Our intent is to control lights, but not limit ourselves to lighting effects. The output of the control is based on relative change in the signal such as voltage or frequencies. This device would anticipate as well as go along with a given signal as the signal is played. This is a real-time device in which an audio signal is decoded based on audio frequencies by a microcontroller. The microcontroller outputs are then used to control the lights.

Temperature Controlled Ventilation System

By Matthew Contons, Mickie Joung, and David Mbaire

We intend to design ventilation system, which is temperature controlled. In simple term, when one of the rooms is colder or warmer relative to the temperature entered by the user, hot or cold air will be pumped into the room. At the same time, the return ducts will be circulating the air from room to room until a certain specified temperature has been attained in each room. The main objective is to ensure that the temperature is uniform in all the rooms in the house. The central controller will poll each room for the present temperature. The central controller will then interpret the temperatures and determine which room’s vents need to be opened and which rooms vents need to be closed. To poll each room, the central controller will communicate with the room’s microcontroller via wireless communication. The central controller will be in an infinite loop, continuously polling the rooms and using those temperatures to determine which vents need to be opened or closed.

Ultrasonic Collision Avoidance and Parking System

By Nathan Eisenbarth, Brent Ness, Shawn Pundsack.

We design collision avoidance and parking system that uses ultrasonic technology. This system will provide additional safety measures while driving by alerting the driver of possible collisions. Also, the system will provide information that will be helpful while parking. For the system to achieve these tasks, the driver will be required to choose between the two modes of operation. In both modes of operation, the system will acquire the distance between the vehicle and other objects by using ultrasonic transducer. The difference between the modes is the outputs to the user and the criteria of activating the alarm. In driving mode, the driver is alerted based on drastic changes in distance between the vehicle and other objects by using an audible alarm and flashing LEDs. The actual distance of objects in the front and rear of the vehicle will be displayed on a LCD screen. In parking mode, the driver is alerted based on the actual distance of objects surrounding the vehicle. The audible alarm and flashing LEDs will beep and flash more rapidly the closer the vehicle is to an object. The LCD will display the distance between the vehicle and objects on all sides. This system will be stand alone and compatible in most vehicles. The cars’s cigarette lighter will be used as the source of power for the UCAPS module. The sensors will be wired using 2 conductor shielded cable to reduce the noise in the line. These sensors cable will then be incorporated into a single connector that will then connect to the microcontroller board.

Automated Wireless Signal Mapper

By Dipesh J Karki and Bikash Koju.

The device would measure and map the signal power of a certain area automatically such that a network administrator or any personnel could determine the intensity of wireless signal at a specific location. The design of this system involves the extensive use of both hardware and software. Basically, the hardware part comprises of three modules namely: Wireless Signal Detection and Measurement Module, Location Surveying Module, and Data Storage Module. All the raw data stored will be analyzed and manipulated using a map generating software which requires a map of the building or location in order to generate a signal- strength map.

Wireless MP3 System with Two-Way Communication

By Joseph Dalton, Brian Lyson, and Kyle Pollock.

The WMSTC provides a central data storage facility, and also provides consoles that can be placed anywhere in the house, without the restrictions of wired data lines. The main unit provides storage for all the MP3 files, and also provides a wireless interface for communicating with the other consoles. The secondary consoles provide a user interface (UI) through a LCD-Keypad combination. It also provides a speaker output (Left and Right channels) for that console. The secondary consoles allow the end user to browse the audio files stored on the main unit, and select which one to play. The audio file is then played from the speaker outputs at the secondary console.

The Ultimate Portable MP3 Player

By Reed Hentges, Nick Orndorff, and Jason Scott.

This MP3 player will be able to broadcast a low power, FM signal in the 88-MHz to 108-MHz range. The user can then listen to the MP3 files on any nearby FM radio. It will also have a headphone jack so when no other audio system is present, the user will still be able to listen to the songs. Finally, the MP3 player will have a stereo analog output so the player could easily be connected to most home audio systems through the standard left and right analog audio inputs. Now no one will ever be left without the ability to listen to the hundreds of their favorite songs easily downloaded onto the Ultimate MP3 player.

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