We implemented an optical microphone which converts distant vibrations, including sound, to an audio signal. Measuring the reflection of a laser beam from windows or glass, it possible to hear sounds near the target. The system also includes frequency spectrum analysis with a real-time display and user-configurable ranges, and it also has an output for […]
Optical microphone and spectrum analyzer Using Atmega1284 Read More »
Our project is inspired by the commercial product, PicoDopp, which uses a similar scheme for foxhunting. Foxhunting is a contest where participants try to locate a transmitter, called the fox, simply by monitoring the signals it transmits. Typically this is done using highly directional antennas — antennas that only receive signals from one direction. However,
Radio Station Tracker Using Atmega644 Read More »
Introduction “We developed a wireless receiver capable of receiving and playing audio transmitted over an 802.11 Wi-Fi network” project soundbyte For our ECE 4760 final project we developed a wireless receiver capable of receiving and playing audio transmitted over an 802.11 Wi-Fi network. Our system was constructed using an Atmel ATxmega256A3U microcontroller and a RN-XV
MAD-DOG Kick-Awesome Wi-Fi Audio Streamer Using Atmega644 Read More »
Introduction The goal of our project was to design a low cost and user-friendly FM radio receiver. Our project uses a FM receiver integrated circuit to perform the pre-processing units that are needed before the desired audio signals can be heard. The radio frequency is too fast for processing with our available hardware and the
FM Radio Receiver Using Atmega644 Read More »
Introduction We set out to make an easy to interact with, highly custimizable POV display. In deciding on a project we looked for a challenge that would have a good mix of hardware and software problems. We ended up primarily concentrating on looking at unusual display technologies and decided that a persistence of vision(POV) display
Wireless Persistence of Vision Device with Realtime Control Using Atmega644 Read More »
Introduction This project is a proof-of-concept device that transmits an audio signal using a laser beam, while removing the need for the user to align the beam themselves. For our project, we created a mono-axial transmitter/receiver setup that converts an analog audio signal, via a standard 3.5mm jack, and transmits it via a laser to
Laser Audio Transmitter Using Atmega32 Read More »
Our wireless music player allows the user to listen to uncompressed digital audio streamed over a wireless link. The music player reads uncompressed audio data from an SD card in an immobile “base station.” A pair of Xbee transceiver modules are used to stream data and control signals between the base station and a portable
Wireless Music Player Using Atmega32 Read More »
This project is a radio frequency receiver that will help the user the trace the direction and distance of transmitter beacon(s) operating at 433MHz frequency. In this ECE 476 final project, we have built a radio frequency receiver unit with an LCD screen that will display information about the RF signals that it is picking
Radio Frequency Beacon Finder Using Atmel Mega32 Read More »
Introduction: Error correcting codes are used throughout digital communication systems today. Cell-phones, CD players, satellites, digital pagers and many other communication devices all use varying amounts of error control to achieve a certain degree of accuracy in transmitting information. The idea behind error control codes is very simple; one can insert some amount of controlled
Implementation of a (31, 16) BCH code on a Microcontroller Using Atmega32 Read More »
We have designed a programmable infrared receiver which can utilize any pulse coded IR signal to play Connect Four from a remote distance. The programmable infrared receiver device we have created can decode any pulse-width modulated signal of an IR remote control, store it in non-volatile memory, and then recognize that signal again the next
Connect Four with Programmable Infrared Receiver Atmel Mega32 Read More »
