The Rhythm JoggerKevin Nichols

Kai HsuPeter Liang

Rhythm Jogger

Just four easy payments of $9.99!!!

Proposed Goal

Our original plan was to make a jogging device that can do the following:

Play music and change tempo of the music depending on the user’s jogging pace.

Display useful information on LCD display.Allow user to download songs from PC and select

songs to play on the device.Heart monitor extension.

Original Design

Major Issues Resolved

Using two 89C55 chips to solve timer interrupt issues.

Midi file parser and timing algorithm for sending midi bytes.

Unknowns Known Now

2g and 10g accelerometers don’t matter that much in our data extraction routines.

Getting data input from keypad and display data on LCD display.

Operating system is not needed.

Design ChangesTwo 89C55 chips. One sends midi bytes to

the Atmel Dream chip without getting interrupted. The other one interfaces with the accelerometer, keypad, and LCD display.

Instead of matching the foot steps with drum beats, it will only match the jogging speed to the music playing speed (tempo).

Current Circuit Diagram

What Now

Implement what will be displayed on the LCD display.

Decide what functions each button on keypad should do.

Implement song selection.

Demo

Similar to the Affiliates Demo.Circuit is too large to jog with.May use a longer wire and attach the

accelerometer on hip.Improvements with keypad and LCD

display.Song selection will be included also.